CS5451A

更新时间： 2024-11-13 22:40:19

品牌	Logo	应用领域
凌云 - CIRRUS		转换器模数转换器
页数	文件大小	规格书
14页	189K
描述
SIX CHANNEL DELTA SIGMA ANALOG TO DIGITAL CONVERTER

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CS5451A 数据手册

CS5451A

Six-Channel Delta-Sigma Analog-to-Digital Converter

Features

Description

The CS5451A is a highly integrated Delta-Sigma (∆Σ)

Analog-to-Digital Converter (ADC) developed for the

Power Measurement Industry. The CS5451A combines

six ∆Σ ADCs, decimation filters, and a serial interface on

a single chip. The CS5451A interfaces directly to a cur-

rent transformer or shunt to measure current, and

resistive divider or transformer to measure voltage. The

product features a serial interface for communication

with a micro-controller or DSP. The product is initialized

and fully functional upon reset, and includes a Voltage

Reference.

Synchronous Sampling

On-chip 1. 2V Reference (25ppm/°C typ)

Power Supply Configurations:

– VA+ = +3 V; VA- = -2 V; VD+ = +3 V

– Supply tolerances 10%

Power Consumption

– 20 mW Typical at VD+ = +3 V

Simple Four-wire Serial Interface

Charge Pump Driver output generates

negative power supply.

Ground-Referenced Bipolar Inputs

ORDERING INFORMATION:

CS5451A-IS -40°C to +85°C

28-pin SSOP

VA+

RESET

VD+

GAIN

IIN1+

IIN1-

x1, 20

4th Order ∆Σ Modulator

Decimation Filter

VIN1+

VIN1-

4th Order ∆Σ Modulator

x1, 20

IIN2+

IIN2-

VIN2+

VIN2-

OWRS

SDO

4th Order ∆Σ Modulator

Serial

Interface

FSO

x1, 20

IIN3+

IIN3-

SCLK

CPD

VIN3+

VIN3-

4th Order ∆Σ Modulator

VREFIN

Voltage

Reference

VREFOUT

Pulse Output

Regulator

Clock

XIN

AGND

VA-

DGND

This document contains information for a new product.

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

Preliminary Product Information

OCT ‘03

http://www.cirrus.com

DS635PP1

12 3 4 5 6 7...14

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