CIRRUS LOGIC CS5343 Service Manual
Draft
4/2/08
CS5343/4
98 dB, 96 kHz, Multi-Bit Audio A/D Converter
Features
Advanced Multi-Bit ∆Σ Architecture
24-bit Conversion
Supports Audio Sample Rates Up to 108 kHz
98 dB Dynamic Range at 5 V
-92 dB THD+N at 5 V
Low-Latency Digital Filter
High-Pass Filter to Remove DC Offsets
Single +3.3 V or +5 V Power Supply
Power Consumption < 40 mW at 3.3 V
Master or Slave Operation
Slave Mode Speed Auto-Detect
Master Mode Default Settings
256x or 384x MCLK/LRCK Ratio
CS5343 Supports I²S Audio Format
CS5344 Supports Left-Justified Audio Format
General Description
The CS5343/4 is a complete analog-to-digital converter
for digital audio systems. It perfor ms sa mplin g, an alog to-digital conversion, and anti-alias filtering, generating
24-bit values for both left and right inputs in serial form
at sample rates up to 108 kHz per channel.
The CS5343/4 uses a 3rd-order, multi-bit Delta-Sigma
modulator followed by a digital filter, which removes the
need for an external anti-alias filter.
The CS5343/4 also features a high-impedance sampling network which eliminates costly external
components such as op-amps.
The CS5343/4 is available in a 10-pin TSSOP package
for both Commercial (-40° to +85° C) and Automotive
grades (-40° to +105° C). The CDB5343 Customer
Demonstration Board is also available for device evaluation and implementation suggestions. Please refer to
the “Ordering Information” on page 20 for complete
details.
The CS5343/4 is ideal for audio systems requiring wide
dynamic range, negligible distortion and low noise, such
as set-top boxes, DVD-karaoke players, DVD recorders, A/V receivers, and automotive applications.
Single-Ended
Analog Input
Single-Ended
Analog Input
http://www.cirrus.com
AINL
FILT+
VQ
AINR
High-Z
Sampling
Network
Interna l
Reference
Voltages
High-Z
Sampling
Network
VA
3.3 V to 5 V
Low-Latency
High-Pass
High-Pass
Filter
Filter
High-Pass
Filter
Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
Digital F ilters
Low-Latency
Digital F ilters
Auto-detect
MCLK Divider
Slave Mode
Auto-detect
Serial Port
Master
Clock
SCLK
LRCK
SDOUT
April '08
DS687F3
TABLE OF CONTENTS
1. PIN DESCRIPTIONS .............................................................................................................................. 4
2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 5
RECOMMENDED OPERATING CONDITIONS ..................................................................................... 5
ABSOLUTE MAXIMUM RATINGS ......................................................................................................... 5
ANALOG CHARACTERISTICS - COMMERCIAL GRADE (-CZZ) ......................................................... 6
ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE (-DZZ) ......................................................... 7
DIGITAL FILTER CHARACTERISTICS ................................................................................................8
DC ELECTRICAL CHARACTERISTICS ........................ ... ... .......................................... ... ... .... ... ........... 8
DIGITAL CHARACTERISTICS ............................................................................................................... 9
SYSTEM CLOCKING AND SERIAL AUDIO INTERFACE ................................................................... 10
3. TYPICAL CONNECTION DIAGRAM ................................................................................................... 12
4. APPLICATIONS ................................................................................................................................... 13
4.1 Operation as Clock Master or Slave ............................................................................................... 13
4.1.1 Slave Mode Operation .................... .... ... ... ....................................... ... ... .... ... ... ... ... .... ............ 13
4.1.2 Master Mode Operation ......................................................................................................... 14
4.1.2.1 Master Mode Speed Selection ................................................................................... 14
4.1.3 Master Clock ............................................... .... ... ... ... .... ... ... ... ................................................ 14
4.2 Serial Audio Interface ..................................................................................................................... 15
4.3 Digital Interface ............................................................................................................................... 15
4.4 Analog Connections ....................................................................................................................... 15
4.4.1 Component Values ... .......................................... .......................................... ... ...................... 16
4.5 Grounding and Power Supply Decoupling ...................... ... .... ... ... ... ... .... .........................................16
4.6 Synchronization of Multiple Devices ............................................................................................... 17
