ADAS1128
PRODUCTION128 Channel, 24-Bit Current to Digital ADC
Overview
- 128-channel, low level current-to-digital converter
- Up to 24-bit resolution
- Up to 19.7 kSPS (50.7 μs integration time)
- Simultaneous sampling
- No dead time, no loss of charge
- Ultralow noise (down to 0.4 fC [2500e−])
- User-adjustable full-scale range
- INL: ±0.025% of reading ±0.75 ppm of FSR
- See data sheet for additional information
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-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 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 ADAS1128 uses the separate supply IOVDD to reduce digital noise effect on the conversions.
The ADAS1128 is in a 10 mm × 10 mm, mini-BGA package.
Applications
- 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)
Documentation
Data Sheet 1
Technical Articles 2
Request an NDA
Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). Please send your project details, company information and contact by e-mail to ADAS@analog.com.
Please contact the ADC Development Group for additional technical information.
For additional ADI Healthcare Products and related information, please visit www.analog.com/healthcare.
Video 1
This is the most up-to-date revision of the Data Sheet.