CS5461 Datasheet, PDF(1/46 Page) Cirrus Logic – Single Phase Bi-Directional Power/Energy IC

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CS5461 Datasheet, PDF (1/46 Pages) Cirrus Logic – Single Phase Bi-Directional Power/Energy IC

CS5461

Single Phase Bi-Directional Power/Energy IC

Features

Description

z Energy Data Linearity: Â±0.1% of Reading

over 1000:1 Dynamic Range

z On-Chip Functions: Energy, I â V,

IRMS and VRMS, Energy-to-Pulse Conversion

z AC/DC System Calibrations

z Meets Accuracy Spec for IEC 687/1036, JIS

z Power Consumption <12 mW

z On-Chip Temperature Sensor

z Voltage Sag Detect

z Adjustable Input Range on Current Channel

z Phase Compensation

z GND-Referenced Signals with Single Supply

z On-chip 2.5 V Reference (25 ppm/Â°C typ)

z Simple Three-Wire Digital Serial Interface

z Power Supply Monitor

z Interface Optimized for Shunt Sensor

z Mechanical Counter/Stepper Motor Drive

z Smart âAuto-Bootâ Mode from Serial

EEPROM with no microcontroller.

z Power Supply Configurations

VA+ = +5 V; VA- = 0 V; VD+ = +3.3 V to +5 V

The CS5461 is an integrated power measure-

ment device which combines two âÎ£ ADCs, high

speed power calculation functions, and a serial

interface on a single chip. It is designed to accu-

rately measure Instantaneous Current and

Voltage, and calculate: Instantaneous Power,

Average Power, IRMS, and VRMS, for sin-

gle-phase 2- or 3-wire power metering

applications. The CS5461 can interface to a

low-cost shunt resistor or transformer for current

measurement, and to a resistive divider or poten-

tial transformer for voltage measurement. The

CS5461 features a bi-directional serial interface

for communication with a micro-controller and a

programmable energy-to-pulse output function.

CS5461 has on-chip functionality to facilitate AC

or DC system-level calibration. Additional fea-

tures include on-chip temperature sensor,

voltage sag detection, and phase compensation.

ORDERING INFORMATION:

CS5461-IS -40Â°C to +85Â°C

24-pin SSOP

IIN+

IIN-

VIN+

VIN-

VREFIN

VREFOUT

VA+

PGA

x10,x50

4th Order âÎ£

Modulator

RESET

Digital

Filter

High Pass

Filter

x10

2nd Order âÎ£

Modulator

Digital

Filter

Temperature

Sensor

Voltage

Reference

Power

Monitor

System

Clock

Power

Calculation

Engine

High Pass

Filter

Clock

Generator

VD+

Serial

Interface

E-to-F

Calibration

MODE

SDI

SDO

SCLK

INT

EOUT

EDIR

FOUT

VA-

PFMON

XIN XOUT CPUCLK

DGND

Preliminary Product Information

This document contains information for a new product.

Cirrus Logic reserves the right to modify this product without notice.

http://www.cirrus.com

Jan 04

DS546PP2

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