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Cirrus Logic

CS5394 Datasheet Preview

CS5394 Datasheet

48 kHz Audio A/D Converter

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CS5394
117 dB, 48 kHz Audio A/D Converter
Features
l 24-Bit Conversion
l Complete CMOS Stereo A/D System
Delta-Sigma A/D Converters
Digital Anti-Alias Filtering
S/H Circuitry and Voltage Reference
l Adjustable System Sampling Rates
including 32 kHz, 44.1 kHz and 48 kHz
l 117 dB Dynamic Range (A-Weighted)
l -103 dB THD + N
l Differential Analog Circuitry
l Internal 64× Oversampling
l Linear Phase Digital Anti-Alias Filtering
with >117 dB Stopband Attenuation
l Single +5 V Power Supply
l Power Down Mode
I
Description
The CS5394 is a complete analog-to-digital converter for
stereo digital audio systems. It performs sampling, ana-
log-to-digital conversion and anti-alias filtering,
generating 24-bit values for both left and right inputs in
serial form. The output sample rate can be up to 50 kHz
per channel.
The CS5394 uses 7th-order, delta-sigma modulation
with 64× oversampling followed by digital filtering and
decimation, which removes the need for an external anti-
alias filter. The ADC uses a differential architecture
which provides excellent noise rejection.
The CS5394 has a linear phase filter with passband of dc
to 22.1 kHz, ± 0.005 dB passband ripple and >117 dB
stopband rejection.
The CS5394 is targeted for the highest performance pro-
fessional audio systems requiring wide dynamic range,
negligible distortion and low noise.
ORDERING INFORMATION
CS5394-KS -10° to 70° C
CDB5394
28-pin SOIC
Evaluation Board
VCOM MCLKA ADCTL
27
6
1
VREF
Voltage Reference
AINL- 5
+
AINL+ 4
-
S/H
AINR- 26
AINR+ 27
S/H
+
-
LP Filter
+
-
DAC Comparator
LP Filter
+
-
DAC Comparator
DACTL SCLK LRCK SDATA MCLKD
9 14 13 16 20
Serial Output Interface
Digital
Decimation
Filter
High
Pass
Filter
PDN
19
DFS
18
S/M
17
CAL
10
Digital
Decimation
Filter
Calibration
Microcontroller
High
Pass
Filter
24 3 25 28 23 22 8 21 11 12 15
VA AGND AGND AGND VL LGND TSTO1 TSTO2 VD DGND DGND
Preliminary Product Information
Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright © Cirrus Logic, Inc. 1998
(All Rights Reserved)
MAY ‘98
DS258PP4
1




Cirrus Logic

CS5394 Datasheet Preview

CS5394 Datasheet

48 kHz Audio A/D Converter

No Preview Available !

CS5394
TABLE OF CONTENTS
ANALOG CHARACTERISTICS ........................................................................... 3
POWER AND THERMAL CHARACTERISTICS .................................................. 4
DIGITAL FILTER CHARACTERISTICS ............................................................... 4
DIGITAL CHARACTERISTICS ............................................................................ 4
ABSOLUTE MAXIMUM RATINGS ....................................................................... 5
RECOMMENDED OPERATING CONDITIONS ................................................... 5
SWITCHING CHARACTERISTICS ...................................................................... 6
GENERAL DESCRIPTION .................................................................................. 9
SYSTEM DESIGN ................................................................................................ 9
Master Clock ............................................................................................... 9
SERIAL DATA INTERFACE ................................................................................ 9
Serial Data .................................................................................................. 9
Serial Clock ................................................................................................. 9
Left / Right Clock ...................................................................................... 10
Master Mode ............................................................................................. 10
Slave Mode ............................................................................................... 10
Analog Connections .................................................................................. 10
High Pass Filter ........................................................................................ 11
Power-up and Calibration ......................................................................... 11
Synchronization of Multiple Devices ......................................................... 12
Grounding and Power Supply Decoupling ................................................ 12
PERFORMANCE ............................................................................................... 12
Digital Filter ............................................................................................... 12
PIN DESCRIPTIONS ......................................................................................... 14
PARAMETER DEFINITIONS ............................................................................. 18
REFERENCES ................................................................................................... 19
PACKAGE DIMENSIONS .................................................................................. 20
2 DS258PP4


Part Number CS5394
Description 48 kHz Audio A/D Converter
Maker Cirrus Logic
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CS5394 Datasheet PDF






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