MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier
Plus Stereo Headphone Function
MOSA
16-Bit Stereo Audio DAC & Mono 1.8W Power
Amplifier Plus Stereo Headphone Function
FEATURES
‧Operation range: 2.7V~6.5V
‧16-bit resolution audio DAC
‧Output mode : Speaker( BTL)/Headphone(SE)
‧Output power, THD+N=1%
‧Fast setting time permits 2*, 4*, and 8* oversampling
(serial input) or double speed operation at 4*
oversampling
‧Audio format:I2S, Right justified。
‧The minimum HIGH voltage of digital clocks(WS,DATA
and BCK)and the control inputs can be 1.6V at Vdd = 5V.
‧Excellent Power Supply Rejection Ratio(PSRR)
‧Low power consumption
‧Shutdown function
Mode RL 5V
3.3V
0.72W
0.52W
125mW 85mW
43mW 25mW
2.7V
450mW
330mW
4Ω
8Ω
8Ω
1.8W
1.2W
0.3W
BTL
SE
32Ω 90mW
‧Output voltages can be adjusted by the external resisters
‧Housed in 24 pin SSOP(150mil), QFN(4x4x0.8)packages
‧Component less
‧No zero crossing distortion
APPLICATIONS
‧Multimedia system, Portable Digital Audio.
DESCRIPTION
The MS6337 is a 16-bits voltage-output Digital-to-Analog Converter (DAC) integrated class AB stereo headphone
driver and mono speaker power amplifier. It can drive 1.8W of continuous average power into a mono 4Ω bridged-tied
(BTL) speaker or 2 * 90mW into stereo 32Ω single ended (SE) headphone. The 16-bit DAC supports popular formats
as I2S, Right Justified.
The MS6337 is with the excellent Power Supply Rejection Ratio(PSRR) 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 MS6337 ideally suited for use in digital
audio equipment.
BLOCK DIAGRAM
LIN
DVDD DVss
Supply
Shutdown control
SD Mode SD Status
MS6337
VDD
0
0
1
1
0
1
0
1
Shutdown
Active
Active
400K
-
+
BCK
WS
A1
LOUT/BTL-
BTL+
Shutdown
DAC
400K
DATA
Format control
FORMAT Status
-
+
FORMAT(I2S/RJF)
DAC_SD
A2
VDD
DAC
Shutdown
0
1
I2S
RJF
400K
-
+
B1
ROUT
DAC control
Status
Mono / Stereo Mode
Switching Circuitry
400K
HPIN
DACSD
0
1
Shutdown
Active
SD
SD_MODE
CAP
Click/Pop
Reduction
Bias
Power Amplifier
Supply
CAP control
Status
Supply
390K
CAP_DC
0
1
Discharge
Charge
AVDD
AVSS
CAP_DC
RIN PVDDL PVDDR PVSSL PVSSR
REV 2
1/20
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