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CS5451 Datasheet, PDF (1/14 Pages) List of Unclassifed Manufacturers – SIX CHANNEL DELTA SIGMA ANALOG TO DIGITAL CONVERTER | |||
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CS5451
Six-Channel Delta-Sigma Analog-to-Digital Converter
Features
l Synchronous Sampling
l On-chip 1.2 V Reference (25 ppm/°C typ)
l Power Supply Configurations:
â VA+ = +3 V; VA- = -2 V; VD+ = +3 V
â Supply tolerances ±10%
l Power Consumption
â 20 mW Typical at VD+ = +3 V
l Simple Four-wire Serial Interface
l Charge Pump Driver output generates
negative power supply.
l Ground-Referenced Bipolar Inputs
Description
The CS5451 is a highly integrated Delta-Sigma (âΣ) An-
alog-to-Digital Converter (ADC) developed for the Power
Measurement Industry. The CS5451 combines six âΣ
ADCs, decimation filters, and a serial interface on a sin-
gle chip. The CS5451 interfaces directly to a current
transformer or shunt to measure current, and resistive
divider or transformer to measure voltage. The product
features a serial interface for communication with a mi-
cro-controller or DSP. The product is initialized and fully
functional upon reset, and includes a Voltage Reference.
ORDERING INFORMATION:
CS5451-BS -40°C to +85°C
28-pin SSOP
GAIN
IIN1+
IIN1-
VIN1+
VIN1-
IIN2+
IIN2-
VIN2+
VIN2-
IIN3+
IIN3-
VIN3+
VIN3-
VREFIN
VREFOUT
VA+
RESET
VD+
x1, 20
4th Order âΣ Modulator
Decimation Filter
x1
2nd Order âΣ Modulator
Decimation Filter
x1, 20
4th Order âΣ Modulator
x1
2nd Order âΣ Modulator
x1, 20
4th Order âΣ Modulator
x1
2nd Order âΣ Modulator
x1
Voltage
Reference
Decimation Filter
Decimation Filter
Decimation Filter
Decimation Filter
Serial
Interface
SE
OWRS
SDO
FSO
SCLK
CLOCK
Pulse Output
Regulator
CPD
AGND
VA-
XIN
DGND
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
Copyright  Cirrus Logic, Inc. 2000
(All Rights Reserved)
JUL â01
DS458PP4
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