CS4340A
24-Bit, 192 kHz Stereo DAC for Audio
Features
Description
101 dB Dynamic Range
-91 dB THD+N
+3.3 V or +5 V Power Supply
50 mW with 3.3 V supply
Low Clock Jitter Sensitivity
Filtered Line Level Outputs
On-Chip Digital De-emphasis for 44.1kHz
Popguard® Technology for Control of Clicks
The CS4340A is a complete stereo digital-to-analog system including digital interpolation, fourth-order deltasigma 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 CS4340A accepts data at all standard audio sample
rates up to 192 kHz, consumes very little power, operates over a wide power supply range and is pin
compatible with the CS4340, as described in section 3.1.
These features are ideal for DVD audio players.
and Pops
Up to 200 kHz Sample Rates
Automatic Mode Detection for Sample Rates
between 4 and 200 kHz
Pin Compatible with the CS4340
SCLK
ORDERING INFORMATION
CS4340A-KS
16-pin SOIC, -10 to 70 °C
CDB4340A
Evaluation Board
DEM
MUTEC
De-emphasis
External
Mute Control
RST
LRCK
Serial
Audio
Interface
SDIN
Interpolation
Filter
∆ Σ DAC
Analog Filter
AOUT L
Interpolation
Filter
∆ Σ DAC
Analog Filter
AOUTR
DIF0 DIF1
Preliminary Product Information
http://www.cirrus.com
MCLK
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright Cirrus Logic, Inc. 2002
(All Rights Reserved)
OCT ‘02
DS590PP2
1
CS4340A
TABLE OF CONTENTS
1. PIN DESCRIPTION ......................................................................................... 4
2. TYPICAL CONNECTION DIAGRAM .............................................................. 5
3. APPLICATIONS .............................................................................................. 6
3.1 Upgrading from the CS4340 to the CS4340A ...................................... 6
3.2 Sample Rate Range/Operational Mode Detect ................................... 6
3.3 System Clocking .................................................................................. 6
3.4 Digital Interface Format ....................................................................... 7
3.5 De-Emphasis ....................................................................................... 8
3.6 Power-up Sequence ............................................................................ 9
3.7 Popguard® Transient Control .............................................................. 9
3.7.1 Power-up .................................................................................... 9
3.7.2 Power-down ............................................................................... 9
3.7.3 Discharge Time .......................................................................... 9
3.8 Mute Control ...................................................................................... 10
3.9 Grounding and Power Supply Arrangements .................................... 10
4. CHARACTERISTICS AND SPECIFICATIONS ............................................ 11
ANALOG CHARACTERISTICS (CS4340A-KS) ........................................ 11
COMBINED INTERPOLATION
& ON-CHIP ANALOG FILTER RESPONSE.............................................. 13
SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE ............. 16
DC ELECTRICAL CHARACTERISTICS ................................................... 17
DIGITAL INTERFACE SPECIFICATIONS ................................................ 17
DIGITAL INPUT CHARACTERISTICS ...................................................... 17
THERMAL CHARACTERISTICS AND SPECIFICATIONS ....................... 17
RECOMMENDED OPERATING SPECIFICATION ................................. 18
ABSOLUTE MAXIMUM RATINGS ............................................................ 18
5. PARAMETER DEFINITIONS ........................................................................ 19
6. REFERENCES .............................................................................................. 19
7. PACKAGE DIMENSIONS ............................................................................. 20
Contacting Cirrus Logic Support
For all product questions and inquiries contact a Cirrus Logic Sales Representative.
