Cirrus Logic CS4340 User Manual
CS4340
24-Bit, 96 kHz Stereo D/A Converter for Audio
Features
! 101 dB Dynamic Range
! -91 dB THD+N
! +3.0 V or +5.0 V Power Supply
! Low Clock Jitter Sensitivity
! Filtered Line-level Outputs
! On-chip Digital De-emphasis for 32, 44.1 and
48 kHz
! 33 mW with 3V Supply
! Popguard
®
Technology for Control of Clicks
and Pops
! Lead-free Packaging Available
Description
The CS4340 is a complete stereo digital-to-analog system
including digital interpolation, fourth-order delta-sigma dig-
I
ital-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
4 kHz to 100 kHz, consumes very little power, and operates over a wide power supply range. The features of the
CS4340 are ideal for DVD players, CD players, set-to p box
and automotive systems.
ORDERING INFORMATION
CS4340-DSZ 16-pin SOIC, Lead Free, -40 to 85 °C
CS4340-KS 16-pin SOIC -10 to 70 °C
CS4340-KSZ 16-pin SOIC, Lead Free, -10 to 70 °C
CS4340-CZZ 16-pin TSSOP, Lead Free, -10 to 70 °C
CDB4340 Evaluation Board
RST
LRCK
SDATA
SCLK/DEM1
Serial
Input
Interface
DIF0
DIF1
DEM0
De-emphasis
Interpolation
Filter
Interpolation
Filter
MCLK
Mute Control
DAC
∆Σ
DAC
∆Σ
MUTEC
External
Analog Filter
Analog Filter
AOUTL
AOUTR
www.cirrus.com
Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved)
JULY '05
DS297F3
1
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ..................................................................................... 4
SPECIFIED OPERATING CONDITIONS.............................................................................................. 4
ABSOLUTE MAXIMUM RATINGS ........................................................................................................4
ANALOG CHARACTERISTICS (CS4340-KS/KSZ/CZZ)....................................................................... 5
ANALOG CHARACTERISTICS (CS4340-DSZ).................................................................................... 7
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE........................................ 8
SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE........................................................ 11
SWITCHING CHARACTERISTICS - INTERNAL SERIAL CLOCK ..................................................... 12
DC ELECTRICAL CHARACTERISTICS.............. ... ... .... ... ... ... .......................................... ... ................ 13
DIGITAL INPUT CHARACTERISTICS ................................................................................................ 13
DIGITAL INTERFACE SPECIFICATIONS........................................................................................... 13
2. PIN DESCRIPTION .............................................................................................................................. 14
3. TYPICAL CONNECTION DIAGRAM ................................................................................................. 15
4. APPLICATIONS ................................................................................................................................... 16
4.1 Sample Rate Range/Operational Mode ........................................................................................ 16
4.2 System Clocking .................... .... ... ... ... ... .... ...................................... .... ... ... ... ................................ 16
4.2.1 Internal Serial Clock Mode ...............................................................................................16
4.2.2 External Serial Clock Mode .............................................................................................. 17
4.3 Digital Interface Format ................................................................................................................. 17
4.4 De-Emphasis ...................................................... .... ... ... ... ....................................... ... ................... 18
4.5 Power-up Sequence .................................................................................................................... 19
4.6 Popguard
4.6.1 Power-up ....................... ... ... ....................................... ... ... ................................................ 19
4.6.2 Power-down ........................................... .... ... ....................................... ... ... ...................... 19
4.6.3 Discharge Time ............................................. ... ... .... ...................................... ... .... ... ......... 19
4.7 Mute Control ....................................................... ....................................... ... .... ... ... ...................... 20
4.8 Grounding and Power Supply Arrangements ............................................................................... 20
®
Transient Control .............................. .... ... ... ... .... ... ... ... ... .... ... ... ... ................................ 19
CS4340
Contacting Cirrus Logic Support
For all product questions and inquiries contact a Cirrus Logic Sales Representative.
