MO
SA
MS6334/6335
16-Bit Stereo Audio DAC integrated HP Driver with Volume Control
REV 1.0
1
www.mosanalog.com
16-Bit Stereo Audio DAC Integrated Headphone
Driver with Volume Control
FEATURES
Operation range: 2.7V~5.5V
Volume control range : 6dB to 39dB, 1.5dB/step
Low power consumption, 17mW at V
DD
=3.3V
(Audio code = 0000H)
Mute function
Flexibility power management
No pop-noise
No zero crossing distortion
Audio format : Right justified, I
2
S
Serial control interface : I
2
C, SPI
Output voltage adjusted by the external resisters
Excellent Power Supply Rejection Ratio(PSRR)
Component less
Cost effective
Housed in SSOP20, SSOP16, QFN16 package
APPLICATIONS
Multimedia system, MP3, PDA, Portable Digital Audio.
DESCRIPTION
The MS6334 is a 16-bits voltage-output Digital-to-Analog Converter (DAC) integrated class AB stereo headphone
driver with volume control. It is fabricated in a CMOS process and features extremely low power dissipation, small
package size and easy application. The accuracy of the matched coarse current sources, combined with the unique
symmetrical decoding method, preclude zero-crossing distortion and ensures high quality audio reproduction.
The MS6334 has good feature for portable equipment, these features include the low voltage operation, low power
consumption, flexible power management, component less and small package SSOP20, make the MS6334 ideally
suited for use in portable digital audio equipments.
The MS6335 only has I
2
C interface, the smaller package SSOP16, QFN16 , and other functions are the same as the
MS6334.
BLOCK DIAGRAM
+
-
+
-
AV
DD
AV
SS
DV
DD
DV
SS
CAP
HP-V
DD
HP-V
SS
BCK
WS
DATA
Line-Rin
HP-Rout
Line-Lin
HP-Lout
Volume
Control
Mute
DAC
HP
HP
Control Interface
SCL
MODE
AO/CS
SDA
Line-Lout
Line-Rout
OPAmp
MO
SA
MS6334/6335
16-Bit Stereo Audio DAC integrated HP Driver with Volume Control
REV 1.0
2
www.mosanalog.com
PIN CONFIGURATION
MS6334
Symbol
Pin
Description
HP-V
DD
1
Headphone supply voltage
HP-Rout
2
Right channel headphone output
Line-Rout
3
Right channel line output
Line-Rin
4
Right channel line input
CAP 5
Capacitor
connected
AV
SS
6 Analog
ground
DV
SS
7 Digital
ground
MODE 8
Control interface selection
Low : I
2
C, High : SPI
BCK
9
Audio bit clock input
WS
10
Audio word select input
DATA
11
Audio data input
SCL 12
I
2
C clock input
SPI clock input
SDA 13
I
2
C data input
SPI data input
AO/CS 14
I
2
C address option
SPI chip select
DV
DD
15
Digital supply voltage
AV
DD
16
Analog supply voltage
Line-Lin
17
Left channel line input
Line-Lout
18
Left channel line output
HP-Lout
19
Left channel headphone output
HP-V
SS
20 Headphone
ground
19
18
17
20
2
3
4
1
HP-V
SS
HP-Lout
Line-Lout
Line-Lin
HP-V
DD
HP-Rout
Line-Rout
Line-Rin
15
14
13
16
6
7
8
5
DV
DD
AO/CS
CAP
DV
SS
BCK
12
11
9
10
WS
DATA
MS6334
SCL
SDA
AV
DD
AV
SS
MODE
SSOP20, I
2
C / SPI interface
Note: 1. MODE = low, the interface is I
2
C and pin14 is address option (AO).
AO = low, the address code is 8CH (10001100B).
AO = high, the address code is 88H (10001000B).
2. MODE = high, the interface is SPI and pin14 is chip selection (CS).
MO
SA
MS6334/6335
16-Bit Stereo Audio DAC integrated HP Driver with Volume Control
REV 1.0
3
www.mosanalog.com
MS6335
Symbol
Pin
Description
HP-V
DD
1
Headphone supply voltage
HP-Rout
2
Right channel headphone output
Line-Rout
3
Right channel line output
Line-Rin
4
Right channel line input
CAP 5
Capacitor
connected
V
SS
6 Ground
BCK
7
Audio bit clock input
WS
8
Audio word select input
DATA
9
Audio data input
SCL 10
I
2
C clock input
SDA 11
I
2
C data input
V
DD
12 Supply
voltage
Line-Lin
13
Left channel line input
Line-Lout
14
Left channel line output
HP-Lout
15
Left channel headphone output
HP-V
SS
16 Headphone
ground
Line-Rout
15
14
13
16
2
3
4
1
HP-V
SS
HP-Lout
Line-Lout
Line-Lin
HP-V
DD
HP-Rout
Line-Rin
11
10
9
12
6
7
8
5
SDA
SCL
CAP
BCK
MS6335
DATA
V
DD
V
SS
WS
SSOP16, I
2
C interface
Note: The control interface is I
2
C only. The address code is 8CH (10001100B).