To find one nearest you go to http://www.cirrus.com/corporate/contacts/sales.cfm
IMPORTANT NOTICE
"Preliminary" product information describes products that are in production, but for which full characterization data is not yet available. "Advance" product information describes products that are in development and subject to development changes. Cirrus Logic, Inc. and its subsidiaries ("Cirrus") believe 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). Customers are advised to 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, patent infringement, and limitation of liability. No responsibility is assumed by Cirrus for the use of this information, including use of this
information as the basis for manufacture or sale of any items, or for infringement of patents or other rights of third parties. This document is the property of Cirrus
and by furnishing this information, Cirrus grants no license, express or implied under any patents, mask work rights, copyrights, trademarks, trade secrets or
other intellectual property rights. Cirrus owns the copyrights of the information contained herein and gives consent for copies to be made of the information only
for use within your organization with respect to Cirrus integrated circuits or other parts of Cirrus. This consent does not extend to other copying such as copying
for general distribution, advertising or promotional purposes, or for creating any work for resale.
An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. An export license and/or quota needs to be
obtained from the competent authorities of the Chinese Government if any of the products or technologies described in this material is subject to the PRC Foreign
Trade Law and is to be exported or taken out of the PRC.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE
PROPERTY OR ENVIRONMENTAL DAMAGE ("CRITICAL APPLICATIONS"). CIRRUS PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF CIRRUS PRODUCTS
IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER'S RISK.
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 trademarks or service marks of their respective owners.
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DS590PP2
CS4340A
LIST OF FIGURES
Figure 1. Typical Connection Diagram............................................................................................ 5
Figure 2. CS4340A Format 0 - I2S up to 24-Bit Data ...................................................................... 7
Figure 3. CS4340A Format 1 - Left Justified up to 24-Bit Data....................................................... 8
Figure 4. CS4340A Format 2 - Right Justified, 24-Bit Data ............................................................ 8
Figure 5. CS4340A Format 3 - Right Justified, 16-Bit Data ............................................................ 8
Figure 6. De-Emphasis Curve......................................................................................................... 8
Figure 7. Output Test Load ........................................................................................................... 12
Figure 8. Maximum Loading.......................................................................................................... 12
Figure 9. Single-Speed Stopband Rejection ................................................................................. 14
Figure 10. Single-Speed Transition Band ..................................................................................... 14
Figure 11. Single-Speed Transition Band (Detail)......................................................................... 14
Figure 12. Single-Speed Passband Ripple ................................................................................... 14
Figure 13. Double-Speed Stopband Rejection.............................................................................. 14
Figure 14. Double-Speed Transition Band.................................................................................... 14
Figure 15. Double-Speed Transition Band (Detail) ....................................................................... 15
Figure 16. Double-Speed Passband Ripple.................................................................................. 15
Figure 17. Serial Input Timing ....................................................................................................... 16
LIST OF TABLES
Table 1. CS4340A Auto-Detect....................................................................................................... 6
Table 2. Single-Speed Mode Standard Frequencies ...................................................................... 7
Table 3. Double-Speed Mode Standard Frequencies..................................................................... 7
Table 4. Quad-Speed Mode Standard Frequencies ....................................................................... 7
Table 5. Digital Interface Format - DIF1 and DIF0 .......................................................................... 7
Table 6. De-Emphasis Control ........................................................................................................ 8
DS590PP2
3
CS4340A
1. PIN DESCRIPTION
RST
1
16
MUTEC
SDIN
2
15
AOUTL
SCLK
3
14
VA
LRCK
4
13
AGND
MCLK
5
12
AOUTR
DIF1
6
11
REF_GND
DIF0
7
10
VQ
DEM
8
9
FILT+
Pin Name
#
Pin Description
RST
1
Reset (Input) - Powers down device.
SDIN
2
Serial Audio Data (Input) - Input for two’s complement serial audio data.
SCLK
3
Serial Clock (Input) -Serial clock for the serial audio interface.
LRCK
4
Left Right Clock (Input) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
MCLK
5
Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.
DIF1
DIF0
6
7
Digital Interface Format (Input) - Defines the required relationship between the Left Right
Clock, Serial Clock and Serial Audio Data.
DEM
8
De-emphasis Control (Input) - Selects the standard 15µs/50µs digital de-emphasis filter
response for the 44.1 kHz sample rate.
