Current-to-Digital ADC. ADAS1126 Datasheet
32-Channel, 24-Bit Current-to-Digital ADC
32-channel, low level current-to-digital converter
Up to 24-bit resolution
Up to 19.7 kSPS (50.7 µs integration time)
Ultralow noise (down to 0.4 fC [2500e−])
User-adjustable full-scale range
INL: ±0.025% of reading ±0.75 ppm of FSR
Very low power dissipation: 12.5 mW/channel
LVDS self-clocked serial data interface
SPI configuration registers (daisy-chain)
On-board temperature sensor and reference buffer
10 mm × 10 mm, mini-BGA package
Low cost external components
Reference design with reference layout
FPGA Verilog code
The ADAS1126 is a 32-channel, current-to-digital, analog-to-
digital converter (ADC). It contains 32 low power, low noise,
low input current integrators, simultaneous sample-and-holds,
and a 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
ADAS1126 uses the separate supply IOVDD to reduce the
digital noise effect on the conversions.
The ADAS1126 is in a 10 mm × 10 mm, mini-BGA package.
Medical, industrial, and security CT scanner data acquisition
Dosimetry and radiation therapy systems
Optical fiber power monitoring
X-ray detection systems
High channel-count data acquisition systems (current or
FUNCTIONAL BLOCK DIAGRAM
2.5V 3.3V TO NEXT SDI
TO ALL ADCs
FROM DOUT OF
FROM PREVIOUS OTHER ADCs
For more information about the ADAS1126, email: email@example.com.
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Last Content Update: 02/23/2017
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