CS4340
24-Bit, 96 kHz Stereo DAC for Audio
Features
l
Complete Stereo DAC System: Interpolation,
Description
The CS4340 is a complete stereo digital-to-analog sys-
tem including digital interpolation, fourth-order delta-
sigma digital-to-analog conversion, digital de-emphasis
and switched capacitor analog filtering. The advantages
of this architecture include: ideal differential linearity, no
distortion mechanisms due to resistor matching errors,
no linearity drift over time and temperature and a high
tolerance to clock jitter.
The CS4340 accepts data at audio sample rates from
2 kHz to 100 kHz, consumes very little power, and oper-
ates over a wide power supply range. The features of the
CS4340 are ideal for DVD players, CD players, set-top
box and automotive systems.
D/A, Output Analog Filtering
l
101 dB Dynamic Range
l
91 dB THD+N
l
Low Clock Jitter Sensitivity
l
+3 V to +5 V Power Supply
l
Filtered Line Level Outputs
l
On-Chip Digital De-emphasis for 32, 44.1,
and 48 kHz
l
30 mW with 3 V supply
l
Popguard
®
Technology for Control of Clicks
and Pops
ORDERING INFORMATION
CS4340-KS
16-pin SOIC, -10 to 70 °C
CS4340-BS
16-pin SOIC, -40 to 85 °C
CDB4340
Evaluation Board
I
SCLK/DEM1
RST
DEM0
MUTEC
External
Mute Control
∆Σ
DAC
Analog Filter
AOUTL
De-emphasis
Interpolation
Filter
Interpolation
Filter
LRCK
SDATA
Serial
Input
Interface
∆Σ
DAC
Analog Filter
AOUTR
DIF0 DIF1
MCLK
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
©
Cirrus Logic, Inc. 2000
(All Rights Reserved)
NOV ‘00
DS297PP3
1
CS4340
TABLE OF CONTENT
1. CHARACTERISTICS AND SPECIFICATIONS .............................................. 5
ANALOG CHARACTERISTICS................................................................... 5
ANALOG CHARACTERISTICS................................................................... 6
ANALOG CHARACTERISTICS................................................................... 7
POWER AND THERMAL CHARACTERISTICS ......................................... 8
DIGITAL CHARACTERISTICS.................................................................... 8
RECOMMENDED OPERATING CONDITIONS .......................................... 9
SWITCHING CHARACTERISTICS ........................................................... 10
2. TYPICAL CONNECTION DIAGRAM ............................................................ 12
3. PIN DESCRIPTION ....................................................................................... 13
4. APPLICATIONS ............................................................................................ 16
4.1 Grounding and Power Supply Decoupling ......................................... 16
4.2 Oversampling Modes ......................................................................... 16
4.3 Recommended Power-up Sequence ................................................. 16
4.4 Popguard
®
Transient Control ............................................................ 16
5. INTERPOLATION FILTER RESPONSE PLOTS
.............................. 17
6. DIGITAL INTERFACE FORMATS
............................................. 19
7. ANALOG PERFORMANCE PLOTS ............................................................. 21
8. PARAMETER DEFINITIONS ........................................................................ 26
Total Harmonic Distortion + Noise (THD+N) ............................................. 26
Dynamic Range ......................................................................................... 26
Interchannel Isolation................................................................................. 26
Interchannel Gain Mismatch ...................................................................... 26
Gain Error .................................................................................................. 26
Gain Drift.................................................................................................... 26
9. REFERENCES .............................................................................................. 26
10. PACKAGE DIMENSIONS ........................................................................... 27
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts/
Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-
mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information
contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of
any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights
of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of
this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or
otherwise) without the prior written consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no
part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical,
photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for manufacture
or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing
in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trade-
marks and service marks can be found at http://www.cirrus.com.
