CS5396
CS5397
120 dB, 96 kHz Audio A/D Converter
Features
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24-Bit
General Description
The CS5396 and CS5397 are complete analog-to-digital
converters for stereo digital audio systems. They per-
form sampling, analog-to-digital conversion and anti-
alias filtering, generating 24-bit values for both left and
right inputs in serial form at sample rates up to 100 kHz
per channel.
The CS5396/97 use a patented 7th-order, tri-level delta-
sigma modulator followed by digital filtering and decima-
tion, which removes the need for an external anti-alias
filter. The ADCs use a differential architecture which pro-
vides excellent noise rejection.
The CS5396 has a linear phase filter optimized for audio
applications with ±0.005 dB passband ripple and
>117 dB stopband rejection. The CS5397 has a non-
aliasing filter response with ±0.005 passband ripple and
>117 dB stopband attenuation. Other features available
in both the CS5396 and CS5397 are an optional low
group delay filter and a unique psychoacoustic noise
shaping filter which subjectively truncates the output to
16, 18 or 20 bits while 24-bit sound quality is preserved.
The CS5396/97 are targeted for the highest perfor-
mance professional audio systems requiring wide
dynamic range, negligible distortion and low noise.
ORDERING INFORMATION
CS5396-KS -10° to 50° C
CS5397-KS -10° to 50° C
CDB5396/97
VCOM
MCLKA
ADCTL
DACTL CAL SCLK LRCK SDATA1 SDATA2
MCLKD
Conversion
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120 dB Dynamic Range (A-Weighted)
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Low Noise and Distortion
>105 dB THD + N
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Complete CMOS Stereo A/D System
Delta-Sigma A/D Converters
Digital Anti-Alias Filtering
S/H Circuitry and Voltage Reference
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CS5396 - digital filter optimized for audio
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CS5397 - non-aliasing digital filter
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Adjustable System Sampling Rates
including 32, 44.1, 48 & 96 kHz
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Differential Analog Architecture
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Linear Phase Digital Anti-Alias Filtering
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10 Tap Programmable Psychoacoustic Noise
Shaping Filter
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Single +5 V Power Supply
28-pin SOIC
28-pin SOIC
Evaluation Board
VREF
Voltage Reference
Serial Output Interface
Serial
Control
Port
CS
CDIN
CCLK
AINL-
AINL+
S/H
+
-
LP Filter
+
-
DAC
AINR-
AINR+
S/H
DAC
Comparator
Digital Decimation
Filter
(with Low Group
Delay Options)
Digital Decimation
Filter
(with Low Group
Delay Options)
Calibration
Microcontroller
Psychoacoustic
Filter
+
-
LP Filter
+
-
Comparator
Calibration
SRAM
VA
AGND1
AGND2 AGND0 VL LGND
TST0
TST1
VD
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. 1997
(All Rights Reserved)
SEP ‘97
DS229PP2
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CIRRUS [ CIRRUS LOGIC ]
