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
Description
The CS5463 is an integrated power measure-
ment device which combines two
∆Σ
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
VD+
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
VA+
RESET
IIN+
IIN-
PGA
4th Order
∆Σ
Modulator
Digital
Filter
HPF
Option
MODE
CS
SDI
VREFIN
x1
Temperature
Sensor
Power
Calculation
Engine
Serial
Interface
SDO
SCLK
INT
VIN+
VIN-
x10
2nd Order
∆Σ
Modulator
Digital
Filter
HPF
Option
E-to-F
E1
E2
E3
VREFOUT
Voltage
Reference
Power
Monitor
System
Clock
/K
Clock
Generator
Calibration
AGND
PFMON
XIN XOUT CPUCLK
DGND
Copyright
©
Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUG ‘05
DS678PP1
CIRRUS [ CIRRUS LOGIC ]
