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CS5467_11 Datasheet, PDF (1/46 Pages) Cirrus Logic – Four-channel Power/Energy IC | |||
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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 (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 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 ïï 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+
RESET
VD+
IIN1+
IIN1-
PGA
VIN1+
VIIN1-
x10
IIN2+
IIN2-
PGA
VIN2+
VIN2-
VREFIN
VREFOUT
x10
x1
Voltage
Reference
AGND
http://www.cirrus.com
4th Order ïï
Modulator
Digital
Filter
HPF
Option
2nd Order ïï
Modulator
Digital
Filter
HPF
Option
4th Order ïï
Modulator
Digital
Filter
HPF
Option
2nd Order ïï
Modulator
Digital
Filter
HPF
Option
Power
Calculation
Engine
Serial
Interface
E-to-F
MODE
CS
SDI
SDO
SCLK
INT
E1
E2
E3
Calibration
Power
Monitor
PFMON
Temperature
Sensor
System
Clock
/K
Clock
Generator
XIN XOUT CPUCLK DGND
Copyright ï£ Cirrus Logic, Inc. 2011
(All Rights Reserved)
JAN â11
DS714F3
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