AOM Driver (RF Driver)

AOM Driver (RF Driver)

Keywords: AOM Driver, RF Driver, Q driver, 100MHz, 120MHz, 200MHz, 250M

An RF driver generates a fixed or variable frequency signal supplied to the acousto-optic devices transducer. This in turn uses the piezoelectric effect to very precisely convert the RF signal to an acoustic wave.

An RF driver generates a fixed or variable frequency signal supplied to the acousto-optic device’s transducer. This in turn uses the piezoelectric effect to very precisely convert the RF signal to an acoustic wave that propagates within the acousto-optic device’s crystal. The frequency and intensity of the applied signal will determine how much an optical beam is modulated, deflected, or tuned.

An acousto-optic device and its RF driver should be selected as a unit to optimize speed and stability for each application. Additional driver features include first pulse suppression, synchronization, pulse shaping, and multichannel operation. We offer a wide variety of stable high frequency drivers with analog and digital modulation capability. Voltage controlled oscillators (VCOs) vary the oscillation frequency via the input voltage, and are a costeffective solution for applications with less stringent frequency stability and linearity requirements.

Direct digital synthesizer (DDS) drivers offer higher stability, with fast switching time and high resolution. They can create random waveforms from a single, fixed-frequency reference clock, and thus are ideal for pulse shaping and special functions. They also allow frequency to be varied on the order of a few hundred nanoseconds, and are inherently very linear. DDS drivers are software driven, and can be run from a user-friendly interface (a GUI), or controlled directly via computer driver commands. Our high-performance multi-frequency DDS drivers generate up to 8 channels of RF frequencies simultaneously.

As our AO product lines expand, we are creating more flexible, adaptive RF drivers with dual analog/digital operation and configurable firmware to accommodate functionality like triggering and temperature control without the need for new hardware. Our OEM designs, in contrast, are optimized to each customer’s application, maximizing performance in the required form factor.

CHOOSING AN RF DRIVER
The needs of the AO device will dictate the choice of RF driver. The primary factors to consider are shown below, though speed, duty cycle, and special functions are also important.

  • RF power: ranges from 150 W
  • Modulation: digital or analog
  • Frequency of operation: may be fixed, variable (linearly swept), or programmable
  • Stability: influencing choice of VCO vs DDS when frequency is not fixed
  • Number of channels: number of output ports or number of output tones from a single port
  • Special functions: pulse-killing, synchronization, etc.

MODULATION: DIGITAL VS ANALOG
The modulation mode determines how the applied RF power is varied, and thus the intensity of diffracted light. In digital modulation, the RF power is applied in an on/off state via an applied TTL signal, thus controlling whether the beam is diffracted. In analog modulation, the RF power is controlled through application of a voltage within a specified range, yielding control over the diffraction efficiency and allowing shaping of that waveform in time.

FIXED VS VARIABLE FREQUENCY DRIVERS
Fixed frequency drivers provide a single output frequency which is matched to the AO device. Offered from 24-440 MHz, fixed frequency drivers may be controlled via analog or TTL input, some with manually adjustable output RF power. These are used most often for modulation applications.

Variable and programmable frequency RF drivers allow active control of output frequency. Voltage controlled oscillators (VCOs) provide a linearly swept (variable) RF drive frequency, and are flexible enough to be used for any AO device. Direct digital synthesizer (DDS) drivers offer programmable frequency. They can create random waveforms from a single, fixed-frequency reference clock, and thus are ideal for pulse shaping and special functions. DDS drivers are software driven, and can be run from a user-friendly interface (a GUI), or controlled directly via computer driver commands. Our high-performance multi-frequency DDS drivers generate up to 8 channels of RF frequencies simultaneously.

DUAL DRIVERS
Dual drivers allow simple or complex digital waveforms to be synthesized, converted to analog signals, and amplified to drive the AO device. This gives great flexibility; for example, it allows the driver to provide multiple programmable frequencies or to swap freely between multiple, complex, bespoke waveforms.

FREQUENCY AGILITY AND CONTROL
We offer Direct Digital Synthesizer (DDS) drivers that offer high stability and linearity, with fast switching time and high resolution. They are capable of creating arbitrary waveforms from a single, fixed-frequency reference clock, and thus are ideal for pulse shaping and special functions. DDS drivers can be run from a GUI or via driver commands in two modes: 1) random access, with digital words mapping to specific frequencies, and 2) chirped mode for continuous scanning in frequency increments. DDS drivers are also referred to as DFS (digital frequency synthesizer) drivers.

Our technical support team is available to advise on selection and optimization of RF drivers for specific applications, as well as customization of products for OEM integration.

APPLICATIONS OF RF DRIVERS
Driving and control of acousto-optic devices, including modulators, deflectors, cavity dumpers, fiber-coupled modulators, frequency shifters, mode lockers, multi-channel modulators, pulse pickers, Q-switches, tunable filters.

STG Series RF Drivers (AOM Drivers)

1. Our standard models are below:

Product Compatible AO Device Operating Frequency Max RF Power Key Feature
97-05301-01 (1080HE-AD-1.0) AOM, Frequency Shifter, Deflector 20-80MHz 1.4W Compact, high efficiency RF driver, combined modulation
64020-200-2ADMDFS-A Deflector, Special Modulator, Tunable Filter 20 - 200 MHz 2.0 W Programmable frequency; single channel DDS
64020-250-1ADMDFS-A Deflector, Special Modulator, Tunable Filter 20 - 250 MHz 1.0 W Programmable frequency; single channel DDS
97-02925-32 Deflector, Tunable Filter 20 - 160 MHz 0.4 W Programmable frequency; single channel DDS
6000 Series Deflector, Tunable Filter 50-450 MHz 15-20 W Dual channel outputs, 2-axis scanning
97-03926-12 Deflector, Tunable Filter 20 - 160 MHz 3.2 W Programmable frequency; 8 channel DDS
97-02910-xx (2910 series) Fiber-Q 80-200 MHz 2.5-3.0 W Fixed single frequency; low power draw
3307 series Fiber-Q, Frequency Shifter 80 - 350 MHz 1-4 W Fixed single frequency
3910 series Fiber-Q, Frequency Shifter, Modulator 80 - 350 MHz 0.5-8.0 W Fixed single frequency
A35xxx-S-1/50-p4k7u Fiber-Q, Frequency Shifter, Modulator 40-300 MHz 0.5-5.0 W Fixed single frequency; analog & digital modulation
MHPXXX-YYADM-A1

