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CS5460 Datasheet(PDF) 1 Page - Cirrus Logic |
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CS5460 Datasheet(HTML) 1 Page - Cirrus Logic |
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1 / 34 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. 2000 (All Rights Reserved) P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com CS5460 Single Phase Bi-Directional Power/Energy IC Features l Energy Data Linearity: 0.1% of Reading over 1000:1 Dynamic Range l On-Chip Functions: Energy, I ∗ V, IRMS and VRMS, Energy to Pulse-Rate Conversion l Complies with IEC 687/1036, JIS l Power Consumption <12 mW l Interface Optimized for Shunt Sensor l Phase Compensation l Ground-Referenced Signals with Single Supply l System Calibration l On-chip 2.5 V Reference (60 ppm/°C drift) l Simple Three-wire Serial Interface l Watch Dog Timer l Power Supply Monitor l Power Supply Configurations - VA+ = +5 V; VA- = 0V; VD+ = +3 V to +5 V - VA+ = +2.5 V; VA- = -2.5 V; VD+ = +3 V Description The CS5460 is a highly integrated ∆Σ Analog-to-Digital Converter (ADC) which combines two ∆Σ ADCs, high speed power calculation functions, and a serial interface on a single chip. It is designed to accurately measure and calculate: Energy, Instantaneous Power, IRMS, and VRMS for single phase 2 or 3-wire power meter applica- tions. The CS5460 interfaces to a low cost shunt or transformer to measure current, and resistive divider or transformer to measure voltage. The CS5460 features a bi-directional serial interface for communication with a micro-controller and a fixed-width programmable fre- quency output that is proportional to energy. The product is initialized and fully functional upon power-up, and in- cludes facilities for system-level calibration under control of the user program. ORDERING INFORMATION: CS5460-BS -40 °C to +85°C 24-pin SSOP PGA x10,x50 VA+ VD+ IIN+ IIN- VIN+ VIN- VREFIN VREFOUT VA- XIN XOUT CPUCLK DGND CS SDO SDI SCLK INT EOUT Digital Filter High Pass Filter Voltage Reference System Clock /K Clock Generator Serial Interface Power Calculation Engine (Energy I * V I ,V ) RMS RMS E-to-F Power Monitor PFMON x1 x10 4 Order ∆Σ Modulator th RESET Digital Filter Calibration SRAM EDIR High Pass Filter 2 Order ∆Σ Modulator nd Watch Dog Timer JAN ‘00 DS279PP5 |
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