2
DS297PP3
CS4340
LIST OF FIGURES
Figure 1. External Serial Mode Input Timing ............................................................. 11
Figure 2. Internal Serial Mode Input Timing .............................................................. 11
Figure 3. Internal Serial Clock Generation ................................................................ 11
Figure 4. Typical Connection Diagram ...................................................................... 12
Figure 5. Base-Rate Stopband Rejection .................................................................. 17
Figure 6. Base-Rate Transition Band ........................................................................ 17
Figure 7. Base-Rate Transition Band (Detail)............................................................ 17
Figure 8. Base-Rate Passband Ripple ...................................................................... 17
Figure 9. High-Rate Stopband Rejection ................................................................... 17
Figure 10. High-Rate Transition Band ....................................................................... 17
Figure 11. High-Rate Transition Band (Detail) .......................................................... 18
Figure 12. High-Rate Passband Ripple ..................................................................... 18
Figure 13. Output Test Load...................................................................................... 18
Figure 14. Maximum Loading .................................................................................... 18
Figure 15. Power vs. Sample Rate (VA = 5V) ........................................................... 18
Figure 16. CS4340 Format 0 (I
2
S)............................................................................. 19
Figure 17. CS4340 Format 1 ..................................................................................... 19
Figure 18. CS4340 Format 2 ..................................................................................... 20
Figure 19. CS4340 Format 3 ..................................................................................... 20
Figure 20. De-Emphasis Curve ................................................................................. 21
Figure 21. FFT 0 dB input, BRM, VA = 3V ................................................................ 22
Figure 22. FFT -60 dB input, BRM, VA = 3V ............................................................. 22
Figure 23. FFT Idle Noise, BRM, VA = 3V................................................................. 22
Figure 24. Fade-to-Noise Linearity, BRM, VA = 3V................................................... 22
Figure 25. THDN vs Ampl, BRM, VA = 3V ................................................................ 22
Figure 26. THDN vs Freq, BRM, VA = 3V ................................................................. 22
Figure 27. FFT 0 dB input, BRM, VA = 5V ................................................................ 23
Figure 28. FFT -60 dB input, BRM, VA = 5V ............................................................. 23
Figure 29. FFT Idle Noise, BRM, VA = 5V................................................................. 23
Figure 30. Fade-to-Noise Linearity, BRM, VA = 5V................................................... 23
Figure 31. THDN vs Ampl, BRM, VA = 5V ................................................................ 23
Figure 32. THDN vs Freq, BRM, VA = 5V ................................................................. 23
Figure 33. FFT 0 dB input, HRM, VA = 3V ................................................................ 24
Figure 34. FFT -60 dB input, HRM, VA = 3V ............................................................. 24
Figure 35. FFT Idle Noise, HRM, VA = 3V ................................................................ 24
Figure 36. Fade-to-Noise Linearity, HRM, VA = 3V................................................... 24
Figure 37. THDN vs Ampl, HRM, VA = 3V ................................................................ 24
Figure 38. THDN vs Freq, HRM, VA = 3V ................................................................. 24
Figure 39. FFT 0 dB input, HRM, VA = 5V ................................................................ 25
Figure 40. FFT -60 dB input, HRM, VA = 5V ............................................................. 25
Figure 41. FFT Idle Noise, HRM, VA = 5V ................................................................ 25
Figure 42. Fade-to-Noise Linearity, HRM, VA = 5V................................................... 25
Figure 43. THDN vs Ampl, HRM, VA = 5V ................................................................ 25
Figure 44. THDN vs Freq, HRM, VA = 5V ................................................................. 25
DS297PP3
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CS4340
LIST OF TABLES
Table 1. Internal Serial Clock Mode .......................................................................... 14
Table 2. External Serial Clock Mode ......................................................................... 14
Table 3. Common Master Clock Frequencies ........................................................... 14
Table 4. Digital Interface Format - DIF1 and DIF0 ................................................... 15
4
DS297PP3
CS4340
1.
CHARACTERISTICS AND SPECIFICATIONS
ANALOG CHARACTERISTICS
(Test conditions (unless otherwise specified): T
A
= 25 °C; Logic "1" =
VA = 5 V; Logic "0" = AGND;Full-Scale Output Sine Wave, 997 Hz; MCLK = 12.288 MHz; Fs for Base-rate Mode =
48 kHz, SCLK = 3.072 MHz, Measurement Bandwidth 10 Hz to 20 kHz, unless otherwise specified; Fs for High-
Rate Mode = 96 kHz, SCLK = 6.144 MHz, Measurement Bandwidth 10 Hz to 40 kHz, unless otherwise specified.
Test load R
L
= 10 kΩ, C
L
= 10 pF (see Figure 13)
Base-rate Mode
Parameter
Symbol
Min
-10
93
96
-
-
-
-
-
-
-
-
-
-10
89
92
-
-
-
-
-
-
-
-
-
Typ
-
98
101
95
97
-91
-78
-38
-90
-75
-35
102
-
94
97
93
96
-94
-74
-34
-93
-73
-33
102
Max
70
-
-
-
-
-86
-
-
-
-
-
-
70
-
-
-
-
-88
-
-
-
-
-
-
High-Rate Mode
Min
-10
91
95
-
-
-
-
-
-
-
-
-
-10
87
91
-
-
-
-
-
-
-
-
-
Typ
-
96
100
94
97
-89
-76
-36
-89
-74
-34
102
-
92
96
92
96
-92
-72
-32
-91
-72
-32
102
Max
70
-
-
-
-
-84
-
-
-
-
-
-
70
-
-
-
-
-87
-
-
-
-
-
-
Unit
°C
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
°C
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
CS4340-KS Dynamic Performance for VA = 5 V (Note 1)
Specified Temperature Range
T
A
Dynamic Range
(Note 2)
18 to 24-Bit
unweighted
A-Weighted
16-Bit unweighted
A-Weighted
Total Harmonic Distortion + Noise
(Note 2) THD+N
18 to 24-Bit 0 dB
-20 dB
-60 dB
16-Bit
0 dB
-20 dB
-60 dB
Interchannel Isolation
(1 kHz)
CS4340-KS Dynamic Performance for VA = 3 V (Note 1)
Specified Temperature Range
T
A
Dynamic Range
(Note 2)
18 to 24-Bit
unweighted
A-Weighted
16-Bit unweighted
A-Weighted
Total Harmonic Distortion + Noise
(Note 2) THD+N
18 to 24-Bit 0 dB
-20 dB
-60 dB
16-Bit
0 dB
-20 dB
-60 dB
Interchannel Isolation
(1 kHz)
Notes: 1. CS4340-KS parts are tested at 25 °C and Min/Max performance numbers are guaranteed across the
specified temperature range, T
A
.
2. One-half LSB of triangular PDF dither is added to data.
DS297PP3
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