Formerly N31xxx-yyADM

Fiber-Q, Modulator 24 - 260 MHz 2-20 W Fixed single frequency
MCX0XX-Y.YZC-MINx Frequency Shifter, Modulator 40-80 MHz 0.5-2.5 W Fixed single frequency; ultra-compact size
HP041-125ADG-A10 Modulator 40.68 MHZ 125 W Fixed single frequency; Ge AO devices
HP040-060-150ADG-A10-2X Modulator 40/60 MHz 2 x75 W Fixed dual frequencies; Dual channel Ge AO devices
Compact low power RF AOM and AO driver, QSQCxxx-yyDC-zz-aaV Modulator, Q Switch 24-110 MHz 2-24 W Fixed single frequency; compact, low power; fixed/variable pulse width
MQH0XX-YYDM-ZZZ Modulator, Q Switch 24-80 MHz 25-100 W Fixed single frequency; fixed/variable pulse width
MQH0XX-YYDM-ZZZ-2S Q Switch 24-80 MHz 25-50 W per channel Fixed single frequency; 2 channel; fixed/variable pulse width
SD020-200-5UC-4x1 Tunable Filter 20 - 200 MHz 5.0 W Programmable frequency; single or multi-channel DDS

2. Old RF Driver models below for your reference:

Old RF Driver models below: N31xxx-yyAM N31xxx-yyDM MLPxxx-yAC MLPxxx-yAS MLPxxx-yDC MLPxxx-yDS (N21xxx-yAM N21xxx-yDM) 1xxxAF-AINA-y HCR 1xxxAF-DINA-y HCR (A35xxx-S-1/50-p4k7u) A36xxx
RF power 2-20W 0.4, 1 or 2W 0~5W (Analogue) 2W
RF frequency, MHz 24-260 27-300 80, 100, 110, 150, 200, 250, 300, 350
Max. modulation frequency <1/3 carrier frequency and <50MHz
Input modulation Analogue or digital Analogue and digital

Description of N series drivers:

  • xxx = a fixed frequency of between 27 and 300 MHz crystal controlled.
  • y = 0.4, 1, or 2 Watts output (N21 series), 2-20W adjustable output (N31 series)
  • D = Digital Modulation or A = Analogue Modulation
  • M = OEM Module

Description of A3 series drivers:

  • ♦ low profile housing
  • ♦ various standard frequencies, other frequencies from 40 to 350 MHz available
  • ♦ analogue and digital modulation
  • ♦ EMC-safe design, power stage and control circuits separately grounded, entirely shielded
  • ♦ supply voltage 24 V DC

3. Fiber-Q RF Driver

Each Fiber-Q acousto-optic modulator requires an RF driver to control the embedded acousto-optic crystal, as modulation of the beam depends upon the frequency and intensity of the applied RF signal.

The RF signal which generates the acousto-optic wave in the acousto-optic crystal can do so very precisely at a fixed or variable frequency, and is created using a transducer mated to the acousto-optic crystal and driven by the piezoelectric effect.

Analog, digital, and combined RF drivers are available for use with the Fiber-Q series. All are designed for dependable stability and high frequency operation, with compatible options for the full line of visible and NIR Fiber-Q products. The speed and stability of a modulator is limited by the stability and speed of the RF driver, and thus the two should be selected as a paired unit to optimize performance, features, and application-specific options.

The primary factors to consider when selecting an RF driver include the operating frequency, the required rise/fall time of the application, and whether analog or digital modulation is needed. RF power, duty cycle, stability, and variable vs fixed frequency are also relevant.

Drivers for the Fiber-Q series of modulators are designed for constant RF power output, fast modulation, and with conductive cooling via the baseplate. When tuned together with the modulator, they offer stable, dependable modulation to enable all-fiber laser systems.

Model Operating Frequency RF Power Key Features
97-09210-18 80 MHz 3.0 W Analog
97-09210-19 80 MHz 3.0 W Digital
A35080 80 MHz 3.0 W Analog/digital
A35110 110 MHz 3.0 W Analog/digital
97-09210-14 150 MHz 2.5 W Analog
97-09210-15 150 MHz 2.5 W Digital
A35150 150 MHz 2.5 W Analog/digital
97-02910-04 200 MHz 2.5 W Analog
97-02910-01 200 MHz 2.5 W Digital
A35200 200 MHz 2.5 W Analog/digital

AOM Driver (RF Driver) 64020-250-1ADMDFS-A (20-250MHz, 1W)

A digital frequency synthesizer OEM module with analog and digital modulation input and a 1 Watt RF output. The unit can be used to generate a frequency chirp. When specified as R64020-250-1ADMDFS-A, the unit delivered will be manufactured to be compliant with EU Directive 2002/95/EC for reduction of hazardous substance.

