MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
Stereo Headphone Driver, 0dB / 6dB Gain
Low Voltage, Internal Mute Function
No Popping Noise When Power On / Off
FEATURES
‧Low
supply voltage 2.7 to 5.5V
‧Internal
mute function
‧No
popping noise
‧Fixed
gain of 6 dB for MS6544
Fixed gain of 0 dB for MS6541
‧High
SNR , Slew rate
‧Low
distortion
‧Excellent
power supply ripple rejection
‧Low
power consumption
‧Large
output voltage swing
APPLICATIONS
‧MP3,
PDA
‧Portable
Digital Audio.
‧CD-ROM,
DVD-ROM, CD-RW, DVD-RW
‧Cross-reference
:
6dB: BH3544F, NJM2169
0dB: BH3541F, NJM2168
DESCRIPTION
The MS6544 is an integrated class AB stereo headphone
driver contained in an SO8 package. The MS6544 has
fixed gain of 6dB and the MS6541 has fixed gain of
0dB. The mute function to prevent popping sounds when
the power is turned on and off. It has good performance
at low voltage operation, the MS6544/41 ideally suited
for use in portable digital audio equipment.
BLOCK DIAGRAM
OutA
1
MUTE
2
INA
3
V
SS
4
6dB
(0dB)
MUTE
6dB
(0dB)
8
V
DD
7
OutB
BIAS
90k
(180k)
6
BIAS
5
INB
90k
(180k)
PIN CONFIGURATION
Symbol
OutA
Mute
INA
V
SS
INB
BIAS
OutB
V
DD
REV 1
Pin
1
2
3
4
5
6
7
8
Description
Output A
Mute control
(Low: mute on, High: mute off)
Input A
Negative supply
Input B
Bias (connect CAP)
Output B
Positive supply
1
www.mosanalog.com.tw
OUTA
1
MUTE
2
INA
3
V
SS
4
8
V
DD
MS6544
MS6541
7
OUTB
6
BIAS
5
INB