DDC1128
Features
- 1 Single-Chip Solution to Directly Measure 128 Low-Level Currents
- Proven High-Precision, True Integrating Architecture with 100% Charge Collection
- Easy Upgrade for Existing DDC Family Applications
- Low Power: 3 m W/channel at 3 k SPS
- Extremely Linear:
INL = ±0.025% of Reading ±1 ppm of FSR
- Low Noise: 6.3 ppm of FSR
- Adjustable Full-Scale Range
- Adjustable Speed
- Data Rates up to 6 k SPS with 20-bit Performance
- Integration Times as low as 160 μs
- Daisy-Chainable Serial Interface
- In-Package Bypass Capacitors Simplify PCB
Design Area and Design plexity
2 Applications
- CT Scanner DAS
- Photodiode Sensors
- X-Ray Detection Systems
3 Description
The DDC1128 is a 20-bit, 128-channel, current-input analog-to-digital (A/D) converter. It bines both current-to-voltage and A/D conversion so that 128 separate low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized.
For each of the 128 inputs, the DDC1128 uses the proven...