PARAMETER SPECIFICATION
Bandwidth: 20 – 250 MHz typical
Clock Frequency: 1000 MHz
Step Size: < 1 Hz with 30 Bits input
Frequency Settling Time: 310 ns Maximum
Power Out: 1 watts typical
Harmonic Distortion: 2nd:-20 dBc Maximum; 3rd: -15 dBc Maximum
Analog Modulation: 0 to +1 volt Analog into 50 ohm, +1volt = Full RF power output.
Digital Modulation: 1) TTL levels; 2) TTL Active High = Full RF output power; 3) TTL Active Low = Minimum RF output power; 4) No Signal = Full RF output power (pulled high internally)
Rise and Fall Time: 20 ns
Extinction Ratio: Digital: 30 dB Minimum
Analog: 40 dB Minimum
Reference Out: A reference signal from the un-modulated output of the synthesizer. +0 dBm nominal
Applied Power: + 28 volts DC @ 1 amp Maximum

+ 3.3 volts DC @ 1 amp Maximum

MAXIMUM RATINGS:
Ambient Temperature: 400 C
RF Output: No DC Feedback
INPUT / OUTPUT CONNECTIONS:
+28v, +3.3V, and Gnd Filtered Feedthru
Mod In SMC Male
Reference Out SMC Male
RF Output SMA Female
"FREQUENCY SELECT" Control TTL 30 bit binary word, Digital Modulation Input, Reset, and a Latch control input through the 37 pin D sub connector.
Dimension 140x109x40.6mm
Outline Drawing 53D3887

CONTROL WORD CALCULATIONS

The output frequency and step size is a function of the clock rate and the FREQUENCY SELECT (FS) data. The output frequency can be calculated from the formula:

FS[29:0] = Fout (231) / 1000 MHz

Where Fout is output frequency in MHz

The LATCH function (pin 16) is a TTL compatible input which is used to load new frequency information into the driver. Frequency data is loaded into the driver when the signal on the LATCH pin goes from HIGH to LOW (falling edge).

The DELTA FREQUENCY LATCH function (pin 36) is a TTL compatible input which is used to load new data frequency information into the driver. For Delta frequency word, the same calculation is used as the output frequency with negative values being entered in twos complement data is loaded on the falling edge.

Master RESET is a TTL active HIGH and resets the accumulator to zero, ie, no frequency output, when a TTL HIGH is applied to pin 17. This is pulled LOW via. a 1 K resistor.

AOM Driver (RF Driver) 64020-200-2ADMDFS-A )20-200MHz, 2W)

A digital frequency synthesizer OEM module with analog and digital modulation input and a 2 Watt RF output. When specified as R64020-200-2ADMDFS-A, the unit delivered will be manufactured to be compliant with EU Directive 2002/95/EC for reduction of hazardous substance.

PARAMETER SPECIFICATION
Bandwidth: 20 – 200 MHz typical
Clock Frequency: 1000 MHz
Step Size: < 1 Hz with 30 Bits input
Frequency Settling Time: 250 ns Maximum
Power Out: 2 watts typical
Harmonic Distortion: 2nd:-20 dBc Maximum; 3rd: -15 dBc Maximum
Analog Modulation: 0 to +1 volt Analog into 50 ohm, +1volt = Full RF power output.
Digital Modulation: 1) TTL levels; 2) TTL Active High = Full RF output power; 3) TTL Active Low = Minimum RF output power; 4) No Signal = Full RF output power (pulled high internally)
Rise and Fall Time: 20 ns
Extinction Ratio: Digital: 30 dB Minimum
Analog: 40 dB Minimum
Reference Out: A reference signal from the un-modulated output of the synthesizer. +0 dBm nominal
Applied Power: + 28 volts DC @ 1 amp Maximum
+ 3.3 volts DC @ 1 amp Maximum
MAXIMUM RATINGS:
Ambient Temperature: 400 C
RF Output: No DC Feedback
Supply Voltage: 30 volts DC; 3.5 volts DC
INPUT / OUTPUT CONNECTIONS:
+28v, +3.3V, and Gnd Filtered Feedthru
Mod In SMC Male
Reference Out SMC Male
RF Output SMA Female
"FREQUENCY SELECT" Control TTL 30 bit binary word, Digital Modulation Input, Reset, and a Latch control input through the 37 pin D sub connector.
Dimension 140x109x40.6mm
Outline Drawing 53D3887

CONTROL WORD CALCULATIONS

*Note: (1) This system only uses 30 bits to set the frequency output from the driver. The accumulator inside the chip is 31 bit, so use 231 in your calculations for precision. (2) The LATCH function (pin 16) is a TTL compatible input which is used to load new frequency information into the driver. Frequency data is loaded into the driver when the signal on the LATCH pin goes from HIGH to LOW (falling edge). (3) Master RESET is a TTL active HIGH and resets the accumulator to zero, ie, no frequency output, when a TTL HIGH is applied to pin 17. This is pulled LOW via. a 1 KΩ resistor.

AOM Driver 97-02925-32 (20-160MHz, 0.4W)

General Features

  • On-board output power measurement.
  • Linear amplitude modulation, blanking, frequency shift keying and RS232 in common connector.
  • Robust command set.
  • Built in Network Protocols (i.e. Point to Point Protocol PPP, Link Control Protocol LCP,
  • Password Authentication Protocol PAP, Internet Control Message Protocol, etc)
  • Control Voltage Levels: RS232.

Specifications

Part code 160T1-1SNR-12-0.4J
Frequency specifications
Frequency range 20-160MHz
Frequency resolution (1) 0.1Hz
Frequency stability +/-2 ppm/deg C
Frequency preload time (2) <10 us
Frequency toggle time (3) <20ns
Amplitude Specifications
RF output power (4) 0.4W
RF output gain adjust (5) 30dB
Modulation bandwidth (6) >2MHz
Dynamic range (7) >40dB
Intermodulation (8) >40dB
Spurious >30dBc
Signal to noise ratio (9) >90dB
Interfaces
RF output impedance 50 Ohms
Amplitude modulation input level 0-10V
FSK modulation input level 3.3V
Blanking input level 3.3V
Digital controls ASCII
Sensor input +/-3.3V
Power input,from DC supply 12V@1A
Dimension 165x132x25mm

Remarks:

  1. Actually 0.0931 Hz, closest approximation to set frequency will be chosen.
  2. Typically 1-10 μs, each frequency requires 32 bits, plus a starting RAM address.
  3. 3 independently pre loaded preset frequencies
  4. At maximum output gain adjustment.
  5. Linear in dB at constant signal to noise ratio.
  6. Measured at -3 dB point, DC coupled.
  7. 20-160 MHz, from 1 dB compression point to minimum achievable output.
  8. 2 tone test, 100 MHz + 105 MHz, each of 125 mW output
  9. 1 MHz measurement bandwidth , 125 mW reference tone.

