Confidential Draft
9/30/11
CS4361
20-Pin, 24-Bit, 192 kHz, 6-Channel D/A Converter
Features
Multi-Bit Delta-Sigma Modulator
24-Bit Conversion
Automatically Detects Sample Rates Up To
Description
The CS4361 is a complete 6-channel digital-to-analog
output system including interpolation, multi-bit D/A con-
version, and output analog filtering in a small 20-pin
package. The CS4361 supports all major audio data in-
terface formats.
The CS4361 is based on a fourth-order, multi-bit, delta-
sigma modulator with a linear analog low-pass filter.
This device also includes auto-speed mode detection
using both sample rate and master clock ratio as a
method of auto-selecting sampling rates between 2 kHz
and 216 kHz.
The CS4361 contains on-chip digital de-emphasis, op-
erates from a single +5 V power supply with separate
built-in level shifter for the digital interface, and requires
minimal support circuitry. These features are ideal for
DVD players and recorders, digital televisions, home
theater and set-top box products, and automotive audio
systems.
The CS4361 is available in a 20-pin TSSOP Commer-
cial grade package (-40 to 85° C). The CDB4361 is also
available for device evaluation and implementation sug-
gestions. Please refer to
“Ordering Information” on
page 23
for complete ordering information.
192 kHz
103 dB Dynamic Range
-94 dB THD+N
Low Clock-Jitter Sensitivity
+5 V Core Power
+1.8 V to +5 V Interface Power
Filtered Line-Level Outputs
On-Chip Digital De-emphasis
Popguard
®
Technology
Mute Output Control
Small 20-pin TSSOP Package
Serial Audio Port & Control
Supply (1.8 V to 5 V)
Analog & Digital Core
Supply (5 V)
Digital
De-emphasis
Mode Control
Level Translator
Internal Voltage
Reference
PCM Serial
Audio Input
Auto-Speed
Detecting PCM
Serial Interface
6
Digital
Filters
Multi-bit
Modulators
Switch-Cap
DAC and
Analog Filters
6
Single-Ended
Outputs
(Six Channels
+5 Volt-tolerant Reset
External Mute
Control
Mute Control
http://www.cirrus.com
Copyright
Cirrus Logic, Inc. 2011
(All Rights Reserved)
SEPT '11
DS672F2
Confidential Draft
9/30/11
TABLE OF CONTENTS
CS4361
1. PIN DESCRIPTIONS .............................................................................................................................. 4
2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 5
RECOMMENDED OPERATING CONDITIONS .................................................................................... 5
ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 5
DAC ANALOG CHARACTERISTICS - COMMERCIAL (-CZZ) ............................................................. 6
COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE ........................................ 7
DIGITAL INPUT CHARACTERISTICS .................................................................................................. 8
POWER & THERMAL CHARACTERISTICS ......................................................................................... 8
SWITCHING CHARACTERISTICS - SERIAL AUDIO INTERFACE ...................................................... 9
3. TYPICAL CONNECTION DIAGRAM ................................................................................................... 11
4. APPLICATIONS ................................................................................................................................... 12
4.1 Master Clock .................................................................................................................................. 12
4.2 Serial Clock .................................................................................................................................... 12
4.2.1 External Serial Clock Mode ................................................................................................... 12
4.2.2 Internal Serial Clock Mode .................................................................................................... 12
4.3 De-Emphasis ................................................................................................................................. 14
4.4 Mode Select ................................................................................................................................... 14
4.5 Initialization and Power-Down ........................................................................................................ 15
4.6 Output Transient Control ................................................................................................................ 16
4.6.1 Power-Up .............................................................................................................................. 16
4.6.2 Power-Down .......................................................................................................................... 16
4.7 Grounding and Power Supply Decoupling ..................................................................................... 16
4.8 Analog Output and Filtering ........................................................................................................... 16
4.9 Mute Control .................................................................................................................................. 17
5. PERFORMANCE PLOTS ..................................................................................................................... 18
6. PARAMETER DEFINITIONS ................................................................................................................ 21
7. PACKAGE INFORMATION .................................................................................................................. 22
8. ORDERING INFORMATION ................................................................................................................ 23
9. REVISION HISTORY ............................................................................................................................ 24
2
Confidential Draft
9/30/11
LIST OF FIGURES
CS4361
Figure 1.Equivalent Output Test Load ........................................................................................................ 8