To find one nearest you go to www.cirrus.com
IMPORTANT NOTICE
Cirrus Logic, Inc. and it s su bsi di ar i es ( " Ci r ru s" ) bel i eve that the information cont ai ne d in thi s docu ment is acc ura t e and r el iable. However, the inf o rmat io n i s subj ec t
to change without not ice and i s provi ded "AS I S" witho ut warrant y of an y kind ( express o r implie d). Cust omers are a dvised t o obtain the latest version of relevant
information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgment, including those pertaining to warranty, indemnification, and limitation of liability. No responsibility is assumed by Cirrus
for the use of this information, incl uding use of th is inform ation as the basis for ma nufacture or sa le of any item s, or for in fringement of patents or other rights of third
parties. This document is the property of Cirru s and by furnishing this information, Cirrus gran ts no license, express or implied under any patents, mask wo rk r ights,
copyrights, trademarks, trade secrets or other intellectual property rights. Cirrus owns the copyrights associated with the information contained herein and gives consent for copies to be made of the i nformation only for use within your organization wit h respect to Cirrus integrated circuits or other products of Cirrus. This consent
does not extend to other copying such as copying for general distribution, advertising or promotio na l pu rposes, or for creating any work for re s al e.
CERTAIN APPLICATIONS USING SEMI CONDUCTOR P RODUCT S MAY I NVOL VE PO TENT I AL RI SKS OF DEAT H, PE RS ONAL IN JU RY, OR S EV ERE PRO PERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE
IN AIRCRAFT SYSTEMS, MILITARY APPLICATIONS, PRODUCTS SURGICALLY IMPLANTED INTO THE BODY, AUTOMOTIVE SAFETY OR SECURITY DEVICES, LIFE SUPPORT PRODUCTS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD
TO BE FULLY AT THE CUSTOMER’S RISK AND CIRRUS DISCLAIMS AND MAKES NO WARRANTY, EXPRESS, STATUTORY OR IMPLIED, INCLUDING THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, WITH REGARD TO ANY CIRRUS PRODUCT THAT IS USED
IN SUCH A MANNER. IF THE CUSTOMER OR CUSTOMER’S CUSTOMER USES OR PERMITS THE USE OF CIRRUS PRODUCTS IN CRITICAL APPLICATIONS, CUSTOMER AGREES, BY SUCH USE, TO FULLY INDEMNIFY CIRRUS, ITS OFFICERS, DIRECTORS, EMPLOYEES, DISTRIBUTORS AND OTHER
AGENTS FROM ANY AND ALL LIABILITY, INCLUDING ATTORNEYS’ FEES AND COSTS, THAT MAY RESULT FROM OR ARISE IN CONNECTION WITH
THESE USES.
Cirrus Logic, Cirrus, and the Cirrus Logic logo designs are trademarks of Cirrus Logic, Inc. All other brand and product names in this document may be trade marks
or service marks of their respective owners.
2 DS297F3
5. PARAMETER DEFINITIONS ................................................................................................................21
6. REFERENCES ......................................................................................................................................22
7. PACKAGE DIMENSIONS ....................................................................................................................23
7.1 SOIC ................... ....................................... ... ... ....................................... ... ... .................................23
7.2 TSSOP ............................ ... ... .... ...................................... .... ... .......................................................24
8. PACKAGE THERMAL RESISTANCE .................................................................................................25
LIST OF FIGURES
Figure 1. Output Test Load...........................................................................................................................6
Figure 2. Maximum Loading..........................................................................................................................6
Figure 3. Single-Speed Stopband Rejection.................................................................................................9
Figure 4. Single-Speed Transition Band.......................................................................................................9
Figure 5. Single-Speed Transition Band (Detail)...........................................................................................9
Figure 6. Single-Speed Passband Ripple.....................................................................................................9
Figure 7. Double-Speed Stopband Rejection................................................................................................9
Figure 8. Double-Speed Transition Band......................................................................................................9
Figure 9. Double-Speed Transition Band (Detail).......................................................................................10
Figure 10. Double-Speed Passband Ripple................................................................................................10
Figure 11. Serial Input Timing (External SCLK)..........................................................................................11
Figure 12. Internal Serial Mode Input Timing..............................................................................................12
Figure 13. Internal Serial Clock Generation................................................................................................12
Figure 14. Typical Connection Diagram......................................................................................................15
Figure 15. CS4340 Format 0 - I
Figure 16. CS4340 Format 1 - Left Justified up to 24-Bit Data......... ... ... ... ... .... ... ... ....................................17
Figure 17. CS4340 Format 2 - Right Justified, 24-Bit Data............................................................ ... ... ... ....18
Figure 18. CS4340 Format 3 - Right Justified, 16-Bit Data............................................................ ... ... ... ....18
Figure 19. De-Emphasis Curve...................................................................................................................18
CS4340
2
S up to 24-Bit Data ..................................................................................17
LIST OF TABLES
Table 1.CS4340 Speed Modes........ ... .... ... ... ... ... .... ...................................... .... ... ... ... .... ... ... ... ... .................16
Table 2.Single-Speed Mode Standard Frequencies...................................................................................16
Table 3.Double-Speed Mode Standard Frequencies.................................... .... ... ... ... .... ... ... ... ... .... ... ... ... ... .16
Table 4.Internal SCLK/LRCK Ratio.............................................................................................................17
Table 5.Digital Interface Format - DIF1 and DIF0.......................................................................................17
Table 6.De-Emphasis Control.... .................................................................................................................18
DS297F3 3
CS4340
1. CHARACTERISTICS AND SPECIFICATIONS
(Min/Max performance characteristics and specifications are guaranteed over the Specified Operating Conditions.
