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CS5451A Datasheet Delta-sigma Analog-to-digital Converter

Manufacturer: Cirrus Logic

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General Description

The CS5451A is a highly integrated delta-sigma ( analog-to-digital converter (ADC) developed for the power measurement industry.

The CS5451A combines six  ADCs, decimation filters, and a serial interface on a single chip.

The CS5451A interfaces directly to a current transformer or shunt to measure current, and to a resistive divider or transformer to measure voltage.

Overview

CS5451A Six-channel, Delta-sigma Analog-to-digital Converter.

Key Features

  • Synchronous Sampling.
  • On-chip 1.2 V Reference (25 ppm/°C typ. ).
  • Power Supply Configurations: - VA+ = +3 V; VA- = -2 V; VD+ = +3 V - Supply Tolerances: ±10%.
  • Power Consumption - 23 mW Typical at VD+ = +3 V.
  • Simple Four-wire Serial Interface.
  • Charge pump driver output generates negative power supply.
  • Ground-referenced Bipolar Inputs.

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