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CS5471 Datasheet(PDF) 1 Page - Cirrus Logic |
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CS5471 Datasheet(HTML) 1 Page - Cirrus Logic |
1 / 14 page Preliminary Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. 1 Copyright Cirrus Logic, Inc. 2001 (All Rights Reserved) P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com CS5471 Dual-Channel Delta-Sigma Analog-to-Digital Converter Features l Synchronous Sampling l On-chip 1.2 V Reference (25 ppm/°C typ.) l Power Supply Configurations: – VA+ = +3 V; VA- = -2 V; VD+ = +3 V – Supply tolerances ±10% l Power Consumption – 10 mW Typical at VD+ = +3 V l Simple Four-wire Serial Interface l Charge Pump Driver output generates negative power supply. l Ground-Referenced Bipolar Inputs Description The CS5471 is a highly integrated Delta-Sigma ( ∆Σ) An- alog-to-Digital Converter (ADC) developed for the Power Measurement Industry. The CS5471 combines two ∆Σ ADCs, decimation filters, and a serial interface on a sin- gle 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 mi- cro-controller or DSP. The product is initialized and fully functional upon reset, and includes a Voltage Reference. ORDERING INFORMATION: CS5471-BS -40 °C to +85°C 20-pin SSOP VREFIN VREFOUT + - + - AGND XIN DGND SE FSO SDO SCLK Voltage Reference Serial Interface 4th Order ∆Σ Modulator 2nd Order ∆Σ Modulator Decimation Filter Decimation Filter x1, 20 x1 x1 VA- CLOCK CPD OWRS Pulse Output Regulator GAIN VA+ VD+ RESET IIN IIN VIN VIN JUL ‘01 DS480PP5 |
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