256-Channel Analog-to-Digital Converter

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  • Features
  • Technical Details
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256-Channel Analog-to-Digital Converter

The LEGION ADC  unit offers fully parallel operation for simultaneous data acquisition from all channels without multiplexing in an ultra-compact external USB enclosure. Each unit supports 128- and 256-element detectors. Up to four ADC units can be operated in parallel to enable an unprecedented 1024 data acquisition channels. Incoming analog signals can be amplified on each channel by a fixed 40 dB using optional, integrated preamplifiers.


  • Compact, durable and light enclosures with integrated cooling fans

  • Streaming ADCs for continuous data acquisition with no buffering or multiplexing

  • Each analog channel has integrated amplifier with digitally controlled gain

  • Acoustoelectrics

  • Generate trigger output at defined rate or repetition of external trigger input with programmed delay

  • Connect up to four units in parallel and acquire more data at fast data acquisition rates

  • Sync external hardware with data acquisition using electronic or optical IN/OUT ports

  • Standalone control software based on MATLAB, open SDK written in C++ and access to raw RF data

Technical Specifications

  • 128/256-channels
  • 9 to 48 dB programmable gain (49-88 dB w/ optional preamplifiers)
  • 12.5 kHz to 25 MHz analog bandwidth (40 kHz to 25 MHz w/ optical preamplifiers)
  • 12-bit resolution
  • 0.3- 40 MSPS sampling rate
  • 50 Ω input impedance (2.2 MΩ w/ optional preamplifiers)
  • Up to 200 Hz (256-ch) or 400 Hz (128-ch) trigger/frame rate
  • Up to 4096 points/frame/channel
  • Choice of input connectors for 128- or 256-probes or arrays


  • Photoacoustics (Optoacoustics)

  • X-ray Induced Acoustics

  • Thermoacoustics

  • Acoustoelectrics

  • 3D Tomography

  • Photoacoustic Microscopy (PAM)

  • 2D Imaging

  • Multi-Sensor Monitoring

  • Non-Destructive Testing

  • Transducer Manufacturing

  • Low Voltage Ultrasonics