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CDB5394 Datasheet(Hoja de datos) 1 Page - Cirrus Logic

No. de Pieza. CDB5394
Descripción  117 DB 48KHZ AUDIO A/D CONVERTER
Descarga  22 Pages
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Fabricante  CIRRUS [Cirrus Logic]
Página de inicio  http://www.cirrus.com
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 1 page
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Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
1
Copyright
© Cirrus Logic, Inc. 1998
(All Rights Reserved)
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
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
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
28-pin SOIC
CDB5394
Evaluation Board
I
Voltage Reference
Serial Output Interface
Digital
Filter
High
Pass
Filter
High
Pass
Filter
Decimation
Digital
Filter
Decimation
LP Filter
DAC
-
+
-
+
S/H
LP Filter
DAC
-
+
-
+
S/H
AINR+
VA
SCLK
SDATA MCLKD
PDN
14
16
20
19
24
27
VCOM
2
MCLKA
7
LRCK
13
ADCTL
6
LGND
22
TSTO1
8
AINR-
26
Comparator
Comparator
AINL+ 4
AINL- 5
VREF
1
DFS
18
S/M
17
AGND
3
AGND
25
AGND
28
23
VL
TSTO2
21
VD
11
DGND
12
Calibration
Microcontroller
CAL
10
DACTL
9
DGND
15
MAY ‘98
DS258PP4




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