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DDC3256 - Current-Input Analog-To-Digital Converter

General Description

The DDC3256 is a 24-bit, 256-channel, current-input analog-to-digital (A/D) converter.

It combines both, current-to-voltage conversion by current integration, and A/D conversion.

Overview

DDC3256 SLASFA0 – JUNE 2023 DDC3256 256-Channel, Current-Input Analog-To-Digital Converter.

Key Features

  • Single-chip solution to directly measure 256 lowlevel currents simultaneously.
  • Adjustable full-scale charge range up to 320 pC.
  • Input current: 1 µA (maximum).
  • Adjustable speed with integration times as low as 50 µs (20 KSPS per channel).
  • Resolution: 24 bit.
  • Low power dissipation: 1.2 mW/channel.
  • Integral non-linearity: ±0.025% of reading ±1 ppm of full scale range (all channels active).
  • Low noise: 0.26 fCrms at 320 pC FSR w.