DDC232 - Burr-Brown

DDC232 Current-Input Analog-to-Digital Converter

The DDC232 is a 20-bit, 32-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage and A/D conversion so that 32 separate low-level current output devices, such as photodiodes, can be directly connected to its inputs and digitized. For each of the 32 inputs, the DDC232 provides a dual-switched integrator front-end. This .

Features

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• SINGLE-CHIP SOLUTION TO DIRECTLY MEASURE 32 LOW-LEVEL CURRENTS HIGH-PRECISION, TRUE INTEGRATING FUNCTION INTEGRAL LINEARITY: ±0.025% of Reading ±1.0ppm of FSR VERY LOW NOISE: 5.3ppm of FSR LOW POWER: 7mW/channel ADJUSTABLE FULL-SCALE RANGE ADJUSTABLE DATA RATE: Up to 6kSPS
  – Integration Times Down to 166.5µs DAISY-CHAINABLE SERIAL INTERFACE The DDC232 has a serial interface designed for daisy-chaining in multi-device systems. Simply connect the output of one device to the input of the next to create the chain. Common clocking feeds all the devices in the chain so that the.