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ADAS1128:  128 Channel, 24-bit Current to Digital ADC

Product Details


The ADAS1128 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-holds and two high speed, high resolution ADCs with configurable sampling rate and resolution up to 24 bits.

All converted channel results are output on a single LVDS self-clocked serial interface reducing external hardware.

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

The ADAS1128 is housed in a mini-BGA package, 10mm by 10mm.

Applications

  • CT Scanner Data Acquisition
  • Photodiode Sensors and Power Monitoring
  • Spectroscopy
  • High Channel Count Data Acquisition Systems (current or voltage input)

FEATURES and BENEFITS

  • 128 Channel low level currents- to-digital converter
  • Up to 24 bit resolution
  • Up to 20ksps (50μs integration time)
  • Simultaneous Sampling
  • Ultra Low noise ( down to 0.4fC (2500e-) )
  • User adjustable full-scale range
  • INL: ±0.025% of Reading ±1ppm of FSR
  • See data sheet for additional features

Functional Block Diagram for ADAS1128

ADAS1128 Data Converter for CT Scanners is Named Innovation of the Year by EDN
ADAS1128 Data Converter for CT Scanners is Named Innovation of the Year by EDN

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) (pdf, 30,264 bytes). 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

Documentation

Title Content Type File Type
ADAS1128: 128 Channel, 24-bit Current-to-Digital ADC Data Sheet (Rev SpC, 09/2010) (pdf, 68 kB) Data Sheets PDF
ADAS1128: 28-channel, 24-bit, 20 kSPS Current-to-Digital Converter
The ADAS1128 is a 128-channel, analog-current-to-digital converter. It contains 128 low-power, low-noise, low-input current integrators, simultaneous sample-holds and two high-speed, high-resolution ADCs with configurable sampling rate and resolution up to 24 bits. The primary application is CT Scanners.
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MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Semiconductors: The Heart of Next-Generation Medical Devices
Highly integrated chips are paving the way for smaller, more portable equipment.
(Design News, May 18, 2009)
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Healthcare ICs
Healthcare ICs Solutions Bulletin, Volume 11, Issue 2
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RAQs index Rarely Asked Questions HTML
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Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.


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