MS6335
Symbol
Pin
Description
Line-Rout
1
Right channel line output
Line-Rin
2
Right channel line input
CAP 3
Capacitor
connected
V
SS
4 Ground
BCK
5
Audio bit clock input
WS
6
Audio word select input
DATA
7
Audio data input
SCL 8
I
2
C clock input
SDA 9
I
2
C data input
V
DD
10 Supply
voltage
Line-Lin
11
Left channel line input
Line-Lout
12
Left channel line output
HP-Lout
13
Left channel headphone output
HP-V
SS
14 Headphone
ground
HP-V
DD
15
Headphone supply voltage
HP-Rout
16
Right channel headphone output
HP-L
out
HP
-R
out
HP
V
SS
Line-Rout
BC
K
DA
T
A
Line-Lout
V
SS
V
DD
Line-Lin
SDA
SC
L
Line-Rin
CAP
HP V
DD
WS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
QFN16, I
2
C interface
Note: The control interface is I
2
C only. The address code is 88H (10001000B).
MO
SA
MS6334/6335
16-Bit Stereo Audio DAC integrated HP Driver with Volume Control
REV 1.0
4
www.mosanalog.com
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
20-Pin SSOP
MS6334TR
MS6334
2.5k Units Tape and Reel
20-Pin SSOP
MS6334U
MS6334
50 Units Tube
20-Pin SSOP (lead free)
MS6334GTR
MS6334G
2.5k Units Tape and Reel
20-Pin SSOP (lead free)
MS6334GU
MS6334G
50 Units Tube
16-Pin SSOP
MS6335TR
MS6335
2.5k Units Tape and Reel
16-Pin SSOP
MS6335U
MS6335
100 Units Tube
16-Pin SSOP (lead free)
MS6335GTR
MS6335G
2.5k Units Tape and Reel
16-Pin SSOP (lead free)
MS6335GU
MS6335G
100 Units Tube
16-Pin QFN (lead free)
MS6335QTR
6335
5k Units Tape and Reel
16-Pin QFN (lead free)
MS6335Q
6335
490 Units Tray
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter Rating
Unit
V
DD
Positive Supply Voltage
6
V
V
ESD
Electrostatic Handling
-3000 to 3000
V
T
STG
Storage Temperature Range
-65 to 150
T
A
Operating Ambient Temperature Range
-40 to 85
T
J
Maximum Junction Temperature
150
T
S
Soldering Temperature, 10 seconds
260
R
THJA
Thermal Resistance from Junction to Ambient in Free Air
SSOP20
SSOP16
QFN16
210
210
210
/W
OPERATING RATINGS
Symbol Parameter Min Typ Max Unit
V
DD
Supply Voltage
2.7
-
5.5
V
MO
SA
MS6334/6335
16-Bit Stereo Audio DAC integrated HP Driver with Volume Control
REV 1.0
5
www.mosanalog.com
3.3V ELECTRICAL CHARACTERISTICS
(Ta=25, V
DD
=3.3V, V
SS
=0V, f=1kHz, R
L
=32
; unless otherwise specified)
Symbol Parameter
Conditions Min
Typ
Max
Unit
DC Characteristics
V
CAP
Voltage at CAP
1.60
1.65
1.70
V
V
DC
Output DC level
1.60
1.65
1.70
V
V
FS
Full scale output voltage
V
FS
=0.02* R
F
*V
DD
V
FS
-
10%
V
FS
V
FS
+10%
V
I
Q
Quiescent current
Audio code 0000H
-
5.4
-
mA
I
PD
Power down current
-
11
-
uA
CAP=2.2uF (100Hz)
58
63
dB
PSRR
Power supply rejection ratio
CAP=10uF (100Hz)
67
72
dB
CS Channel
separation
76 82 - dB
ATT Mute
attenuation
100 110 -
dB
Max gain
-
6
-
dB
A
GA
Gain/Attenuation
Max attenuation
-
-39
-
dB
A
STEP
Gain/Attenuation step
-
1.5
-
dB
E
GA
Gain/Attenuation step error
-
0.3
-
dB
E
IGA
Interchannel gin/attenuation error
-
0.3
-
dB
AC Characteristics
Res Resolution
-
- 16 bits
- -65 -60 dB
THD+N
Total harmonic distortion plus
noise
- 0.056 0.1 %
S/N Signal-to-noise
ratio
86 92 - dB
Po
Maximum output power
(THD+N)/S < 0.1
%
, 2 ch
- 52 - mW
Vo
Maximum output voltage swing
(THD+N)/S < 0.1
%
-
2.6
-
Vpp
Bus Characteristics
V
IH
Bus high input level
-
-
0.7V
DD
V
V
IL
Bus low input level
0.3V
DD
- - V
Note:
R
F
: Feedback resistor
PDF 
ZIP