5. FILTER PLOTS - ALL SPEED MODES ............................................................................................... 17
6. PARAMETER DEFINITIONS ................................................................................................................ 18
7. PACKAGE DIMENSIONS .................................................................................................................... 19
THERMAL CHARACTERISTICS .......................................................................................................... 19
8. ORDERING INFORMATION ................................................................................................................ 20
9. REVISION HISTORY ............................................................................................................................ 21
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CS5343/4
LIST OF FIGURES
Figure 1. CS5343 I²S Serial Audio Interface.............................................................................................. 11
Figure 2. CS5344 Left-Justified Serial Audio Interface........... ... ............................................. ................... 11
Figure 3. Typical Connection Diagram............................. .... ... ... ... .... ... ... ... ... .... ......................................... 12
Figure 4. CS5343 I²S Serial Audio Interface.............................................................................................. 15
Figure 5. CS5344 Left-Justified Serial Audio Interface........... ... ............................................. ................... 15
Figure 6. CS5343/4 Analog Input Network................................................................................................. 15
Figure 7. CS5343/4 Example Analog Input Network.................................................................................. 16
Figure 8. Stopband Rejection..................................................................................................................... 17
Figure 9. Transition Band........................................................................................................................... 17
Figure 10. Transition Band (Detail)............................................................................................................ 17
Figure 11. Passband Ripple................................ .... ... ... .......................................... ... .... ... ... ...................... 17
2 DS687F3
LIST OF TABLES
Table 1. Master/Slave Mode Selection ...................................................................................................... 13
Table 2. Speed Modes and the Associated Sample Rates (Fs) in Slave Mode................................... ... ... 13
Table 3. Speed Modes and the Associated Sample Rates (Fs) in Master Mode . ... ... .... ... ......................... 14
Table 4. Speed Mode Selection in Master Mode ....................................................................................... 14
Table 5. Common MCLK Frequencies in Master and Slave Modes .......................................................... 14
Table 6. Analog Input Design Parameters................................................................................................. 16
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CS5343/4
DS687F3 3
1. PIN DESCRIPTIONS
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CS5343/4
SDOUT
SCLK
LRCK
MCLK
FILT+
Pin Name Pin # Pin Description
SDOUT 1
SCLK 2 Serial Clock (Input/Output) - Serial clock for the serial audio interface.
LRCK 3
MCLK 4 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.
FILT+ 5 Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.
AINL
AINR
VQ 7 Quiescent Voltage (Output) - Filter connection for the internal quiescent reference voltage.
GND 9 Ground (Input) - Ground reference. Must be connected to analog ground.
VA 10 Power (Input) - Positive power supply for the digital and analog sections.
Serial Audio Data Output (Output) - Output for two’s complement serial audio data. Also selects Master
or Slave Mode; See Section 4.1 on page 13 for details.
Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.
68Analog Input (Input) - The full-scale analog input level is specified in the Analog Characteristics specifi-
cation table.
1
2
3
4
5
10
9
8
7
6
VA
GND
AINR
VQ
AINL
4 DS687F3
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CS5343/4
2. CHARACTERISTICS AND SPECIFICATIONS
RECOMMENDED OPERATING CONDITIONS
GND = 0 V, all voltages with respect to GND.
Parameter Symbol Min Typ Max Unit
Power Supplies
Ambient Operating Temperature Commercial (-CZZ)
Automotive (-DZZ)
T
T
VA
AC
AD
3.1
4.75
-40
-40
3.3
5.0
3.5
5.25
-
-
85
105
ABSOLUTE MAXIMUM RATINGS
GND = 0 V, all voltages with respect to GND. (Note 1)
Parameter Symbol Min Max Unit
DC Power Supplies VA -0.3 +6.0 V
Input Current (Note 2) I
Input Voltage (Note 3) V
Ambient Operating Temperature (Power Applied) T
Storage Temperature T
in
IN
A
stg
-10 +10 mA
-0.7 VA+0.7 V
-50 +115 °C
-65 +150 °C
V
V
°C
°C
Notes:
1. Operation beyond these limits may result in permanent damage to the device. Normal operation is not
guaranteed at these extremes.
