CS4397
24-Bit, Multi-Standard D/A Converter for Digital Audio
Features
24 Bit Conversion
Up to 192 kHz Sample Rates
120 dB Dynamic Range
-100 dB THD+N
Supports PCM, DSD and External
Interpolation filters
Advanced Dynamic-Element Matching
Low Clock Jitter Sensitivity
Digital De-emphasis for 32 kHz, 44.1 kHz and
48 kHz
External Reference Input
Description
The CS4397 is a complete high performance 24-bit
48/96/192 kHz stereo digital-to-analog conversion sys-
tem. The device includes a digital interpolation filter
followed by a oversampled multi-bit delta-sigma modula-
tor which drives dynamic-element-matching (DEM)
selection logic. The output from the DEM block controls
the input to a multi-element switched capacitor DAC/low-
pass filter, with fully-differential outputs. This multi-bit ar-
chitecture features significantly lower out-of-band noise
and jitter sensitivity than traditional 1-bit designs, and the
advanced DEM guarantees low noise and distortion at
all signal levels.
ORDERING INFORMATION
CS4397-KS
-10° to 70° C 28-pin Plastic SOIC
CS4397-KSZ -10° to 70° C 28-pin Plastic SOIC Lead free
CDB4397
Evaluation Board
I
SCLK
LRCK
SDATA
SERIAL INTERFACE
AND FORMAT SELECT
SOFT MUTE
DE-EMPHASIS
FILTER
INTERPOLATION
FILTER
MCLK
CLOCK
DIVIDER
MULTI-BIT
∆Σ
MODULATOR
DYNAMIC
ELEMENT
MATCHING
LOGIC
SWITCHED
CAPACITOR-DAC
AND FILTER
AOUTL+
AOUTL-
INTERPOLATION
FILTER
MULTI-BIT
∆Σ
MODULATOR
DYNAMIC
ELEMENT
MATCHING
LOGIC
SWITCHED
CAPACITOR-DAC
AND FILTER
AOUTR+
AOUTR-
HARDWARE MODE CONTROL
(CONTROL PORT)
VOLTAGE REFERENCE
M4
(AD0/CS)
M3
(AD1/CDIN)
M2
(SCL/CCLK)
M1
M0
(SDA/CDOUT)
RESET
MUTEC
MUTE
FILT+
VREF
FILT-
CMOUT
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Copyright Cirrus Logic, Inc. 2004
(All Rights Reserved)
SEP ‘04
DS333F1
1
©
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