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CS5467 Datasheet(PDF) 1 Page - Cirrus Logic |
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CS5467 Datasheet(HTML) 1 Page - Cirrus Logic |
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1 / 46 page  Copyright © Cirrus Logic, Inc. 2007 (All Rights Reserved) http://www.cirrus.com CS5467 Four-channel Power / Energy IC Features & Description • Energy Linearity: ±0.1% of Reading over 1000:1 Dynamic Range • On-chip Functions: - Voltage and Current Measurement - Active, Reactive, and Apparent Power/Energy - RMS Voltage and Current Calculations - Current Fault and Voltage Sag Detection - Calibration - Phase Compensation - Temperature Sensor - Energy Pulse Outputs • Meets Accuracy Spec for IEC, ANSI, & JIS • Low Power Consumption • Voltage Tamper Correction • Ground-referenced Inputs with Single Supply • On-chip 2.5 V Reference (25 ppm / °C typ.) • Power Supply Monitor Function • Three-wire Serial Interface to Microcontroller or E2PROM • Power Supply Configurations GND: 0 V, VA+: +5 V, VD+: +3.3 V to +5 V Description The CS5467 is a watt-hour meter on a chip. It measures line voltage and current and calcu- lates active, reactive, apparent power, energy, power factor, and RMS voltage and current. An internal RMS voltage reference can be used if voltage measurement is disabled by tampering. Four ∆Σ analog-to-digital converters are used to measure two voltages and two currents. Option- ally, voltage2 channel can be used for temperature measurement. The CS5467 is designed to interface to a variety of voltage and current sensors. Additional features include system-level calibra- tion, voltage sag and current fault detection, peak detection, phase compensation, and ener- gy pulse outputs. 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 ‘07 DS714F1 |
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