2. Any pin except supplies. Transient currents of up to ±100 mA on the analog input pins will not cause
SCR latch-up.
3. The maximum over/under voltage is limited by the input current.
DS687F3 5
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CS5343/4
ANALOG CHARACTERISTICS - COMMERCIAL GRADE (-CZZ)
Test conditions (unless otherwise specified): TA = 25° C; Input test signal is a 997 Hz sine wave through recommended inputs as seen in Figure 6 on page 15; source impedance less than or eq ual to 2.5 kΩ; valid with FILT+
and VQ components as shown in Figure 3 on page 12; measurement bandwidth is 10 Hz to 20 kHz; Fs = 48 kHz
or 96 kHz.
Dynamic Performance for Commercial Grade
Symbol Min Typ Max Min Typ Max Unit
Dynamic Range A-weighted
unweighted
Total Harmonic Distortion + Noise (Note 4)
-1 dB
-20 dB
-60 dB
THD+N
Dynamic Performance for Commercial Grade
Interchannel Isolation - 90 - dB
VA = 3.3 V VA = 5.0 V
91
88
-
-
-
94
91
-89
-71
-31
-86
-
-
-
-
95
92
98
95
-
-
-
-92
-75
-35
-
-
-89
-
-
VA = 3.3 V and VA = 5.0 V
Min Typ Max Unit
dB
dB
dB
dB
dB
DC Accuracy
Interchannel Gain Mismatch - - 0.1 dB
Gain Error -3 - +3 %
Gain Drift -
±100 - ppm/°C
Analog Input Characteristics
Full-scale Input Voltage VA = 3.3V nom 0.560*VA 0.568*VA 0.575*VA Vpp
Full-scale Input Voltage VA = 5 V nom 0.552*VA 0.559*VA 0.567*VA Vpp
Input Impedance - 7.5 - MΩ
Notes:
4. Referred to the typical full-scale input voltage
6 DS687F3
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CS5343/4
ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE (-DZZ)
Test conditions (unless otherwise specified): TA = -40° C to 85° C; Input test signal is a 997 Hz sine wave through
recommended inputs as seen in Figure 6 on page 15; source imped ance less than or equal to 2.5 kΩ; valid with
FILT+ and VQ components as shown in Figure 3 on page 12; measurement bandwidth is 10 Hz to 20 kHz;
Fs = 48 kHz or 96 kHz.
Dynamic Performance for Automotive Grade
Symbol Min Typ Max Min Typ Max Unit
Dynamic Range A-weighted
unweighted
Total Harmonic Distortion + Noise (Note 5)
-1 dB
-20 dB
-60 dB
THD+N
Dynamic Performance for Automotive Grade
Interchannel Isolation - 90 - dB
VA = 3.1 to 3.5 V VA = 4.75 to 5.25 V
86
83
-
-
-
94
91
-88
-71
-31
-
-
-76
-
-
90
87
98
95
-
-91
-
-75
-
-35
-
-
-84
-
-
VA = 3.1 V to 3.5 V and VA = 4.75 V to 5.25 V
Min Typ Max Unit
dB
dB
dB
dB
dB
DC Accuracy
Interchannel Gain Mismatch - - 0.1 dB
Gain Error -3 - +3 %
Gain Drift -
±100 - ppm/°C
Analog Input Characteristics
Full-scale Input Voltage VA = 3.1 V to 3.5 V 0.523*VA 0.567*VA 0.612*VA Vpp
Full-scale Input Voltage VA = 4.75 V to 5.25 V 0.543*VA 0.560*VA 0.573*VA Vpp
Input Impedance - 7.5 - MΩ
Notes:
5. Referred to the typical full-scale input voltage
DS687F3 7
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