Datasheet > CS5490-ISZR

CS5490-ISZR

更新时间： 2024-11-14 12:24:23

品牌	Logo	应用领域
APEX		/
页数	文件大小	规格书
56页	753K
描述
Two Channel Energy Measurement IC

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CS5490-ISZR 数据手册

CS5490

Two Channel Energy Measurement IC

Features & Description

Description

The CS5490 is a high-accuracy, two-channel, energy measure-

ment analog front end.

•

Superior Analog Performance with Ultra-low Noise Level &

High SNR

Energy Measurement Accuracy of 0.1% over a 4000:1

Dynamic Range

Two Independent 24-bit, 4^th-order, Delta-Sigma

Modulators for Voltage and Current Measurements

The CS5490 incorporates independent 4^thorder Delta-Sigma an-

alog-to-digital converters for both channels, reference circuitry,

and the proven EXL signal processing core to provide active, re-

active, and apparent energy measurement. In addition, RMS and

power factor calculations are available. Calculations are output

via a configurable energy pulse, or direct UART serial access to

on-chip registers. Instantaneous current, voltage, and power

measurements are also available over the serial port. The

two-wire UART minimizes the cost of isolation where required.

Configurable Digital Output for Energy Pulses, Interrupt,

zero-crossing, and Energy Direction

Supports Shunt Resistor, CT, and Rogowski Coil Current

Sensors

On-chip Measurements/Calculations:

- Active, Reactive, and Apparent Power

- RMS Voltage and Current

- Power Factor and Line Frequency

- Instantaneous Voltage, Current, and Power

A configurable digital output provides energy pulses, zero-cross-

ing, energy direction, or interrupt functions. Interrupts can be

generated for a variety of conditions including voltage sag or

swell, overcurrent, and more. On-chip register integrity is assured

via checksum and write protection. The CS5490 is designed to in-

terface to a variety of voltage and current sensors, including shunt

resistors, current transformers, and Rogowski coils.

•

Overcurrent, Voltage Sag, and Voltage Swell Detection

Ultra-fast On-chip Digital Calibration

Configurable No-load Threshold for Anti-creep

Internal Register Protection via Checksum and Write

Protection

On-chip functionality makes digital calibration simple and ultra

fast to minimize the time required at the end of the customer pro-

duction line. Performance across temperature is ensured with an

on-chip voltage reference with low drift. A single 3.3V power sup-

ply is required, and power consumption is low at <13mW. To

minimize space requirements, the CS5490 is offered in a low-cost

16-pin SOIC package.

•

UART Serial Interface

On-chip Temperature Sensor

On-chip Voltage Reference (25ppm/°C Typ.)

Single 3.3 V Power Supply

Ultra-fine Phase Compensation

Low Power Consumption: <13 mW

Power Supply Configurations:

- GNDA = 0 V, VDDA: +3.3 V

ORDERING INFORMATION

See Page 56.

•

Low-cost 16-pin SOIC Package

VDDA

VDDD

RESET

CS5490

IIN+

IIN-

4th Order 

Modulator

Digital

Filter

HPF

Option

PGA

UART

Serial

Interface

VIN+

VIN-

4th Order 

Modulator

Digital

Filter

HPF

Option

10x

Calculation

Configurable

Digital

Output

VREF+

VREF-

Voltage

Reference

Temperature

Sensor

System

Clock

Generator

XIN

XOUT

MODE

GNDA

Cirrus Logic, Inc.

http://www.cirrus.com

JUN’12

DS982F2

12 3 4 5 6 7...56

中文翻译

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