FILT+
9
Positive Voltage Reference (Output) - Positive voltage reference for the internal
sampling circuits.
VQ
10
Quiescent Voltage (Output) - Filter connection for internal quiescent reference voltage.
REF_GND
11
Reference Ground (Input) - Ground reference for the internal sampling circuits.
AOUTR
AOUTL
12
15
Analog Outputs (Output) - The full scale analog output level is specified in the
Analog Characteristics table.
AGND
13
Analog Ground (Input)
VA
14
Power (Input) - Positive power for the analog, digital and serial audio interface sections.
MUTEC
16
Mute Control (Output) - Control signal for an optional mute circuit.
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DS590PP2
CS4340A
2. TYPICAL CONNECTION DIAGRAM
+3.3V or +5.0V
+
0.1 µ F
14
1 µF
VA
2
Serial Audio
Data
Processor
3
4
SDIN
3.3 µF
S CLK
AOUT L
560 Ω
Left
Audio
O utput
15
+
LR CK
C
10 k Ω
RL
CS4340A
M UTEC 16
Externa l Clock
5
M CLK
FILT+
VQ
6
7
Mode
Configuration
OPTIONAL
MUTE
CIRCUIT
9
+
10
.1 µF + 1 µF
0.1 µF
1 µF
11
DIF1
REF_GND
3.3 µF
DIF0
560 Ω
Right
Audio
O utput
12
8
AOUTR
DEM
1
+
10 k Ω
RST
C
RL
AGND
13
C=
R L + 560
4 π F S R L 560
Figure 1. Typical Connection Diagram
DS590PP2
5
CS4340A
3. APPLICATIONS
3.1
Upgrading from the CS4340 to the CS4340A
The CS4340A is pin and functionally compatible with all CS4340 designs, operating at the standard audio
sample rates, that use pin 3 as a serial clock input. In addition to the features of the CS4340, the CS4340A
supports standard sample rates up to 192 kHz, as well as automatic mode detection for sample rates between 4 and 200 kHz. The automatic mode detection feature allows sample rate changes between single,
double and quad-speed modes without external intervention.
The CS4340A does not support an internal serial clock mode, sample rates between 50 kHz and 84 kHz or
de-emphasis for 32 and 48 kHz, as does the CS4340.
3.2
Sample Rate Range/Operational Mode Detect
The device operates in one of three operational modes. It will auto-detect the correct mode when the input
sample rate (Fs), defined by the LRCK frequency, falls within one of the ranges illustrated in Table 1. Sample rates outside the specified range for each mode are not supported.
Input Sample Rate (FS)
4 kHz - 50 kHz
84 kHz - 100 kHz
170 kHz - 200 kHz
MODE
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
Table 1. CS4340A Auto-Detect
3.3
System Clocking
The device requires external generation of the master (MCLK), left/right (LRCK) and serial (SCLK)
clocks. The LRCK, defined also as the input sample rate (Fs), must be synchronously derived from the
MCLK according to specified ratios. The specified ratios of MCLK to LRCK, along with several standard
audio sample rates and the required MCLK frequency, are illustrated in Tables 2-4.
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DS590PP2
CS4340A
Sample Rate
(kHz)
MCLK (MHz)
256x
8.1920
11.2896
12.2880
32
44.1
48
384x
12.2880
16.9344
18.4320
512x
16.3840
22.5792
24.5760
768x
24.5760
33.8688
36.8640
Table 2. Single-Speed Mode Standard Frequencies
Sample Rate
(kHz)
128x
11.2896
12.2880
88.2
96
MCLK (MHz)
192x
256x
16.9344
22.5792
18.4320
24.5760
384x
33.8688
36.8640
Table 3. Double-Speed Mode Standard Frequencies
Sample Rate
(kHz)
MCLK (MHz)
128x
22.5792
24.5760
176.4
192
192x
33.8688
36.8640
Table 4. Quad-Speed Mode Standard Frequencies
3.4
Digital Interface Format
The device will accept audio samples in several digital interface formats as illustrated in Table 5. The desired format is selected via the DIF1 and DIF0 pins. For an illustration of the required relationship between
LRCK, SCLK and SDIN, see Figures 2-5.