AOM Driver 97-03926-12 (20-160MHz, 3.2W, 8 channels)

General Features

  • 8 channels, combined as composite output.
  • On-board composite output power measurement.
  • Independent linear amplitude modulation on each channel.
  • Common blanking signal for all channels.
  • Independent frequency shift modulation on each channel.
  • Robust command set.
  • Built in Network Protocols (i.e. Point to Point Protocol PPP, Link Control Protocol LCP, Password Authentication Protocol PAP, Internet Control Message Protocol, etc.)
  • Control Voltage Levels: RS232.

Specifications

Part code 160T2-8SAR-24-3.2B
Frequency specifications
Frequency range 20-160MHz
Frequency resolution (1) 0.1Hz
Frequency stability +/-2 ppm/deg C
Frequency preload time (2) <8 us
Frequency toggle time (3) <80ns
Amplitude Specifications
RF output power 3.2W
RF output power, per channel 0.4W
Modulation bandwidth (4) >2MHz
Dynamic range (5) >35dB
Intermodulation (6) >41dB
Spurious >45dBc
Signal to noise ratio (7) >75dB
Interfaces
RF output impedance 50 Ohms
Amplitude modulation input level 0-10V
FSK modulation input level 3.3V
Blanking input level 3.3V
Digital controls ASCII
Sensor input +/-3.3V
Power input, from DC supply 24V@2A
Dimension 165x132x25mm

Remarks:

  1. Actually 0.0931 Hz, closest approximation to set frequency will be chosen.
  2. Typically 1-8 μs, each frequency requires 32 bits, plus a starting RAM address.
  3. Direct switch mode to one of three preset frequency.
  4. Measured at -3 dB point, DC coupled.
  5. 20-160 MHz.
  6. 2 tone test, 100 MHz + 105 MHz, each of 125 mW output
  7. 1 MHz measurement bandwidth , 125 mW reference tone.
  8. Reference Outline Drawing 97-03926-12-15.

6000 SERIES DRIVER (20-450MHz, 2 channels, 15W)

15 W Output – Configurable Operation

Our 15 W output RF driver provides up to two independent RF channels with a fast parallel interface as well as USB controllability.

Ideally suited for controlling a two element phased array acousto-optic (AO) beam deflector (MUX mode), the driver can also be used to drive two single element AO beam deflectors for two dimensional scanning (Dual Channel mode). The 6000 driver has additional flexibility for controlling AO tunable filters (multi-tone mode). With its arbitrary waveform playback capability, multiple wavelengths can be simultaneously diffracted by tunable filters and multiple beam spots can be generated by beam deflectors.

Two independent 15 W RF amplifiers are housed in a compact form factor with a fast parallel frequency programming interface. Remote control over an included USB interface is also available with an intuitive command set and GUI. Dual amplitude and relative phase control inputs are included on the rear panel with the parallel interface connectors. Capabilities include dynamic frequency chirp control. An all digital option allows high speed programming of frequency, amplitude and phase. The default, power-on is stand-alone mode, not requiring PC control; connecting the USB connection enables a Host PC mode. A single channel version is also available.

The 6000 driver is available in three frequency bands, and each unit includes a monitor output that covers the entire 20-450 MHz frequency band. Driver functionality can be re-configured over the USB interface.

Key Features

  • Two 15 W independent RF outputs
  • Parallel interface for frequency programming
  • USB interface and compact command set
  • 20-450 MHz in three bands: (1) Low band 20-150 MHz; (2) Mid band 40- 245 MHz; (3) High band 140-450 MHz
  • Re-configurable functionality
  • Playback mode for custom waveforms
  • Amplitude and phase modulation
  • 10 spare definable control inputs

Key Benefits

  • Dual RF outputs
  • Compact form factor
  • Host PC control or fast interface
  • Functional re-configurability

Applications

  • OEM AODF/AOTF systems
  • Via drilling/micro-machining systems
  • Optical inspection systems
Parameter Min Max Units
Output frequency range:
low band model
mid band model
high band model

20
40
140

150
245
450
MHz
Rated RF output power (1)(9) 15 W
RF power flatness (2) across frequency band, nominal power +/-0.5 dB
2nd harmonic distortion at rated RF output power -25 dBc
Non-harmonic spurious free dynamic range -50 dBc
Standard output waveform (3) Sinusoid n/a
Independent RF outputs 2 n/a
Number of programmable tones per output (4) 5 n/a
Frequency resolution (5) 1 kHz
Frequency stability, 15°C to 50°C ambient temperature +/-0.5 ppm
Frequency settling time after latch signal assertion (6) 200 nS
Frequency update rate (parallel interface) 25 MHz
Amplitude control (analog input) range, each output channel (7) 40 dB
Amplitude blanking 80 dB
Relative phase control (analog input) range, relative (8) 0 +/-180 Deg.
Amplitude/phase control modulation bandwidth 25 MHz
DC voltage input range (9) 24 28 V
DC total system power 100 W
Playback mode waveform file size (per output, 1 GHz clock) 300 k Samples
Operating temperature range (ambient) 15 50 °C
Dimension 7.27x5.98x1.65 Inch

All specifications at Tambient = 22 °C

  1. Rated amplifier output level, requires adequate heatsinking. Contact us for details.
  2. Power flatness set internally at factory. User compensation array can be loaded over USB interface.
  3. Default output waveform is sinusoidal. User-defined waveforms loaded in playback mode.
  4. Standard firmware build is 1 frequency tone per output port.
  5. Frequency tuning word (FTW) is 20 bits.
  6. Total latency time from assertion of latch signal to appearance of new frequency at RF output (FTW pre-loaded at interface).
  7. Output power linear with input control voltage.
  8. Sets phase of output #2 relative to output #1, defined only for identical programmed frequencies on both outputs.
  9. Rated output power at 28 VDC.