Typical performance characteristics are derived from measurements taken at T
SPECIFIED OPERATING CONDITIONS (All voltages with respect to AGND = 0 V.)
Parameters Symbol Min Nom Max Units
DC Power Supply
Nominal 3.3V
Nominal 5.0V
Specified Operating Temperature -KS/KSZ/CZZ
(Power Applied) -DSZ
VA
VA
T
T
A
A
ABSOLUTE MAXIMUM RATINGS (AGND = 0 V; all voltages with respect to AGND. Operation
beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these
extremes.)
Parameters Symbol Min Max Units
DC Power Supply VA -0.3 6.0 V
Input Current
Digital Input Voltage V
Ambient Operating Temperature (power applied) T
Storage Temperature T
(Note 1) I
in
IND
A
stg
= 25°C.)
A
2.7
4.75
-10
-40
3.3
5.0
-+70
-±10mA
-0.3 VA+0.4 V
-55 125 °C
-65 150 °C
3.6
5.5
+85
V
V
°C
°C
Notes: 1. Any pin except supplies.
4 DS297F3
CS4340
ANALOG CHARACTERISTICS (CS4340-KS/KSZ/CZZ) (Test conditions (unless otherwise
specified): Input test signal is a 997 Hz sine wave at 0 dBFS; measurement bandwidth is 10 Hz to 20 kHz; test load
=10kΩ, CL = 10 pF (see Figure 1).)
R
L
VA = 5.0 V VA = 3.0 V
Parameter
Single-Speed Mode Fs = 48 kHz
Dynamic Range
18 to 24-Bit unweighted
16-Bit unweighted
Total Harmonic Distortion + Noise
18 to 24-Bit 0 dB
16-Bit 0 dB
Double-Speed Mode Fs = 96 kHz
Dynamic Range
18 to 24-Bit unweighted
16-Bit unweighted
Total Harmonic Distortion + Noise
18 to 24-Bit 0 dB
16-Bit 0 dB
(Note 2)
A-Weighted
A-Weighted
(Note 2)
-20 dB
-60 dB
-20 dB
-60 dB
(Note 2)
A-Weighted
A-Weighted
(Note 2)
-20 dB
-60 dB
-20 dB
-60 dB
Min Typ Max Min Typ Max Unit
93
96
93
96
89
98
101
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
92
95
-91
-78
-38
-90
-72
-32
98
101
92
95
-91
-78
-38
-90
-72
-32
-
-
-
-
-86
-
-
-
-
-
-
-
-
-
-86
-
-
-
-
-
92
-
-
-
-
-
-
-
-
89
92
-
-
-
-
-
-
-
-
94
97
92
95
-94
-74
-34
-91
-72
-32
94
97
92
95
-94
-74
-34
-91
-72
-32
-
-
-
-
-89
-
-
-
-
-
-
-
-
-
-89
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
DS297F3 5
CS4340
ANALOG CHARACTERISTICS (CS4340-KS/KSZ/CZZ) (Continued)
Parameters Symbol Min Typ Max Units
Dynamic Performance for All Modes
Interchannel Isolation (1 kHz) - 102 - dB
DC Accuracy
Interchannel Gain Mismatch - 0.1 - dB
Gain Drift - ±100 - ppm/°C
Analog Output Characteristics and Specifications
Full Scale Output Voltage 0.6•VA 0.7•VA 0.8•VA Vpp
Output Impedance - 100 - Ω
Minimum AC-Load Resistance
Maximum Load Capacitance
Notes: 2. One-half LSB of triangular PDF dither is added to data.
3. Refer to Figure 2.
.
