MO
SA
MS6332
16-Bit Stereo Audio DAC & Headphone Driver
REV 1.0
1
www.mosanalog.com.tw
16-Bit Stereo Audio DAC & Headphone Driver
Mute and Power Down Function
Component Less, Low Cost
FEATURES
Operation range: 2.7V~5.5V
Excellent Power Supply Rejection Ratio(PSRR)
No pop-noise
Mute and Power Down function
Controlled by audio input pins
(BCK, WS)
Component less
No zero crossing distortion
Fast setting time permits 2*, 4*, and 8* oversampling
(serial input) or double speed operation at 4*
oversampling
Compatible with most of the Japanese input formats;
time multiplexed, two's complement, TTL input level
Cost efficient
Housed in 8 pin SOP package
APPLICATIONS
Multimedia system, MP3, PDA, Portable Digital Audio.
DESCRIPTION
The MS6332 is an integrated 16-bits voltage-output Digital-to-Analog Converter (DAC) and class AB stereo
headphone driver. The MS6332 is with the excellent Power Supply Rejection Ratio(PSRR). 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. These unique features, combined with its exceptional
performance, make the MS6332 ideally suited for use in digital audio equipment.
BLOCK DIAGRAM
+
-
+
-
V
DD
GND
CAP
BCK
WS
DATA
OUTR
OUTL
DAC
HP
MO
SA
MS6332
16-Bit Stereo Audio DAC & Headphone Driver
REV 1.0
2
www.mosanalog.com.tw
PIN CONFIGURATION
Symbol Pin
Description
V
DD
1
Positive supply voltage
OUTL
2
Left channel output
OUTR
3
Right channel output
CAP 4
Capacitor
BCK
5
Bit clock input
WS
6
Word select input
DATA 7
Data
input
GND 8
Ground
7
6
5
8
2
3
4
1
MS6332
GND
DATA
WS
BCK
V
DD
OUTL
OUTR
CAP
Pin 4 : Capacitor = 1uF~10uF (ripple rejection)
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
8-Pin SOP
MS6332TR
MS6332
2.5k Units Tape and Reel
8-Pin SOP
MS6332U
MS6332
100 Units Tube
8-Pin SOP (lead free)
MS6332GTR
MS6332G
2.5k Units Tape and Reel
8-Pin SOP (lead free)
MS6332GU
MS6332G
100 Units Tube
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
SOP8
210
/W
OPERATING RATINGS
Symbol Parameter Min Typ Max Unit
V
DD
Supply Voltage
2.7
-
5.5
V
MO
SA
MS6332
16-Bit Stereo Audio DAC & Headphone Driver
REV 1.0
3
www.mosanalog.com.tw
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
=0.023663* 24
*V
DD
- 1.87 - V
I
Q
Quiescent current
-
3.6
4
mA
I
PD
Power down current
No digital input signal
-
0.35
1
uA
CAP=2.2uF (100Hz)
50
55
-
dB
PSRR
Power supply rejection ratio
CAP=10uF (100Hz)
61
66
-
dB
CS Channel
separation
70 75 - dB
ATT Mute
attenuation
62 67
-
dB
AC Characteristics
Res Resolution
-
- 16 bits
- -60 -56 dB
THD+N
Total harmonic distortion plus
noise
- 0.1
0.158
%
S/N Signal-to-noise
ratio
86 92 - dB
Po
Maximum output power
(THD+N)/S < 0.1
%
49 52 - mW
Vo
Maximum output voltage swing
(THD+N)/S < 0.1
%
2.5
2.6
-
Vpp
MO
SA
MS6332
16-Bit Stereo Audio DAC & Headphone Driver
REV 1.0
4
www.mosanalog.com.tw
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25, R
L
=32
, sampling rate=4fs; unless otherwise specified)
P
O
WE
R DOWN CURRE
NT (u
A
)
SUPPLY VOLTAGE (V)
QUIE
S
C
E
N
T CURRE
NT (mA
)
SUPPLY VOLTAGE (V)
THD+N (%)
SUPPLY VOLTAGE (V)
Power down current vs. supply voltage
Quiescent current vs. supply voltage
THD+N vs. supply voltage
f=1kHz
PSR
R
(
d
B)
FREQUENCY (Hz)
PSR
R
(
d
B)
FREQUENCY (Hz)
PSR
R
(
d
B)
FREQUENCY (Hz)
PSRR vs. frequency
PSRR vs. frequency
PSRR vs. frequency
CAP=10uF
CAP=10uF
CAP=10uF
CAP=2.2uF
CAP=2.2uF
CAP=2.2uF
V
DD
=5V
V
RR
=-20dBV
V
DD
=3.3V
V
RR
=-20dBV
V
DD
=2.7V
V
RR
=-20dBV
MUTE ATTENUATION (dB)
SUPPLY VOLTAGE (V)
C
H
A
N
N
E
L SEPAR
ATION
(
d
B)
SUPPLY VOLTAGE (V)
THD+N (%)
FREQUENCY (Hz)
Mute attenuation vs. supply voltage
Channel separation vs. supply voltage
THD+N vs. frequency
V
DD
=5V
V
DD
=3.3V
V
DD
=2.7V
f=1kHz
MO
SA
MS6332
16-Bit Stereo Audio DAC & Headphone Driver
REV 1.0
5
www.mosanalog.com.tw
TIMING AND DATA FORMAT
The MS6332 accepts input serial data formats of 16-bit word length. Left and right data words are time
multiplexed. The MSB must always be first. The format of data input is shown in Figs. 1 and 2.
RIGHT
WS
BCK
DATA
LSB
MSB
t
r
t
HB
t
f
t
cr
t
LB
t
HW
t
SW
LEFT
t
SD
t
HD
Fig.1 Timing and input signals.
0
1
2
15
14
13
2
1
0
MSB
LSB
15
14
13
2
1
0
MSB
LSB
RIGHT
LEFT
WS
BCK
DATA
Fig.2 Format of input signals.
Data format (BCK, WS, DATA)
Symbol Parameter
Conditions Min
Typ
Max
Unit
V
IL
Input LOW level
-
-
0.3V
DD
V
V
IH
Input HIGH level
0.7V
DD
- - V
l
I
IL
l
Input Leakage Current LOW
-
-
10
A
l
I
IH
l
Input Leakage Current HIGH
-
-
10
A
f
BCK
Input Clock Frequency
-
-
18.4
MHz
BR
Bit Rate Data Input
-
-
18.4
Mbits/s
f
WS
Word Select Input
-
-
384
kHz
t
r
Rise Time
-
-
12
ns
t
f
Fall Time
-
-
12
ns
t
C
r
Bit Clock Cycle Time
54
-
-
ns
t
HB
Bit Clock High Time
15
-
-
ns
t
LB
Bit Clock Low Time
15
-
-
ns
t
SD
Data Set-up Time
12
-
-
ns
t
HD
Data Hold Time to Bit Clock
2
-
-
ns
t
HW
Word Select Hold Time
2
-
-
ns
t
SW
Word Select Set-up Time
12
-
-
ns
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