Command Set (Host PC Mode via USB interface)

Command Action
Freq X, YYY Sets output frequency YYY (MHz) on channel X (1 or 2)
Amp X, YY Sets output power YY (00 – 99) on channel X (1 or 2)
Pha YYY Sets relative phase to YYY (0 to 360 degrees)
Latch X Latch command for channel X, latches the pre-loaded FTW
Soft on Allows USB control of output power levels
Soft off Reverts system to hardware mode, requires analog amplitude control

Interface Description

Interface Definition Connector Levels Input / Output Assignments
Parallel interface, Ch #1, #2 MDR mini-D 68 pin (x2) TTL Frequency word [19:0], spares (5), latch In (1), trigger in (1), blank (1), sync (1), status out (1)
Amplitude modulation inputs SMB (x2) 0–1V Ch #1, Ch #2
Phase modulation input SMB (x1) 0–1V Relative phase between channels
USB USB mini-B USB USB 2.0 Interface (mass storage)
Main RF output SMA (x2) RF Output Main RF output ports, per model
Aux RF output SMA (x2) Aux Output Auxiliary RF output, 20-450 MHz
Main DC power input 2mm power jack 24–28 VDC Main DC power input

AOM Driver 2910 Series (80-350MHz, 4W)

The 2910 Series RF driver provides up to 4 Watts output power. Various types cover a frequency range of 80 to 350MHz. The maximum RF output power is adjustable by an internal potentiometer. The driver is available in either analogue or digital modulation control. The analogue modulation voltage controls the output power from 0 to 100% of the adjusted maximum power. The digital modulation control signal can switch on and off the RF power.

The driver can be operated with modulation frequencies (analogue and digital) up to 25% of the carrier frequency and 50 MHz maximum at the higher carrier frequencies. Optimum EMC shielding and mechanical protection is achieved by an aluminium casing. The base plate serves for mounting and heat dissipation purposes.

Key Features:

  • Frequency range 80 to 350 MHz
  • RF output power up to 4 Watt
  • RF on/off ratio 60 dB (Digital Modulation)
  • RF on/off ratio 50 dB (Analogue Modulation)
  • Constant output power design
  • Models with a modulation frequency up to 50MHz available
  • Conductive cooling through base plate
  • Compact casing

Applications:

  • Fast modulation components for extra cavity applications, e. g. laser projection systems
  • Frequency shifting

Technical Specifications:

Supply voltage +24V DC
Supply current 600 mA (nominal) with Pout = 1.0 W 625 mA (nominal) with Pout = 1.5 W 775 mA (nominal) with Pout = 2.5 W 825 mA (nominal) with Pout = 3.0 W 900 mA (nominal) with Pout = 4.0 W 2700 mA (nominal) with Pout = 20 W*
Output impedance 50  (nominal)
Maximum RF power (adjustable) < 0.1 W … > Pout
Frequency accuracy ± 0.1%
Harmonic distortion** ≤ -20 dBc***
Analogue modulation impedance Voltage range @50 RF ON/OFF ratio 50  (nominal) 0 … +1 V ≥ 50 dB****
Digital modulation Impedance Level RF ON / OFF ratio 75  (nominal)***** Standard TTL ≥ 60 dB
RF output frequencies 80, 110, 150, 200, 260 & 350 MHz
RF rise/fall times (Rise=10% to 90%) (Fall=90% to 10%) 12 nsec @ 80 MHz 9 nsec @ 110 MHz 7 nsec @ 150 MHz 5 nsec @ 200 MHz 4 nsec @ 260 MHz 4 nsec @ 350 MHz
  • * A 20 W version available using external amplifier.
  • ** Into 50 load
  • *** Part numbers -16 and -17 are ≤ -15 dBc
  • **** Part numbers -12, -14 and -16 are 45 dB
  • ***** Part number -11 is 600  (nominal)

Connectors

  • RF output connector : SMA (female)
  • Modulation connector: SMC (male)
  • Power Supply connector:
  • Input: Solder terminal (filtered feed-thru)
  • Ground: Solder lug

Cooling, Dimensions, Weight

Cooling Conduction Base plate should be attached to suitable heat sink capable of dissipating
1.0 W - 1.5 W 15 W
2.5 W - 3.0 W 20 W
4.0 W 22 W
Dimensions inches [mm] L x W x H 4 x 1.12 x 3.15 [102 x 29 x 80]
Weight lbs [kg] 0.53 [0.24] (nominal)

Environmental Conditions

Warn-up Time 5 minutes (nominal)
Base Plate Temperature 0C to +60C. For optimum output power stability constant base plate temperature should be provided
Storage Temperature -25C to +85C (non condensing)

Absolute Maximum Ratings

Supply Voltage +28 VDC
Analogue Modulation -1.5 V to +1.5 V
Digital Modulation -0.5 V to +2.75 V
Operating Temperature +65C (base plate temperature)

Quality Standards

  • EU 2002/95/EC (RoHS): Compliant
  • Burn-in: 12 Hours min @ +25 C and Pout

Outline Drawing: Please click here for dimensions.

Variant List / Ordering Codes

Other Frequencies and customized versions available upon request.

AOM Driver (RF Driver) 3910 Series (45-500MHz, 8W)

Next Generation AO Modulator Driver

The 3910 series RF drivers offer a significant upgrade over our 2910 series while maintaining backwards compatibility.