DIF1
0
0
1
1
DIF0
0
1
0
1
DESCRIPTION
I2S, up to 24-bit data
Left Justified, up to 24-bit data
Right Justified, 24-bit Data
Right Justified, 16-bit Data
FORMAT
0
1
2
3
FIGURE
2
3
4
5
Table 5. Digital Interface Format - DIF1 and DIF0
Le ft C h a nn el
LR C K
R ig h t C h a nn e l
SCLK
S D IN
MSB
-1 -2 -3 -4 -5
+ 5 + 4 +3 + 2 + 1
LS B
MSB
-1 -2 -3 -4
+ 5 + 4 + 3 +2 + 1
LS B
Figure 2. CS4340A Format 0 - I2S up to 24-Bit Data
DS590PP2
7
CS4340A
Le ft C h a nn el
LR C K
R ig h t C h a nn e l
SCLK
S D IN
M SB
-1 -2 -3 -4 -5
+ 5 + 4 +3 + 2 + 1
M S B -1
LS B
-2 -3 -4
+5 +4 +3 +2 +1
LS B
Figure 3. CS4340A Format 1 - Left Justified up to 24-Bit Data
LR CK
R ig h t C h a n n el
L ef t C h a n ne l
SCLK
SDIN
0
7
23 22 21 20 19 18
6
5
4
3
2
1
0
7
23 22 21 20 19 18
6
5
4
3
2
1
0
Figure 4. CS4340A Format 2 - Right Justified, 24-Bit Data
3 2 c lo cks
LR CK
R ig h t C h a n n el
L ef t C h a n ne l
S CLK
S DIN
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Figure 5. CS4340A Format 3 - Right Justified, 16-Bit Data
3 2 c lo cks
3.5
De-Emphasis
The device includes on-chip digital de-emphasis. Figure 6 shows the de-emphasis curve for Fs equal to
44.1 kHz. The frequency response of the de-emphasis curve will scale proportionally with changes in sample rate, Fs. Please see Table 6 for the desired de-emphasis control.
Gain
dB
T1=50 µs
0dB
T2 = 15 µs
-10dB
DEM
DESCRIPTION
0
1
Disabled
44.1 kHz
Table 6. De-Emphasis Control
F1
3.183 kHz
F2
Frequency
10.61 kHz
Figure 6. De-Emphasis Curve
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DS590PP2
CS4340A
3.6
Power-up Sequence
Reliable power-up can be accomplished by keeping the device in reset until the power supply and configuration pins are stable, and the clocks are locked to the appropriate frequencies discussed in section 3.3. It
is also recommended that reset be enabled if the analog supply drops below the minimum specified operating voltage to prevent power glitch related issues.
3.7
Popguard® Transient Control
The CS4340A uses Popguard® technology to minimize the effects of output transients during power-up
and power-down. This technology, when used with external DC-blocking capacitors in series with the audio outputs, minimizes the audio transients commonly produced by single-ended single-supply converters.
It is activated inside the DAC when RST is enabled/disabled and requires no other external control, aside
from choosing the appropriate DC-blocking capacitors.
3.7.1
Power-up
When the device is initially powered-up, the audio outputs, AOUTL and AOUTR, are clamped to
AGND. Following a delay of approximately 1000 sample periods, each output begins to ramp toward the quiescent voltage. Approximately 10,000 LRCK cycles later, the outputs reach VQ and
audio output begins. This gradual voltage ramping allows time for the external DC-blocking capacitors to charge to the quiescent voltage, minimizing the power-up transient.
