DDC1128 Overview
Description
The DDC1128 is a 20-bit, 128-channel, current-input analog-to-digital (A/D) converter. It combines 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.
Key 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 mW/channel at 3 kSPS
- 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 kSPS 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 Complexity