The 2910 series RF driver has been a workhorse for powering AO modulator applications over the last decade. The line has received a complete makeover to further enhance the success of this signature driver. All of its functions have been improved and a few key features have been added while maintaining its affordable price.

The 3910 modulation input now allows the user to switch from three modulation schemes: Digital, Analog and Digital+Analog. This function will be standard on all models. The RF power has been doubled from 4Watts to 8Watts (at +28Vcc). The 3910 features more efficient power consumption than its predecessor. The Frequency range has been increased up to 500MHz, making it able to control any of the currently available AO modulator models. The rise time is <4ns at all power levels and frequencies >250MHz. Another new feature is the optional ability to synchronize the driver to an external clock reference. The 3910 RF driver offers more power, higher frequencies, faster rise times, more modulation choices, synchronization capabilities and the latest electronic components over the 2910 series driver while maintaining the same footprint and pricing.

Key Features

  • Up to 500MHz center frequency
  • Selectable modulation input
  • Adjustable RF power up to 8 Watts
  • Rise time as low as 4 ns
  • Optional external clock synchronization

Key Benefits

  • Proven reliability
  • Consistent performance
  • Lower power consumption
  • Test documentation
  • One year limited warranty

Applications

  • Micromachining
  • Materials processing
  • Laser displays
  • Printing
  • Heterodyne interferometry
  • Pulse picking
Parameter Performance
Center frequency 45 – 500 MHz fixed
RF output 0.25 – 8.0 Watts adjustable (at +28 V)
Input voltage +Vcc +24 to +28 V
2nd harmonic level < -20dBc
Output VSWR 1.5:1 max
Output waveform Sinusoidal
Rise / fall time 4 nsec max (frequencies ≥ 250 MHz)
Contrast ratio 50 dB min
Analog input voltage 0 – 1 V
Analog input impedance 50 Ohms
Digital input voltage Standard TTL levels
Digital input impedance 10 kOhms
Frequency stability +/-1.5 ppm over temp
Frequency accuracy +/-1%
Thermal management Conduction cooled heat sink
Operating temperature range 10°C to 60°C
Dimension 4x1.12x3.31in (101.6x28.4x84mm)

Model Code Generation:

3910

Based on the different configurations, we split the 3910 driver part number into 12 categories as follows:

3910 - <3.0W, <100MHz, No heat sink, Internal Clock
3911 - <3.0W, 100-199MHz, No heat sink, Internal Clock
3912 - <3.0W, >199MHz, No heat sink, Internal Clock
3940 - >=3.0W, <100MHz, Heat sink, Internal Clock
3941 - >=3.0W, 100-199MHz, Heat sink, Internal Clock
3942 - >=3.0W, >199MHz, Heat sink, Internal Clock
3950 - <3.0W, <100MHz, No heat sink, External Clock
3951 - <3.0W, 100-199MHz, No heat sink, External Clock
3952 - <3.0W, >199MHz, No heat sink, External Clock
3960 - >=3.0W, <100MHz, Heat sink, External Clock
3961 - >=3.0W, 100-199MHz, Heat sink, External Clock
3962 - >=3.0W, >199MHz, Heat sink, External Clock

A35xxx (40 to 350MHz, 5W)

The A35xxx RF driver series provides up to 5 Watt output power. Various types cover a frequency range from 40 to 350 MHz.

The maximum RF output power is adjustable by an internal potentiometer. The analogue modulation voltage controls the output power from 0 to 100% of the adjusted maximum power. Additionally to the analogue modulation voltage a digital modulation control signal can switch on and off the RF power. An operation scheme below (page 5) illustrates the interaction of the two modulation signals in detail. Both the analogue and digital modulation are characterized by extraordinary on/off ratios of at least 65dB. The driver can be operated with modulation frequencies (analogue and digital) up to 25% of the carrier frequency and 50 MHz maximum. Optimum EMC shielding and mechanical protection is achieved by an aluminium casing. The base plate serves for mounting as well as for heat dissipation.

Key Features:

  • Frequency range 40 to 350 MHz
  • RF output power 5 Watt
  • RF on/off ratio > 65 dB
  • Constant output power design
  • Models with a modulation frequency up to 50 MHz available
  • Conductive cooling through base plate
  • Compact casing, fully shielded (EMC)

Applications:

  • Fast modulation components for extra cavity applications, e. g. laser projection systems
  • Frequency shifting

Technical Data:

+24 VDC
Supply voltage
Supply current typ. 1.5 A @ 5 W RF output power
Output impedance nom. 50W
Maximum RF output power (adjustable) * > 5 W (+37 dBm)
Adjustment range <0.1W …… >5W
Frequency accuracy < ±25 ppm
Harmonics distortion* < -26 dBc
Analogue modulation**
Impedance 50W
Voltage range @ 50W 0 … +1 V
RF ON / OFF ratio > 65 dB
Digital modulation**
Impedance 4.7kOhm (pull-up)
Level High = ≥ 3V … 5V (=RF on)

Low = 0 … < 2V (=RF off)

RF ON / OFF ratio > 100 dB
RF output frequency*** [MHz] 40 … <80 80 … <140 140 … <200 200 … 350
Analogue modulation RF rise time / fall time (PRF: 10 … 90%) * < 25 ns < 15 ns < 10 ns < 8 ns
Digital modulation RF rise time / fall time (PRF: 10 … 90%) * < 25 ns < 15 ns < 10 ns < 8 ns
  • * into 50 _ load
  • ** other configurations on request
  • *** standard frequencies: 40, 80, 110, 150, 200 MHz

Connectors, Dimensions, Weight, Cooling

RF output connector SMA female
Control input connector D-Sub 7W2
Pins 1 and 2, inside linked GND (case)
Pins 3 and 5, inside linked +Vs (24 VDC)
Pin 4 not connected
Pin A1 (coaxial) Analogue modulation
Pin A2 (coaxial) Digital modulation
Dimensions 120 x 70 x 35 mm (LxWxH)
Weight 360 grams
Cooling Conduction, the base plate must be attached to a suitable heat sink. heat sink capable of dissipating 36 Watt.

