CS5371 Datasheet, PDF (1/22 Pages) Cirrus Logic – LOW POWER HIGH PERFORMANCE MODULATORS

CS5371/CS5372
Low-Power High-Performance ∆Σ Modulators
Features
Description
l Fourth-Order ∆Σ Architecture
l Clock Jitter Tolerant Architecture
l Input Voltage Range 5 V_p-p (2.5 V_diff)
l High Dynamic Range (SNR)
s 124 dB @ 411 Hz Bandwidth
s 121 dB @ 822 Hz Bandwidth
l Low Total Harmonic Distortion (THD)
s -118 dB Typical, -112 dB Maximum
l Low Power Consumption
s Normal Mode: 25 mW per Channel
s Low Power Mode: 15 mW per Channel
l Small Footprint 24 Pin SSOP Package
l Single or Multi-Channel System Support
s 1 Channel System; CS5371
s 2 Channel System; CS5372
s 3 Channel System; CS5371 + CS5372
s 4 Channel System; CS5372 + CS5372
l Single or Dual Power Supply Configurations
s VA+ = +5 V; VA- = 0 V; VD = +3 V to +5 V
s VA+ = +2.5 V; VA- = -2.5 V; VD = +3 V to +5 V
s VA+ = +3 V; VA- = -3 V; VD = +3 V
The CS5371 and CS5372 are one and two channel high
dynamic range, fourth-order ∆−Σ modulators intended
for geophysical and sonar applications. Used in combi-
nation with the CS5376 digital filter, a unique high
resolution A/D measurement system results.
The CS5371 and CS5372 provide higher dynamic range
and lower total harmonic distortion than our industry
standard CS5321 modulator, while consuming signifi-
cantly less power per channel. The modulators generate
an oversampled serial bit stream at 512 kbits per second
when operated from a clock frequency of 2.048 MHz.
The CS5371 and CS5372 are available in a small 24-pin
SSOP package, providing exceptional performance in a
very small footprint.
In normal mode (LPWR = 0, MCLK = 2.048 MHz), power
consumption is 25 mW per channel, and in low power
mode (LPWR = 1, MCLK = 1.024MHz), power consump-
tion is 15 mW per channel. Each modulator can be
independently powered down to 1 mW per channel, and
by halting the input clock the modulators enter a mi-
cropower state using only 10 µW per channel.
ORDERING INFORMATION
CS5371 - BS -40 ^oC to +85 ^oC
CS5372 - BS -40 ^oC to +85 ^oC
24-pin SSOP
24-pin SSOP
W6
QX9I
W9
W6
QX9I
W9
DIA
DIS
DIS
DIA
7+
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CS5371
W6
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DIA 
DIS 
DIS 
DIA 
WS@A
WS@A
DIA!
DIS!
DIS!
DIA!
7+
# ÃPS9@S
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HAG6B
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7+
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8GP8F
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CS5372
W6
QX9I!
PATU GQXS
9BI9
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
[phone] FAX: [phone]
http://www.cirrus.com
Copyright  Cirrus Logic, Inc. 2001
(All Rights Reserved)
APR ‘01
DS255PP2
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