3.7.2
Power-down
To prevent transients at power-down, the device must first enter its power-down state by enabling
RST. When this occurs, audio output ceases and the internal output buffers are disconnected from
AOUTL and AOUTR. In their place, a soft-start current sink is substituted which allows the DCblocking capacitors to slowly discharge. Once this charge is dissipated, the power to the device
may be turned off and the system is ready for the next power-on.
3.7.3
Discharge Time
To prevent an audio transient at the next power-on, it is necessary to ensure that the DC-blocking
capacitors have fully discharged before turning on the power or exiting the power-down state. If
not, a transient will occur when the audio outputs are initially clamped to AGND. The time that the
device must remain in the power-down state is related to the value of the DC-blocking capacitance.
For example, with a 3.3 µF capacitor, the minimum power-down time will be approximately
0.4 seconds.
DS590PP2
9
CS4340A
3.8
Mute Control
The Mute Control pin goes high during power-up initialization, reset, or if the MCLK to LRCK ratio is
incorrect. The pin will also go high following the reception of 8192 consecutive audio samples of static 0
or -1 on both the left and right channels. A single sample of non-zero data on either channel will cause the
Mute Control pin to go low. This pin is intended to be used as a control for an external mute circuit to prevent the clicks and pops that can occur in any single-ended single supply system.
Use of the Mute Control function is not mandatory but recommended for designs requiring the absolute
minimum in extraneous clicks and pops. Also, use of the Mute Control function can enable the system designer to achieve idle channel noise/signal-to-noise ratios which are only limited by the external mute circuit. See the CDB4340A data sheet for a suggested mute circuit.
3.9
Grounding and Power Supply Arrangements
As with any high resolution converter, the CS4340A requires careful attention to power supply and
grounding arrangements if its potential performance is to be realized. Figure 1 shows the recommended
power arrangements, with VA connected to a clean supply. If the ground planes are split between digital
ground and analog ground, REF_GND & AGND should be connected to the analog ground plane.
Decoupling capacitors should be as close to the DAC as possible, with the low value ceramic capacitor
being the closest. To further minimize impedance, these capacitors should be located on the same layer as
the DAC.
All signals, especially clocks, should be kept away from the FILT+ and VQ pins in order to avoid unwanted coupling into the modulators. The FILT+ and VQ decoupling capacitors, particularly the 0.1 µF, must
be positioned to minimize the electrical path from FILT+ and REF_GND (as well as VQ and REF_GND),
and should also be located on the same layer as the DAC. The CDB4340A evaluation board demonstrates
the optimum layout and power supply arrangements.
10
DS590PP2
CS4340A
4. CHARACTERISTICS AND SPECIFICATIONS Typical performance characteristics are derived
from measurements taken at TA = 25 °C, VA = 3.3 V and VA = 5.0 V. Min/Max performance characteristics are
guaranteed over the specified operating temperature and voltages.)
ANALOG CHARACTERISTICS (CS4340A-KS) (Test conditions (unless otherwise specified):
Input test signal is a 997 Hz sine wave; measurement bandwidth is 10 Hz to 20 kHz; test load RL = 10 kΩ, CL = 10
pF (see Figure 7).)
