CS5463
Single Phase, Bi-directional Power/Energy IC
Features
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
z Energy Data Linearity: ±0.1% of Reading
over 1000:1 Dynamic Range
z On-chip Functions:
- Instantaneous Voltage, Current, and Power
- I
and V
, Apparent, Reactive, and Active
RMS
RMS
(Real) Power
voltage, and calculate V
, I
, instanta-
- Active Fundamental and Harmonic Power
- Reactive Fundamental, Power Factor, and Line
Frequency
- Energy-to-pulse Conversion
- System Calibrations and Phase Compensation
- Temperature Sensor
RMS
RMS
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.
z Meets accuracy spec for IEC, ANSI, JIS.
z Low Power Consumption
z Current Input Optimized for Sense Resistor.
z GND-referenced Signals with Single Supply
z On-chip 2.5 V Reference (25 ppm/°C typ)
z Power Supply Monitor
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.
z Simple Three-wire Digital Serial Interface
2
z “Auto-boot” Mode from Serial E PROM
z Power Supply Configurations:
ORDERING INFORMATION:
VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V
See Page 44.
VA+
RESET
VD+
IIN+
IIN-
4th Order ∆Σ
Modulator
Digital
Filter
HPF
Option
PGA
MODE
CS
SDI
Power
Calculation
Engine
SDO
SCLK
INT
Temperature
Sensor
Serial
Interface
VREFIN
x1
E1
E2
E3
VIN+
VIN-
2nd Order ∆Σ
Modulator
Digital
Filter
HPF
Option
E-to-F
x10
System
Clock
Clock
Generator
Voltage
Reference
Power
Monitor
/K
Calibration
DGND
VREFOUT
PFMON
XIN XOUT CPUCLK
AGND
AUG ‘05
DS678PP1
Copyright © Cirrus Logic, Inc. 2005
http://www.cirrus.com
(All Rights Reserved)