CS5463_08 Datasheet, PDF (1/46 Pages) Cirrus Logic – Single Phase, Bi-directional Power/Energy IC

CS5463
Single Phase, Bi-directional Power/Energy IC
Features
z Energy Data Linearity: ±0.1% of Reading
over 1000:1 Dynamic Range
z 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
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
z Simple Three-wire Digital Serial Interface
z “Auto-boot” Mode from Serial E²PROM
z 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 ∆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 Page 45.
VA+
RESET
VD+
IIN+
PGA
IIN-
4th Order ∆Σ
Modulator
Digital
Filter
HPF
Option
VREFIN
x1
Temperature
Sensor
VIN+
VIN-
x10
2nd Order ∆Σ
Modulator
Digital
Filter
HPF
Option
VREFOUT
Voltage
Reference
Power
Monitor
System
Clock
/K
Clock
Generator
Power
Calculation
Engine
Serial
Interface
E-to-F
MODE
CS
SDI
SDO
SCLK
INT
E1
E2
E3
Calibration
AGND
PFMON
XIN XOUT CPUCLK
DGND
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Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
APR ‘08
DS678F2