Figure 2.Maximum Loading ......................................................................................................................... 8
Figure 3.External Serial Mode Input Timing .............................................................................................. 10
Figure 4.Internal Serial Mode Input Timing ............................................................................................... 10
Figure 5. Internal Serial Clock Generation ................................................................................................ 10
Figure 6.Recommended Connection Diagram .......................................................................................... 11
Figure 7.CS4361 Data Format (I²S) .......................................................................................................... 13
Figure 8.CS4361 Data Format (Left-Justified) .......................................................................................... 13
Figure 9.CS4361 Data Format (Right-Justified 24) ................................................................................... 13
Figure 10.CS4361 Data Format (Right-Justified 16) ................................................................................. 14
Figure 11.De-Emphasis Curve (Fs = 44.1kHz) ......................................................................................... 14
Figure 12.CS4361 Initialization and Power-Down Sequence ................................................................... 15
Figure 13.Suggested Active-Low Mute Circuit .......................................................................................... 17
Figure 14.Single-Speed Stopband Rejection ............................................................................................ 18
Figure 15.Single-Speed Transition Band .................................................................................................. 18
Figure 16.Single-Speed Transition Band .................................................................................................. 18
Figure 17.Single-Speed Passband Ripple ................................................................................................ 18
Figure 18.Double-Speed Stopband Rejection ........................................................................................... 19
Figure 19.Double-Speed Transition Band ................................................................................................. 19
Figure 20.Double-Speed Transition Band ................................................................................................. 19
Figure 21.Double-Speed Passband Ripple ............................................................................................... 19
Figure 22.Quad-Speed Stopband Rejection ............................................................................................. 20
Figure 23.Quad-Speed Transition Band ................................................................................................... 20
Figure 24.Quad-Speed Transition Band ................................................................................................... 20
Figure 25.Quad-Speed Passband Ripple ................................................................................................. 20
LIST OF TABLES
Table 1. Common Clock Frequencies ....................................................................................................... 12
Table 2. Mode Pin Settings ....................................................................................................................... 14
3
Confidential Draft
9/30/11
1. PIN DESCRIPTIONS
CS4361
VL
SDIN1
SDIN2
SDIN3
DEM/SCLK
LRCK
MCLK
RST
MODE
FILT+
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Pin Description
MUTEC
AOUT1
AOUT2
AOUT3
AOUT4
VA
GND
AOUT5
AOUT6
VQ
Pin Name
SDIN1
SDIN2
SDIN3
DEM/SCLK
LRCK
MCLK
VQ
FILT+
AOUT1
AOUT2
AOUT3
AOUT4
AOUT5
AOUT6
GND
VA
VL
RST
MUTEC
MODE
#
2
3
4
5
6
7
11
10
19
18
17
16
13
12
14
15
1
8
20
9
Serial Audio Data Input
(Input) - Input for two’s complement serial audio data.
De-emphasis/External Serial Clock Input
(Input) - used for de-emphasis filter control or external serial
clock input.
Left Right Clock
(Input) - Determines which channel, Left or Right, is currently active on the serial
audio data line.
Master Clock
(Input) - Clock source for the delta-sigma modulator and digital filters.
Quiescent Voltage
(Output) - Filter connection for internal quiescent voltage.
Positive Voltage Reference
(Output)
-
Positive reference voltage for the internal sampling
circuits.
Analog Output
(Output) - The full scale analog output level is specified in the Analog Characteristics
specification table.
Ground
(Input) - ground reference.
Analog Power
(Input)
-
Positive power for the analog and core digital sections.
Interface Power
(Input)
-
Positive power for the digital interface level shifters.
Reset
(Input)
-
Applies reset to the internal circuitry when low.
Mute Control
(Output)
-
Control signal for optional external muting circuitry.
Mode Control
(Input)
-
Selects operational modes (see
Table 2).
4
Confidential Draft
9/30/11
2. CHARACTERISTICS AND SPECIFICATIONS
RECOMMENDED OPERATING CONDITIONS
AGND = 0 V; all voltages with respect to ground.
Parameters
DC Power Supply
Specified Temperature Range
Commercial
Symbol
VA
VL
T
A
Min
4.75
1.7
-40
Nom
5.0
3.3
-
Max
5.25
5.25
+85
CS4361
Units
V
V
C
ABSOLUTE MAXIMUM RATINGS
AGND = 0 V; all voltages with respect to ground.
Parameters
DC Power Supply
Input Current, Any Pin Except Supplies
Digital Input Voltage (pin 8, RST)
Digital Input Voltage (all other digital pins)
Ambient Operating Temperature (power applied)
Storage Temperature
Symbol
VA
VL
I
in
V
IND
V
IND
T
op
T
stg
Min
-0.3
-0.3
-
-0.3
-0.3
-55
-65
Max
6.0
VA
±10
VA+0.4
VL+0.4
125
150
Units
V
V
mA
V
V
°C
°C
WARNING:
Operation at or beyond these limits may result in permanent damage to the device. Normal operation
is not guaranteed at these extremes.
5
京公网安备 11010802033920号
EEWORLD
