CS5330A_06 Datasheet, PDF (1/16 Pages) Cirrus Logic – 8-Pin, Stereo A/D Converter for Digital Audio

CS5330A/31A
8-Pin, Stereo A/D Converter for Digital Audio
Features
 Single +5 V Power Supply
 18-Bit Resolution
 94 dB Dynamic Range
 Linear Phase Digital Anti-Alias Filtering
– 0.05dB Passband Ripple
– 80dB Stopband Rejection
 Low Power Dissipation: 150 mW
– Power-Down Mode for Portable
Applications
 Complete CMOS Stereo A/D System
– Delta-Sigma A/D Converters
– Digital Anti-Alias Filtering
– S/H Circuitry and Voltage Reference
 Adjustable System Sampling Rates including
32kHz, 44.1 kHz & 48kHz
General Description
The CS5330A/31A is a complete stereo analog-to-digi-
tal converter that performs anti-alias filtering, sampling
and analog-to-digital conversion generating 18-bit val-
ues for both left and right inputs in serial form. The
output sample rate can be infinitely adjusted between
2 kHz and 50 kHz.
The CS5330A/31A operates from a single +5 V supply
and requires only 150 mW for normal operation, making
it ideal for battery-powered applications.
The ADC uses delta-sigma modulation with 128X over-
sampling, followed by digital filtering and decimation,
which removes the need for an external anti-alias filter.
The linear-phase digital filter has a passband to
21.7 kHz, 0.05 dB passband ripple and >80 dB stop-
band rejection. The device also contains a high-pass fil-
ter to remove DC offsets.
The device is available in an 8-pin SOIC package in
both Commerical (-10° to +70° C) and Automotive grades
(- 40° to +85° C). Please refer to “Ordering Information”
on page 16 for complete details.
Voltage Reference
8
AINL
S/H
AINR ⁵
S/H
AGND ⁶
7
VA+
LP Filter
DAC
Comparator
LP Filter
DAC
Comparator
MCLK
4
SCLK
2
LRCK
3
Serial Output Interface
1
SDATA
Digital Decimation
Filter
High
Pass
Filter
Digital Decimation
Filter
High
Pass
Filter
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
APRIL '06
DS138F5