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Cirrus Logic

CS5330A Datasheet Preview

CS5330A Datasheet

Stereo A/D Converter

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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
– 0.05 dB Passband Ripple
– 80 dB 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
32, 44.1, and 48 kHz
General Description
The CS5330A/31A is a complete stereo analog-to-digi-
tal converter that performs antialias 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 Commercial (-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
AGND 6
S/H
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. 2011
(All Rights Reserved)
MAY '11
DS138F6




Cirrus Logic

CS5330A Datasheet Preview

CS5330A Datasheet

Stereo A/D Converter

No Preview Available !

CS5330A/31A
TABLE OF CONTENTS
1. PIN DESCRIPTIONS ................................................................................................................ 3
2. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 4
SPECIFIED OPERATING CONDITIONS ................................................................................. 4
ABSOLUTE MAXIMUM RATINGS ........................................................................................... 4
ANALOG INPUT CHARACTERISTICS .................................................................................... 5
DIGITAL CHARACTERISTICS................................................................................................. 6
DIGITAL FILTER CHARACTERISTICS ................................................................................... 6
SWITCHING CHARACTERISTICS .......................................................................................... 7
3. GENERAL DESCRIPTION ....................................................................................................... 9
3.1 System Design .................................................................................................................. 9
3.1.1 Master Clock ......................................................................................................... 9
3.1.2 Serial Data Interface ............................................................................................ 9
3.1.3 Master Mode ......................................................................................................... 9
3.1.4 Slave Mode ......................................................................................................... 10
3.1.5 CS5330A ............................................................................................................. 10
3.1.6 CS5331A ............................................................................................................. 10
3.1.7 Analog Connections ............................................................................................ 11
3.1.8 High-Pass Filter .................................................................................................. 11
3.1.9 Initialization and Power-Down ............................................................................. 11
3.1.10 Grounding and Power Supply Decoupling ........................................................ 12
3.1.11 Digital Filter ....................................................................................................... 13
4. PARAMETER DEFINITIONS .................................................................................................. 14
5. REFERENCES ........................................................................................................................ 15
6. PACKAGE DESCRIPTIONS .................................................................................................. 15
7. ORDERING INFORMATION ................................................................................................. 16
8. REVISION HISTORY .............................................................................................................. 16
LIST OF FIGURES
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Typical Connection Diagram......................................................................................... 8
Data Output Timing-CS5330A .................................................................................... 10
Data Output Timing - CS5331A (I²S Compatible) ....................................................... 10
CS5330A/31A Initialization and Power-Down Sequence............................................ 12
CS5330A/31A Digital Filter Stopband Rejection......................................................... 13
CS5330A/31A Digital Filter Transition Band ............................................................... 13
CS5330A/31A Digital Filter Passband Ripple ............................................................. 13
CS5330A/31A Digital Filter Transition Band ............................................................... 13
LIST OF TABLES
Table 1. Common Clock Frequencies......................................................................................... 9
2 DS138F6


Part Number CS5330A
Description Stereo A/D Converter
Maker Cirrus Logic
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