Cirrus Logic CS5463 - Manual

Copyright
 Cirrus Logic, Inc. 2011
(All Rights Reserved) http://www.cirrus.com
CS5463
Single Phase, Bi-directional Power/Energy IC
Features
 Energy Data Linearity: ±0.1% of Reading
over 1000:1 Dynamic Range
 On-chip Functions:
- Instantaneous Voltage, Current, and Power
- I
RMS
and V
RMS
, Apparent, Reactive, and Active
(Real) Power
- Active Fundamental and Harmonic Power
- Reactive Fundamental, Power Factor, and Line
Frequency
- Energy-to-pulse Conversion
- System Calibrations and Phase Compensation
- Temperature Sensor
 Meets accuracy spec for IEC, ANSI, JIS.
 Low Power Consumption
 Current Input Optimized for Sense Resistor.
 GND-referenced Signals with Single Supply
 On-chip 2.5 V Reference (25 ppm/°C typ)
 Power Supply Monitor
 Simple Three-wire Digital Serial Interface
 “Auto-boot” Mode from Serial E
2
PROM
 Power Supply Configurations:
VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V
Description
The CS5463 is an integrated power measure-
ment device which combines two

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 V
RMS
, I
RMS
, instanta-
neous power, apparent power, active power, and
reactive power for single-phase, 2- or 3-wire
power metering applications.
The CS5463 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 CS5463 features a bi-directional serial inter-
face for communication with a processor and a
programmable energy-to-pulse output function.
Additional features include on-chip functionality
to facilitate system-level calibration, temperature
sensor, voltage sag detection, and phase
compensation.
ORDERING INFORMATION:
See Page 45.
VA+ VD+
IIN+
IIN-
VIN+
VIN-
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 
Modulator
2nd Order 
Modulator
Temperature
Sensor
Digital
Filter
PGA
HPF
Option
HPF
Option
E1
E2
E3
x10
APR ‘11
DS678F3