MS6544_1 Datasheet, PDF (1/9 Pages) MOSA ELECTRONICS – Stereo Headphone Driver, 0dB / 6dB Gain Low Voltage, Internal Mute Function No Popping Noise When Power On / Off

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 6.5V
‧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
6dB
(0dB)
MUTE
INA 3
V_SS 4
90k
(180k)
6dB
(0dB)
8 V_DD
7 OutB
BIAS
90k
(180k)
6 V_REF
5 INB
PIN CONFIGURATION
Symbol Pin
OutA
1
Mute
2
INA
3
V_SS
4
INB
5
V_REF
6
OutB
7
V_DD
8
Description
Output A
Mute control
(Low: mute on, High: mute off)
Input A
Negative supply
Input B
Reference volatge
Output B
Positive supply
REV 2
1/9
OUTA 1
MUTE 2
INA 3
V_SS 4
MS6544
MS6541
8 V_DD
7 OUTB
6 V_REF
5 INB
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