Features and Benefits

  • 128-channel, low level current-to-digital converter
  • Up to 24-bit resolution
  • Up to 22.6 kSPS (44.2 µs integration time)
  • Simultaneous sampling
  • No dead time, no loss of charge
  • Ultralow noise down to 0.32 fC rms (2000 e)
  • User adjustable full-scale range
  • INL: ±0.05% of reading of ±1.0 ppm FSRI
  • Low power dissipation: 2.25 mW per channel
  • LVDS self clocked serial data interface
  • Serial peripheral interface (SPI) configuration registers (daisy-chain capability)
  • On-board temperature sensor and reference buffer
  • 10 mm × 10 mm, 242-ball CSP_BGA package
  • See data sheet for additional features

Product Details

The ADAS1134 is a 128-channel, current-to-digital, analog-to-digital converter (ADC). It contains 128 low power, low noise, low input current integrators, simultaneous sample-and-holds, and two high speed, high resolution ADCs with configurable sampling rate and resolutions up to 24 bits.

All converted channel results are output on a single, low voltage differential signaling (LVDS), self clocked serial interface, which reduces external hardware.

An SPI-compatible serial interface allows configuration of the ADC using the SDI input. The SDO output allows the user to daisy-chain several ADCs on a single, 3-wire bus. The ADAS1134 uses IOVDD, a separate supply, to reduce digital noise effect on the conversions.

The ADAS1134 is available in a 10 mm × 10 mm, 242-ball CSP_BGA package.


  • Medical, industrial, and security CT scanner data acquisition
  • Photodiode sensors
  • Dosimetry and radiation therapy systems
  • Optical fiber power monitoring
  • X-ray detection systems
  • High channel count data acquisition systems (current or voltage inputs)
A short-form datasheet for this product is available for download from this web page. Complete documentation including detailed hardware and software guides are available upon completion of a Non-Disclosure Agreement (NDA). Send your completed forms by e-mail to ADAS@analog.com. Additional support is available from your Analog Devices local sales.

Please contact the ADC Development Group for additional technical information.

For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare.

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.