CS5464_07 Datasheet, PDF (1/46 Pages) Cirrus Logic – Three-channel, Single-phase Power/Energy IC

CS5464
Three-channel, Single-phase Power/Energy IC
Features & Description
Description
• Energy Linearity: ±0.1% of Reading over The CS5464 is a watt-hour meter on a chip. It
1000:1 Dynamic Range
measures line voltage and current and calcu-
• On-chip Functions:
- Voltage and Current Measurement
lates active, reactive, apparent power, energy,
power factor, and RMS voltage and current.
- Active, Reactive, and Apparent Power/Energy
- RMS Voltage and Current Calculations
- Current Fault and Voltage Sag Detection
- Calibration
- Phase Compensation
There are two separate inputs to measure line,
ground, and/or neutral current enabling the
meter to detect tampering and to continue oper-
ating. An internal RMS voltage reference can be
used if voltage measurement is disabled by
- Temperature Sensor
tampering.
- Energy Pulse Outputs
• Meets Accuracy Spec for IEC, ANSI, & JIS
• Low Power Consumption
Four ∆Σ analog-to-digital converters are used to
measure voltage, two currents, and temperature.
• Tamper Detection and Correction
The CS5464 is designed to interface to a variety
• Ground-referenced Inputs with Single
of voltage and current sensors.
Supply
Additional features include system-level calibra-
• On-chip 2.5 V Reference (25 ppm / °C typ.) _{tion, voltage sag and current fault detection,}
• Power Supply Monitor Function
peak detection, phase compensation, and ener-
• Three-wire Serial Interface to
Microcontroller or E²PROM
gy pulse outputs.
• Power Supply Configurations
GND: 0 V, VA+: +5 V, VD+: +3.3 V to +5 V
ORDERING INFORMATION
See Page 44.
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2007
(All Rights Reserved)
MAR ‘07
DS682F1