Description

The CS5471 is a highly integrated Delta-Sigma (∆Σ) Analog-to-Digital Converter (ADC) developed for the Power Measurement Industry. The CS5471 combines two ∆Σ ADCs, decimation filters, and a serial interface on a single chip. The CS5471 interfaces directly to a current transformer or shunt to measure current, and resistive divider or transformer to measure voltage. The product features a serial interface for communication with a micro-controller or DSP. The product is initialized and fully functional upon reset, and includes a Voltage Reference.

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

– 10 mW Typical at VD+ = +3 V

● Simple Four-wire Serial Interface

● Charge Pump Driver output generates negative power supply.

● Ground-Referenced Bipolar Inputs