CS5334 Datasheet, PDF (1/20 Pages) Cirrus Logic – 20-Bit, Stereo A/D Converter for Digital Audio

CS5334 CS5335
20-Bit, Stereo A/D Converter for Digital Audio
Features
• CS5334
Dynamic Range: 100 dB
THD+N: -90 dB
• CS5335
Dynamic Range: 105 dB
THD+N: -95 dB
• ^{128X Oversampling}
• ^{Fully Differential Inputs}
• ^{Linear Phase Digital Anti-Alias Filtering}
21.7 kHz passband (fs = 48kHz)
85 dB stop band attenuation
0.0025 dB pass band ripple
• ^{High Pass Filter - DC offset removal}
• ^{Peak Signal Level Detector}
High Resolution and Bar Graph Modes
General Description
The CS5334 and CS5335 are 2-channel, single +5V
supply, pin compatable analog-to-digital converters for
digital audio systems. The CS5334 and CS5335 perform
sampling, analog-to-digital conversion and anti-alias fil-
tering, generating 20-bit values for both left and right
inputs in serial form. The output word rate can be up to
50 kHz per channel.
The CS5334 and CS5335 use 4th-order, delta-sigma
modulation with 128X oversampling followed by digital
filtering and decimation, which removes the need for an
external anti-alias filter. These ADCs use a differential
architecture which provides excellent noise rejection.
The CS5334 and CS5335 have a filter passband to
21.7kHz. The filter has linear phase, 0.0025 dB pass-
band ripple, and >85 dB stopband rejection. An on-chip
high pass filter is also included to remove DC offsets.
ORDERING INFORMATION:
Model
Temp. Range Package Type
CS5334-KS -10° to 70°C 20-pin Plastic SSOP
CS5335-KS -10° to 70°C 20-pin Plastic SSOP
VA+
3
VD+
6
RST
18
MCLK
7
OVFL
2
FRAME SCLK LRCK
10
8 12
CMOUT
15
Voltage Reference
AINL-
16
AINL+
17
S/H
LP Filter
DAC
Comparator
Serial Output Interface
SDATA
9
DIF0
20
19 ^DIF1
Digital Decimation
Filter
High Pass
Filter
AINR- ₁₄
AINR+
13
S/H
LP Filter
DAC
4
AGND
Comparator
Digital Decimation
Filter
High Pass
Filter
5
DGND
11
1
PU
HP DEFEAT
Preliminary Product Information
This document contains information for a new product. Crystal
Semiconductor reserves the right to modify this product without notice.
Crystal Semiconductor Corporation
P.O. Box 17847, Austin, TX 78760
[phone] FAX: [phone]
http://www.crystal.com
Copyright © Crystal Semiconductor Corporation 1996
(All Rights Reserved)
NOV ’96
DS237PP2
1