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
for complete details.
MCLK
4
Voltage Reference
SCLK
2
LRCK
3
1
SDATA
Serial Output Interface
8
LP Filter
S/H
DAC
Digital Decimation
Filter
Comparator
DAC
7
VA+
High
Pass
Filter
Digital Decimation
Filter
Comparator
AINL
High
Pass
Filter
AINR
5
S/H
LP Filter
AGND
6
Copyright
©
Cirrus Logic, Inc. 2006
(All Rights Reserved)
APRIL '06
DS138F5
CIRRUS [ CIRRUS LOGIC ]
