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CS5464 Datasheet(PDF) 1 Page - Cirrus Logic |
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CS5464 Datasheet(HTML) 1 Page - Cirrus Logic |
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1 / 46 page  Copyright Cirrus Logic, Inc. 2011 (All Rights Reserved) http://www.cirrus.com CS5464 Three-channel, Single-phase 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 • Tamper Detection and Correction • Ground-referenced Inputs with Single Supply • On-chip 2.5 V Reference (40 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 CS5464 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. There are two separate inputs to measure line, ground, and/or neutral current enabling the me- ter to detect tampering and to continue operating. An internal RMS voltage reference can be used if voltage measurement is disabled by tampering. Four analog-to-digital converters are used to measure voltage, two currents, and temperature. The CS5464 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 44. APR ‘11 DS682F3 |
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