Environmental Conditions

Warm up time 10 minutes for optimum stability
Base plate temperature +10°C … +60°C. For optimum output power stability constant base plate temperature should be provided.
Storage temperature -20°C … +70°C, non condensing

Absolute Maximum Ratings

Supply voltage max. +26 VDC
Analogue modulation
Voltage range @ 0 … +1 V -0.5 V … +1.1 V
Digital modulation
Level -0.5 V … +5.5 V
Maximum operating temperature +65°C base plate temperature

Quality Standards

EU 2002/95/EC (RoHS) compliant
EMC standards VDE 0871-B
FCC Rules Part 15-B
Thermal test 2h @ 70°C passive
Burn-in test 30 minutes @ maximum RF power output

Control Input

Operation Scheme of Analogue and Digital Modulation

Variants List / Ordering Codes

Other frequencies and customized versions are available on request.

Accessories

Connector Kit for AOM Driver Series A35xxx and A36xxx Part-No. 508A00169

AOM Driver MHPXXX-YYADM-A1 (Formerly N31xxx-yyADM) (24 to 260MHz, 2 to 20W)

The MHPxxx-yyADM-A1 driver is a RF driver module with analog and digital modulation input and up to 20 Watts Output into a 50 Ohm load. The model number is described as follows:

  • xxx = a fixed frequency of between 24 and 260 MHz crystal controlled.
  • yy = 2 to 20W nominal. Set by internal pot
  • A = Analog Modulation
  • D = Digital Modulation
  • M = OEM Module
Output Frequency (xxx) 24 MHz to 260 MHz ±0.01% quartz stabilized
Spurious Levels -40 dBc maximum
Harmonic Distortion -15 dBc maximum
Analog Input 0-1 Volt into 50 Ohms (+ 1 Volt = Full RF power; 0 Volt = minimum RF power)
Digital Input TTL Levels (TTL HIGH = FULL RF power; YYL LOW = minimum RF power)
Extinction Ratio 40 dB minimum
RF Rise/ Fall Time 30ns maximum, 20 ns typical, 10ns > 210MHz (PRF: 10 to 90%)
RF Output Power (yy) 2 to 20 Watts nominal. maximum output power set by internal pot.
Output Impedance 50 Ohms nominal
Supply Voltage + 24 VDC + 0.5 Volt
Supply Current 3 Amp maximum
Air Flow Across heat sink 18 CFM at 25 oC
MAXIMUM RATINGS
Supply Voltage + 28 Volts
Power Output No DC feedback allowed
Case Temperature + 550C.
CONNECTORS & MECHANICAL
RF Output Connector BNC female
Modulation Input Connector Feed Through Pin
Power Supply Connections Vcc: Vcc feed through Pin; Return: Feed through Pin
Physical Size 5.43" L x 2.42" H x 3.90" W

125 Watt Germanium Acousto-optic Modulator Driver: HP041-125ADADG-A10

The HP041-125ADADG-A10 RF driver provides up to 125 Watt output power at 40.68 MHz signal frequency. The driver can be operated with modulation frequencies (analogue and digital) up to 1 MHz. An operation scheme illustrates the interaction of the two modulation signals in detail.

Water cooling parts made from copper ensures highest standards for corrosion protection. Optimum EMC shielding and mechanical protection is achieved by an aluminium casing and a conductive surface passivation.

This product conforms to the requirements of the European Union Directive 2011/65/EU of the European Parliament and of the Council on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment.

Key Features

  • RF output power up to 125 Watt•
  • Copper water-cooling path•
  • Constant output power design•
  • High SWR and overheat safety shutdown•
  • Compact casing, fully shielded (EMC )

Applications:

Industrial (material processing): PCB via drilling; Marking and engraving; Light guide panel processing; Micro-perforation.

Device: AO Modulator
Supply voltage +24
Supply current max. 12.5 @ 125 W F output power
Maximum RF output power (adjustable) *

Adjustment range

> 15 W/mm2

< 1 … >125 Watt

Output impedance nom. 50 Ω
Frequency accuracy < ±30 ppm
RF ON/OFF ratio > 50 dB
Analogue modulation Impedance
Voltage range @ 50 Ω The voltage range corresponds to 0 to 100% of the potentiometer pre-adjusted maximum RF output power.
600 Ω
0 … +10
Digital modulation Impedance

Level

4.7 kΩ (pull-up)

High=≥ 3 … 5 (= RF on); Low=0 … < 2 (=RF off)

Maximum modulation frequency (digital and analogue) 1 [MHz]
RF output frequency 40.68 [MHz]
Harmonics distortion * < -30 [dBc]
Analogue modulation RF rise time / fall time(10 90%) * < 80 [ns]
igital modulation F rise time / fall time(10 … 90%) * < 80 [ns]

* into 50 Ω load

Connectors, Cooling, Dimensions, Weight

RF output connector BNC female
Control connector D-Sub 25-pole, female for pin assignment refer to section Control Connector
Power Supply Cords
red (or yellow)
black (or violet)
2x750±50 mm H07-K 1.5 mm2
+Vs (24VDC)
CGND (case ground)
Cooling Flow rate Water cooling; Cooling block material: Copper, 2 x G 1/4’’ thread fitted with 6mm push in connectors; More than 1 litre/minute at less than 25˚C
Diemnsions [mm] 200 x 100 x 52.5 (length x width x height)
Weight 1470 grams

Environmental Conditions

  • Warm up time: 10 minutes for optimum stability
  • Operating case temperature: < +50°C, safety shutdown at ≈55°C
  • Storage temperature: -20°C … +65°C, non condensing

Absolute Maximum Ratings

  • Supply voltage max.: +26 VDC
  • Analogue modulation voltage range @ 0 … +10 V: -0.5 V … +11 V
  • Digital modulation Level: -0.5 V … +5.5 V
  • Maximum operating temperature: +55°C heat sink / base plate temperature

Control Connector

D-Sub 25-pole, female, Pin assignment. Any signals refer to chassis ground (CGND ) unless denoted differently.