VA = 5.0V
Parameter
Single-Speed Mode
Dynamic Range
18 to 24-Bit
16-Bit
Total Harmonic Distortion + Noise
18 to 24-Bit
16-Bit
Double-Speed Mode
Dynamic Range
18 to 24-Bit
16-Bit
Total Harmonic Distortion + Noise
18 to 24-Bit
16-Bit
Quad-Speed Mode
Dynamic Range
18 to 24-Bit
16-Bit
Total Harmonic Distortion + Noise
18 to 24-Bit
16-Bit
DS590PP2
VA = 3.3V
Min
Typ
Max
Min
Typ
Max
Unit
92
95
-
98
101
92
95
-
88
91
-
94
97
92
95
-
dB
dB
dB
dB
-
-91
-78
-38
-90
-72
-32
-85
-
-
-94
-74
-34
-91
-72
-32
-88
-
dB
dB
dB
dB
dB
dB
92
95
-
98
101
92
95
-
88
91
-
94
97
92
95
-
dB
dB
dB
dB
-
-91
-78
-38
-90
-72
-32
-85
-
-
-94
-74
-34
-91
-72
-32
-88
-
dB
dB
dB
dB
dB
dB
92
95
-
98
101
92
95
-
88
91
-
94
97
92
95
-
dB
dB
dB
dB
-
-91
-78
-38
-90
-72
-32
-85
-
-
-94
-74
-34
-91
-72
-32
-88
-
dB
dB
dB
dB
dB
dB
Fs = 48kHz
(Note 1)
unweighted
A-Weighted
unweighted
A-Weighted
(Note 1)
0 dB
-20 dB
-60 dB
0 dB
-20 dB
-60 dB
Fs = 96kHz
(Note 1)
unweighted
A-Weighted
unweighted
A-Weighted
(Note 1)
0 dB
-20 dB
-60 dB
0 dB
-20 dB
-60 dB
Fs = 192kHz
(Note 1)
unweighted
A-Weighted
unweighted
A-Weighted
(Note 1)
0 dB
-20 dB
-60 dB
0 dB
-20 dB
-60 dB
11
CS4340A
ANALOG CHARACTERISTICS (CS4340A-KS) (Continued)
Parameters
Symbol
Min
Typ
Max
Units
-
102
-
dB
Interchannel Gain Mismatch
-
0.1
-
dB
Gain Drift
-
±100
-
ppm/°C
0.6•VA
0.7•VA
0.8•VA
Vpp
-
100
-
Ω
Dynamic Performance for All Modes
Interchannel Isolation (1 kHz)
DC Accuracy
Analog Output Characteristics and Specifications
Full Scale Output Voltage
Output Impedance
Minimum AC-Load Resistance
(Note 2)
RL
-
3
-
kΩ
Maximum Load Capacitance
(Note 2)
CL
-
100
-
pF
Notes: 1. One-half LSB of triangular PDF dither is added to data.
2. Refer to Figure 8.
.
3.3 µF
AOUTx
+
V
out
R
L
AGND
C
L
Capacitive Load -- C L (pF)
125
100
75
25
2.5
3
Figure 7. Output Test Load
12
Safe Operating
Region
50
5
10
15
20
Resistive Load -- RL (kΩ )
Figure 8. Maximum Loading
DS590PP2
CS4340A
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
0
0
-
0.4535
0.4998
Fs
Fs
-0.02
-
+0.08
dB
0.5465
-
-
Fs
50
-
-
dB
-
9/Fs
-
s
0 - 20 kHz
-
±0.36/Fs
-
s
Fs = 44.1 kHz
-
-
+0.05/-0.14
dB
0
0
-
0.4621
0.4982
Fs
Fs
Frequency Response 10 Hz to 20 kHz
-0.06
-
+0.2
dB
StopBand
0.577
-
-
Fs
55
-
-
dB
-
4/Fs
-
s
-
±1.39/Fs
±0.23/Fs
-
s
s
Frequency Response 10 Hz to 20 kHz
-1
-
0
dB
Group Delay
-
3/Fs
-
s
Single-Speed Mode - (4 kHz to 50 kHz sample rates)
Passband
to -0.05 dB corner
to -3 dB corner
Frequency Response 10 Hz to 20 kHz
StopBand
StopBand Attenuation
(Note 3)
Group Delay
Passband Group Delay Deviation
De-emphasis Error (Relative to 1 kHz)
(Note 4)
Double-Speed Mode - (84 kHz to 100 kHz sample rates)
Passband
to -0.1 dB corner
to -3 dB corner
StopBand Attenuation
(Note 3)
Group Delay
Passband Group Delay Deviation
0 - 40 kHz
0 - 20 kHz
Quad-Speed Mode - (170 kHz to 200 kHz sample rates)
Notes: 3. 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.