(Note 3) R
(Note 3) C
L
L
-3-kΩ
- 100 - pF
AGND
3.3 µF
AOUTx
+
R
L
Figure 1. Output Test Load
125
100
V
out
C
L
L
75
50
25
Capacitive Load -- C (pF)
2.5
51015
3
Safe Operating
Region
Resistive Load -- R (kΩ)
L
20
Figure 2. Maximum Loading
6 DS297F3
CS4340
ANALOG CHARACTERISTICS (CS4340-DSZ) (Test conditions (unless otherwise specified):
Input test signal is a 997 Hz sine wave at 0 dBFS; measurement bandwidth is 10 Hz to 20 kHz; test load
=10kΩ, CL = 10 pF (see Figure 1).)
R
L
VA = 5.0 V VA = 3.0 V
Parameter
Single-Speed Mode Fs = 48 kHz
Dynamic Range
18 to 24-Bit unweighted
16-Bit unweighted
Total Harmonic Distortion + Noise
18 to 24-Bit 0 dB
16-Bit 0 dB
Double-Speed Mode Fs = 96 kHz
Dynamic Range
18 to 24-Bit unweighted
16-Bit unweighted
Total Harmonic Distortion + Noise
18 to 24-Bit 0 dB
16-Bit 0 dB
(Note 2)
A-Weighted
A-Weighted
(Note 2)
-20 dB
-60 dB
-20 dB
-60 dB
(Note 2)
A-Weighted
A-Weighted
(Note 2)
-20 dB
-60 dB
-20 dB
-60 dB
Min Typ Max Min Typ Max Unit
93
96
93
96
89
98
101
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
92
95
-91
-78
-38
-90
-72
-32
98
101
92
95
-91
-78
-38
-90
-72
-32
-
-
-
-
-86
-
-
-
-
-
-
-
-
-
-86
-
-
-
-
-
92
-
-
-
-
-
-
-
-
89
92
-
-
-
-
-
-
-
-
94
97
92
95
-94
-74
-34
-91
-72
-32
94
97
92
95
-94
-74
-34
-91
-72
-32
-
-
-
-
-87
-
-
-
-
-
-
-
-
-
-87
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
DS297F3 7
CS4340
ANALOG CHARACTERISTICS (CS4340-DSZ) (Continued)
Parameters Symbol Min Typ Max Units
Dynamic Performance for All Modes
Interchannel Isolation (1 kHz) - 102 - dB
DC Accuracy
Interchannel Gain Mismatch - 0.1 - dB
Gain Drift - ±100 - ppm/°C
Analog Output Characteristics and Specifications
Full Scale Output Voltage 0.6•VA 0.7•VA 0.8•VA Vpp
Output Impedance - 100 - Ω
Minimum AC-Load Resistance
Maximum Load Capacitance
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE (The
filter characteristics and the X-axis of the response plots have been normalized to the sample rate (Fs) and can be
referenced to the desired sample rate by multiplying the given characteristic by Fs.)
Parameter Min Typ Max Unit
Single-Speed Mode - (4 kHz to 50 kHz sample rates)
Passband
Frequency Response 10 Hz to 20 kHz -0.02 - +0.08 dB
StopBand 0.5465 - - Fs
StopBand Attenuation
Group Delay - 9/Fs - s
Passband Group Delay Deviation 0 - 20 kHz - ±0.36/Fs - s
De-emphasis Error (Relative to 1 kHz) Fs = 44.1 kHz
(Note 5)
Double-Speed Mode - (50 kHz to 100 kHz sample rates)
Passband
Frequency Response 10 Hz to 20 kHz -0.06 - +0.2 dB
StopBand 0.577 - - Fs
StopBand Attenuation
Group Delay - 4/Fs - s
Passband Group Delay Deviation 0 - 40 kHz
(Note 3) R
(Note 3) C
to -0.05 dB corner
to -3 dB corner
(Note 4) 50 - - dB
to -0.1 dB corner
to -3 dB corner
(Note 4) 55 - - dB
0 - 20 kHz
L
L
-3-kΩ
- 100 - pF
0
0
--+0.05/-0.14dB
0
0
-
-
-
-
-
-
±1.39/Fs
±0.23/Fs
0.4535
0.4998
0.4621
0.4982
-
-
Fs
Fs
Fs
Fs
s
s
Notes: 4. For Single-Speed Mode, the measurement bandwidth is 0.5465 Fs to 3 Fs.
For Double-Speed Mode, the measurement bandwidth is 0.577 Fs to 1.4 Fs.
5. De-emphasis is only available in Single-Speed Mode.
8 DS297F3
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