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CS5461A Datasheet

  • CS5461A

  • SINGLE PHASE BI-DIRECTIONAL POWER/ENERGY IC

  • 42頁(yè)

  • CIRRUS

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CS5461A
Single Phase, Bi-directional Power/Energy IC
Features
鈥?Energy Data Linearity: 鹵0.1% of Reading over
1000:1 Dynamic Range
Description
The CS5461A is an integrated power measure-
ment device which combines two
鈭單?/div>
analog-to-digital converters, power calculation
鈥?On-chip Functions:
engine, energy-to-frequency converter, and a
-
Instantaneous Voltage, Current, and Power
serial interface on a single chip. It is designed to
-
I
RMS
and V
RMS
, Apparent and Active (Real) Power
accurately measure instantaneous current and
-
Energy-to-pulse Conversion for Mechanical
voltage, and calculate V
RMS
, I
RMS
, instanta-
Counter/Stepper Motor Drive
neous power, apparent power, and active power
-
System Calibrations and Phase Compensation
for single-phase, 2- or 3-wire power metering
-
Temperature Sensor
applications.
-
Voltage Sag Detect
鈥?Meets Accuracy Spec for IEC, ANSI, & JIS.
鈥?Low Power Consumption
鈥?Current Input Optimized for Sense Resistor.
鈥?GND-referenced Signals with Single Supply
鈥?On-chip 2.5 V Reference (25 ppm/擄C typ)
鈥?Power Supply Monitor
鈥?Simple Three-wire Digital Serial Interface
鈥?鈥淎uto-boot鈥?Mode from Serial E
2
PROM.
鈥?Power Supply Configurations:
VA+ = +5 V; AGND = 0 V; VD+ = +3.3 V to +5 V
VA+
RESET
The CS5461A is optimized to interface to shunt
resistors or current transformers for current mea-
surement, and to resistive dividers or potential
transformers for voltage measurement.
The CS5461A features a bi-directional serial in-
terface for communication with a processor, and
a programmable energy-to-pulse output func-
tion. Additional features include on-chip
functionality to facilitate system-level calibration,
temperature sensor, voltage sag detection, and
phase compensation.
ORDERING INFORMATION:
See
Page 41.
VD+
IIN+
IIN-
PGA
4th Order
鈭單?/div>
Modulator
Digital
Filter
HPF
Option
MODE
CS
Power
Calculation
Engine
SDI
Serial
Interface
SDO
SCLK
INT
VREFIN
x1
Temperature
Sensor
VIN+
VIN-
x10
2nd Order
鈭單?/div>
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
http://www.cirrus.com
Copyright
漏
Cirrus Logic, Inc. 2005
(All Rights Reserved)
AUG 鈥?5
DS661F1

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