Pin1 RF ON status (out); Pin2 SWR fault indication (out); Pin3 Driver temperature fault indication (out); Pin4 Reset SWR fault / Init (in); Pin5 Interlock 2 fault indication (out); Pin6 Interlock 2 (in); Pin7 Interlock 1 (in); Pin8 Interlock 1 fault indication (out); Pin9 Driver temperature monitor (out); Pin10 Modulation Ground (MGND); Pin11 Analogue modulation 2 (ref. MGND); Pin12 Analogue modulation 1 (ref. MGND); Pin13 Power Level Select (ref. MGND); LOW →select Analogue Mod. 1; HIGH → select Analogue Mod. 2; Pin14…22 Chassis ground (CGND); Pin23…24 Modulation Ground (MGND); Pin25 not connected

Operation Scheme of Analogue and Digital Modulation

Ge AOM RF Driver (40/60MHz, 2x75 Watt)

The HP040-060-150ADG-A10-2Xdriver provides up to 150 Watt combined output power and is designed to drive dual frequency germanium acousto-optic modulators. The driver can be operated with modulation frequencies (analogue and digital) up to 1 MHz for RF amplitude control and up to 5 MHz for drive frequency control. Water cooling parts made from copper ensures highest standards for corrosion protection. Optimum EMC shielding and mechanical protection is achieved by an aluminium casing and a conductive surface passivation. This product conforms to the requirements of the European Union Directive 2011/65/EU of the European Parliament and of the Council on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment.

Key Features

  • Combined RF output power up to 150 Watt•
  • Constant output power design•
  • High SWR and Overheat safety shutdown•
  • Copper cooling parts•
  • Compact casing, fully shielded (EMC )

Applications:

Industrial (material processing): PCB via drilling; Marking and engraving; Micro-perforation.

Supply voltage +24 VDC
Supply current typ. 15A @ 150 W RF output power
Number of channels 2
Maximum RF output power (adjustable) *
Adjustment range
> 75 Watt W per channel
< 1 … >75 Watt per channel
Output impedance nom. 50 Ω
RF output frequency 40MHz and 60MHz switchable (RF Signal phase shift between channels at 40 and 60MHz)
Frequency accuracy < ±50 ppm
Frequency stability < ±50 ppm
Extinction ratio > 40 dB
Harmonics distortion* < -26 dBc @ 75W per channel
Spurious level * < -50 dBc
Analogue modulation
Impedance
Voltage range @ 50 Ω The voltage range corresponds to 0 to 100% of the potentiometer pre-adjusted maximum RF output power.


600 Ω
0 … +10 (0…+5 option)
Digital / Frequency modulation
Impedance Level
4.7 kΩ (pull-up)

TTL compatible (V_ IL= 0.8V, V_IH = 2.0); Logic High = RF On / 40MHz; Logic Low = RF Off / 60MHz

Maximum modulation frequency
(Amplitude – digital and analogue)
(Drive frequency)


1 MHz
5 MHz
Digital / Analogue modulation
RF rise time / fall time (10 … 90%)


< 100 ns

* into 50 Ω load)

Connectors, Cooling, Dimensions, Weight

  • RF output connector: 2xBNC female
  • Control connector: D-Sub 15-pole, male for pin assignment refer to section Input Connectors
  • Power supply connection: Primary: Molex 03-09-2021; Mating: Molex 03-09-1022 (Shell), 02-09-1104 (Crimp contacts); Secondary: Solder-in style connector or pin polarity assignment refer to section Input Connectors
  • Cooling: Cooling block material: Copper, 2 x G 1/4’’ thread fitted with 6mm push in connectors
  • Flow rate: More than 2 litre/minute at 250C ± 100C
  • Coolant pressure:< 100 psi (6.9 bar)
  • Dimensions [mm]: 240x110x123 (length x width x height)
  • Weight: 4 kg

STBR Series RF Drivers for STBR Series AOMs

1. FF Series typical fixed frequency RF drivers configurations:

Model STBR-FF-XX-B1-FY STBR-FF-XX-B2-FY STBR-FF-XX-B3-FY
Output Frequency XX MHz (compatible with the AO device)
Frequency control Quartz crystal referenced phase locked loop
Frequency Accuracy 0.015
Harmonic Content (dBc) <=-20
Frequency Stability 0.0015% minimum after 15 minute warmup
Output power Power is optimised for peak efficiency with supplied AO device
Output protection Power amplifiers used will tolerate an infinite VSWR without damage. Rated power is available only when a proper RF load is connected
Internal Pulse Generator N/A Pulse width: 100 to 500 nsec ± 10% adjustable, pulse generator with 5000 Hz to 100 KHz rep rate adjustable. Front panel switch for pulse/standby operation.
Rise/Fall Time To match AOM requirements
Modulation Type Analog amplitude modulation TTL compatible Pulse modulation, pulse monitor output via front panel BNC connector
Modulation Rate To match device requirements
Modulation Input 50 ohml 0-1V 330ohm; 0-5V Internal or external trigger
Operating Power 90-250 VAC, 50-60Hz, 55 W max
Enclosure The unit will be packaged in a 190mm (7.5inch) wide by 90mm (4inch) high by 220,, (8,75inch) deep instrument case. The rear panel heat sink increases the depth to 240mm(9.75inches) maximum. The size is exclusive of connectors
Environmental Nominal Lab conditions: Max temperature is +35 degC. The unit is not seals against moisture or condensing humidity

2. VF Series typical fixed frequency RF drivers configurations:

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