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1 / 46 page Advance Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. Copyright © Cirrus Logic, Inc. 2006 (All Rights Reserved) http://www.cirrus.com ADVANCE RELEASE CS5467 Four-channel Power/Energy IC Features • Energy Data Linearity: ±0.1% of Reading over 1000:1 Dynamic Range • On-chip Functions: - Instantaneous Voltage, Current, and Power - IRMS and VRMS, Active, Reactive, and Apparent Power - Current Fault and Voltage Sag Detect - System Calibrations / Phase Compensation - Temperature Sensor - Energy-to-pulse Conversion - Positive-only Accumulation Mode • Meets Accuracy Spec for IEC, ANSI, & JIS • Low Power Consumption • GND-referenced Signals with Single Supply • On-chip, 2.5 V Reference • Power Supply Monitor • Simple Three-wire Digital Serial Interface • “Auto-boot” Mode from Serial E2PROM. • Power Supply Configurations VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V Description The CS5467 is an integrated power measure- ment device which combines four ∆Σ analog-to-digital converters, power calculation engine, energy-to-frequency converter, and a serial interface on a single chip. It is designed to accurately measure instantaneous current and voltage and calculate VRMS, IRMS, instantaneous power, active power, apparent power, and reac- tive power for high-performance power measurement applications. The CS5467 is optimized to interface to shunt re- sistors or current transformers for current measurement, and to resistive dividers or poten- tial transformers for voltage measurement. The CS5467 also features system-level calibra- tion, a temperature sensor, voltage sag & current fault detection, and phase compensation. ORDERING INFORMATION: See Page 45. VA+ VD+ IIN1+ IIN1- VIN2+ VIN2- VREFIN VREFOUT AGND XIN XOUT CPUCLK DGND CS SDO SDI SCLK INT Voltage Reference System Clock /K Clock Generator Serial Interface E-to-F Power Monitor PFMON x1 RESET Digital Filter Calibration MODE Power Calculation Engine 4th Order ∆Σ Modulator 2nd Order ∆Σ Modulator Temperature Sensor Digital Filter PGA HPF Option HPF Option E1 E2 E3 x10 IIN2+ IIN2- 4th Order ∆Σ Modulator Digital Filter PGA HPF Option VIN1+ VIIN1- Digital Filter 2nd Order ∆Σ Modulator HPF Option x10 MAR ‘06 DS714A1 |
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