4. De-emphasis is only available in Single-Speed Mode.
DS590PP2
13
CS4340A
Figure 9. Single-Speed Stopband Rejection
Figure 11. Single-Speed Transition Band (Detail)
Figure 13. Double-Speed Stopband Rejection
14
Figure 10. Single-Speed Transition Band
Figure 12. Single-Speed Passband Ripple
Figure 14. Double-Speed Transition Band
DS590PP2
CS4340A
Figure 15. Double-Speed Transition Band (Detail)
DS590PP2
Figure 16. Double-Speed Passband Ripple
15
CS4340A
SWITCHING SPECIFICATIONS - SERIAL AUDIO INTERFACE
Parameters
Symbol
Min
Max
Units
MCLK Frequency
1.024
38.4
MHz
MCLK Duty Cycle
45
55
%
4
84
170
50
100
200
kHz
kHz
kHz
40
60
%
-
128xFs
64xFs
Hz
Hz
-
MCLK
-----------------2
Hz
Input Sample Rate
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
(Note 5)
Fs
Fs
Fs
LRCK Duty Cycle
SCLK Frequency
Single-Speed Mode
Double-Speed Mode
Quad-Speed Mode
SCLK Pulse Width Low
tsclkl
20
-
ns
SCLK Pulse Width High
tsclkh
20
-
ns
SCLK rising to LRCK edge delay
tslrd
20
-
ns
SCLK rising to LRCK edge setup time
tslrs
20
-
ns
SDIN valid to SCLK rising setup time
tsdlrs
20
-
ns
SCLK rising to SDIN hold time
tsdh
20
-
ns
Notes: 5. Speed mode is detected automatically, based on the input sample rate.
LR C K
t
t
slrd
t
slrs
t
sclk h
sc lk l
S C LK
t
t
sd lrs
sdh
S D IN
Figure 17. Serial Input Timing
16
DS590PP2
CS4340A
DC ELECTRICAL CHARACTERISTICS
(AGND = 0V; all voltages with respect to AGND.)
Parameters
Symbol
Min
Typ
Max
Units
IA
-
18
15
25
20
mA
mA
-
90
50
125
100
mW
mW
-
60
35
-
µA
µA
-
0.3
0.1
-
mW
mW
-
60
40
-
dB
dB
VQ Nominal Voltage
Output Impedance
Maximum allowable DC current source/sink
-
0.5•VA
250
0.01
-
kΩ
Filt+ Nominal Voltage
Output Impedance
Maximum allowable DC current source/sink
-
VA
250
0.01
-
mA
MUTEC Low-Level Output Voltage
-
0
-
V
MUTEC High-Level Output Voltage
-
VA
-
V
Maximum MUTEC Drive Current
-
3
-
mA
Normal Operation (Note 6)
Power Supply Current
VA = 5.0V
VA = 3.3V
Power Dissipation
VA = 5.0V
VA = 3.3V
Power-down Mode (Note 7)
Power Supply Current
VA = 5.0V
VA = 3.3V
Power Dissipation
VA = 5.0V
VA = 3.3V
IA
All Modes of Operation
1 kHz
60 Hz
Power Supply Rejection Ratio (Note 8)
DIGITAL INTERFACE SPECIFICATIONS
PSRR
V
mA
V
kΩ
(GND = 0 V; all voltages with respect to GND.)
Parameters
Symbol
Min
Max
Units
High-Level Input Voltage
VIH
2.0
-
V
Low-Level Input Voltage
VIL
-
0.8
V
High-Level Input Voltage
VIH
2.0
-
V
Low-Level Input Voltage
VIL
-
0.8
V
3.3 V Logic (2.7 V to 3.6 V DC Supply)
5.0 V Logic (4.5 V to 5.5 V DC Supply)
DIGITAL INPUT CHARACTERISTICS (AGND = 0V; all voltages with respect to AGND.)
