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DDC232 - Analog-to-Digital Converter

Description

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.

Features

  • 1.
  • 2 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 Speed.
  • Data Rate up to 6kSPS.
  • Integration Times as low as 166.5ms.
  • Daisy-Chainable Serial Interface.
  • In-Package Bypass Capacitors Simplify P.

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Other Datasheets by Texas Instruments

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DDC2256A Current-Input Analog-To-Digital Converter
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Full PDF Text Transcription

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DDC232 www.ti.com 32-Channel, Current-Input Analog-to-Digital Converter Check for Samples: DDC232 SBAS331D – AUGUST 2004 – REVISED APRIL 2010 FEATURES 1 •2 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 Speed – Data Rate up to 6kSPS – Integration Times as low as 166.5ms • Daisy-Chainable Serial Interface • In-Package Bypass Capacitors Simplify PCB Design APPLICATIONS • CT Scanner DAS • Photodiode Sensors • X-Ray Detection Systems The DDC232 uses a +5V analog supply and a +2.7V to +3.6V digital supply.
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