Subassembly > VM32PA2.0


VME Board


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Model VM32PA2.0
>100 kHz to 2.0 MHz
Programmable Amplifier






Frequency Devices' Model VM32PA2.0 comprises a family of VMEbus amplifier boards offering software programmable differential amplifiers in a single width B-size (6U) VME form factor. VM32PA2.0 boards provide simultaneous access to 32, DC-coupled wideband signals while providing programmable gain from -12dB to +36dB, in 6dB steps for signal bandwidths >100 kHz to 2.0 MHz. VM32PA2.0 boards may be configured with 8, 16 or 32 channels. The boards conform to VME revision C.1 as an A16/D16 Slave. Available options include AC coupled input and/or differential output.


  • Simultaneous access over 32 channels offers a low cost, versatile and convenient way to provide programmable amplification.
  • Three active read/write registers provide programming and set-up verification.
  • Phase match of ±2.0° and gain accuracy of ±0.1 dB provides precision performance solutions to design engineers, system integrators and OEM's.
  • High channel count density without sacrificing performance maximizes chassis utilization.




  • Sonar, navigation & Aerospace
  • Engine test and simulation
  • Acoustic and vibration analysis
  • Laboratory R & D
  • Satellite & Telecommunications
  • Laboratory R & D
  • Automatic test equipment (ATE)
  • Industrial process control

Gain Amplifier

PGA5-2.0   -12 dB to +36 dB in 6 dB steps



(@ 25°C and rated power input)

Analog Input
  • Impedance: 1 MΩ differential, 500 kΩ to ground, each leg
  • Linear Input Range: 8V pk-pk, each leg
  • CMRR: >/=50 dB, DC to 100 kHz, >/=40 dB, 100 kHz to 2.0 MHz
  • Maximum Input Range: 20V pk-pk, each leg
  • AC Couple (Optional Fixed Freq.):
    20 Hz to 1.0 kHz

Analog Output

  • Impedance: 50 Ω, single-ended
  • Drive Capability: >/=50 Ω load impedance
  • Linear Operating Range: 2V pk-pk
  • Offset Voltage: <25 mV typ. at output
  • Offset Temp. Coeff.: 1.5 mV/°C at output, 25 mV/°C referred to input

Programmable Amplifier

  • Signal Bandwidth (-3dB): 2 MHz
  • Amplitude Match:
    0.2dB over specified bandwidth, chan. to chan.
  • Phase Match: ±2.0° over specified bandwidth
  • Noise Voltage Density, RTI:
  • Distortion (2V pk-pk): </= -60dB, 20 Hz to 100 kHz, </= -50 dB, 100 kHz to 2.0 MHz
  • Gain Programming: 0.25X to 64X in factors of 2
  • Gain Accuracy: ± 0.1 dB
  • Interface: A16/D16, D08 (EO), Slave
  • Registers: Three active R/W registers in 64 byte blocks

Power Supply

  • From VME Backplane:
    +5V - 1.0A max.,
    ±12 V - 1.25A max.


  • Operating Temperature: 0°C to +70°C
  • Storage Temperature: -25°C to +85°C
  • Humidity: 0-95% non-condensing


  • Card Size: VMEbus 6U single slot,
    9.17 x 6.3 inches, (233 x 160 mm)
  • No. of Input Channels: 32 Differential
  • No. of Output Channels: 32 Single ended, Two groups of 16
  • Mating Connectors:
    Input: Male high density 78-pin D sub, Quantity 1 Output: Female high density 44-pin D sub, Quantity 2
  • Weight: 1 LB., (454 grams)

Ordering Information

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Frequency Devices, Inc.
Your engineering partner for signal conditioning
  927 Fosse Rd
Ottawa, IL 61350



Phone: (815) 434-7800

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