Parameters
Input Leakage Current
Symbol
Min
Typ
Max
Units
Iin
-
-
±10
µA
-
8
-
pF
Input Capacitance
THERMAL CHARACTERISTICS AND SPECIFICATIONS
Parameters
Symbol
Min
Typ
Max
Units
Package Thermal Resistance (multi-layer boards)
θJA
-
74
-
°C/Watt
Ambient Operating Temperature
TA
-10
-
+70
°C
DS590PP2
(Power Applied)
17
CS4340A
RECOMMENDED OPERATING SPECIFICATION
Parameters
Symbol
Min
Typ
Max
Units
VA
2.7
4.5
3.3
5
3.6
5.5
V
V
DC Power Supply
3.3 V Nominal
5.0 V Nominal
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
DC Power Supply
Input Current
(Note 9)
Symbol
Min
Max
Units
VA
-0.3
6.0
V
Iin
-
±10
mA
VIND
-0.3
VA+0.4
V
Ambient Operating Temperature (power applied)
TA
-55
125
°C
Storage Temperature
Tstg
-65
150
°C
Digital Input Voltage
Notes: 6. Normal operation is defined as RST = HI with a 997 Hz, 0dBFS input sampled at the highest Fs for each
speed mode, and open outputs, unless otherwise specified.
7. Power Down Mode is defined as RST = LO with all clocks and data lines held static.
8. Valid with the recommended capacitor values on FILT+ and VQ as shown in Figure 1. Increasing the
capacitance will also increase the PSRR.
9. Any pin except supplies.
18
DS590PP2
CS4340A
5. PARAMETER DEFINITIONS
Total Harmonic Distortion + Noise (THD+N)
The ratio of the rms value of the signal to the rms sum of all other spectral components over the specified
bandwidth (typically 10Hz to 20kHz), including distortion components. Expressed in decibels.
Dynamic Range
The ratio of the full scale rms value of the signal to the rms sum of all other spectral components over the
specified bandwidth. Dynamic range is a signal-to-noise measurement over the specified bandwidth
made with a -60 dBFS signal. 60 dB is then added to the resulting measurement to refer the measurement
to full scale. This technique ensures that the distortion components are below the noise level and do not
affect the measurement. This measurement technique has been accepted by the Audio Engineering Society, AES17-1991, and the Electronic Industries Association of Japan, EIAJ CP-307.
Interchannel Isolation
A measure of crosstalk between the left and right channels. Measured for each channel at the converter’s
output with all zeros to the input under test and a full-scale signal applied to the other channel. Units in
decibels.
Interchannel Gain Mismatch
The gain difference between left and right channels. Units in decibels.
Gain Drift
The change in gain value with temperature. Units in ppm/°C.
6. REFERENCES
1) CDB4340A Evaluation Board Datasheet
DS590PP2
19
CS4340A
7. PACKAGE DIMENSIONS
16L SOIC (150 MIL BODY) PACKAGE DRAWING
E
H
1
b
c
D
SEATING
PLANE
∝
A
L
e
DIM
A
A1
b
C
D
E
e
H
L
∝
MIN
0.053
0.004
0.013
0.0075
0.386
0.150
0.040
0.228
0.016
0°
A1
INCHES
NOM
0.064
0.006
0.016
0.008
0.390
0.154
0.050
0.236
0.025
4°
MAX
0.069
0.010
0.020
0.010
0.394
0.157
0.060
0.244
0.050
8°
MIN
1.35
0.10
0.33
0.19
9.80
3.80
1.02
5.80
0.40
0°
MILLIMETERS
NOM
1.63
0.15
0.41
0.20
9.91
3.90
1.27
6.0
0.64
4°
MAX
1.75
0.25
0.51
0.25
10.00
4.00
1.52
6.20
1.27
8°
JEDEC #: MS-012
Controling Dimension is Millimeters
20
DS590PP2