|
CS5451A Datasheet, PDF (1/14 Pages) Cirrus Logic – SIX CHANNEL DELTA SIGMA ANALOG TO DIGITAL CONVERTER | |||
|
CS5451A
Six-Channel Delta-Sigma Analog-to-Digital Converter
Features
Synchronous Sampling
On-chip 1. 2V Reference (25ppm/°C typ)
Power Supply Configurations:
â VA+ = +3 V; VA- = -2 V; VD+ = +3 V
â Supply tolerances ±10%
Power Consumption
â 20 mW Typical at VD+ = +3 V
Simple Four-wire Serial Interface
Charge Pump Driver output generates
negative power supply.
Ground-Referenced Bipolar Inputs
Description
The CS5451A is a highly integrated Delta-Sigma (âΣ)
Analog-to-Digital Converter (ADC) developed for the
Power Measurement Industry. The CS5451A combines
six âΣ 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.
ORDERING INFORMATION:
CS5451A-IS -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
x1, 20
4th Order âΣ Modulator
Decimation Filter
x1
4th Order âΣ Modulator
Decimation Filter
VD+
x1, 20
4th Order âΣ Modulator
x1
4th Order âΣ Modulator
x1, 20
4th Order âΣ Modulator
x1
4th 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.
http://www.cirrus.com
Copyright  Cirrus Logic, Inc. 2003
(All Rights Reserved)
OCT â03
DS635PP1
1
|
▷ |