MOSA MS6544 Stereo headphone driver, 0db / 6db gain low voltage, internal mute function no popping noise when power on / off Datasheet

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
APPLICATIONS
‧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
‧MP3, PDA
‧Portable Digital Audio.
‧CD-ROM, DVD-ROM, CD-RW, DVD-RW
‧Cross-reference :
6dB: BH3544F, NJM2169
0dB: BH3541F, NJM2168
DESCRIPTION
BLOCK DIAGRAM
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.
OutA
1
MUTE
2
INA
3
6dB
(0dB)
8 VDD
6dB
(0dB)
7 OutB
MUTE
BIAS
90k
(180k)
90k
(180k)
6 VREF
4
5 INB
OUTA 1
8 VDD
VSS
PIN CONFIGURATION
Symbol
Pin
Description
OutA
1
Mute
2
INA
3
Output A
Mute control
(Low: mute on, High: mute off)
Input A
VSS
4
Negative supply
INB
5
Input B
VREF
6
Reference volatge
OutB
7
Output B
VDD
8
Positive supply
REV 2
MUTE 2
INA 3
VSS 4
1/9
MS6544
MS6541
7 OUTB
6 VREF
5 INB
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
8-Pin SOP
MS6544GTR
MS6544G
2.5k Units Tape and Reel
8-Pin SOP
MS6544GU
MS6544G
100 Units Tube
8-Pin MSOP
MS6544MGTR
MS6544G
3.5k Units Tape and Reel
8-Pin MSOP
MS6544MU
MS6544G
80 Units Tube
8-Pin SOP
MS6541GTR
8-Pin SOP
MS6541GU
Lead free, RoHS Compliance
MS6541G
2.5k Units Tape and Reel
MS6541G
100 Units Tube
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Rating
Unit
6.5
V
-4500 to 4500
VDD
Supply Voltage
VESD
Electrostatic Handling
TSTG
Storage Temperature Range
-65 to 150
V
℃
TA
Operating Ambient Temperature Range
-40 to 85
℃
TJ
Maximum Junction Temperature
150
℃
TS
Soldering Temperature, 10 seconds
260
℃
RTHJA
Thermal Resistance from Junction to Ambient in Free Air
SOP8
210
℃/W
OPERATING RATINGS
Symbol
VDD
REV 2
Parameter
Supply Voltage
2/9
Min
Typ
Max
Unit
2.7
-
6.5
V
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
5V ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=5V, VSS=0V, Vo=2Vpp, f=1kHz, AV=1, RL=32; unless otherwise specified)
Min
Typ
Conditions
Symbol
Parameter
Max
Unit
DC Characteristics
Mute On
Mute Off
3.7
1.5
3.9
1.6
4.1
mA
mA
Power supply rejection ratio
Mute on
Mute off
MS6544 : 6dB
MS6541 : 0dB
Vripple = -20dBV, 100Hz
0
3.3
5
-1
57
6
0
60
1
VDD
7
1
-
V
V
dB
dB
dB
CS
Channel separation
Vo=0dBV
100
117
-
dB
ATT
Mute attenuation
Vo=0dBV
100
115
-
dB
IQ
Quiescent current
VTM
Mute control voltage
GVC
Voltage Gain
PSRR
Vo=0Vpp
2 channels
AC Characteristics
S/N
Signal-to-noise
Vo=4Vpp
95
99
-
dB
THD+N
Total harmonic distortion
plus noise
Vo=2Vpp
-
-64
-62
dB
SR
Slew rate
Unity gain inverting
-
5
-
V/s
Po
Maximum output power
(THD+N)/S<0.1, 2 ch
130
140
-
mW
VO
Maximum output voltage swing
(THD+N)/S<0.1
4.1
4.2
-
Vpp
Max
Unit
1.4
3.5
mA
mA
3.3V ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=3.3V, VSS=0V, Vo=2Vpp, f=1kHz, AV=1, RL=32; unless otherwise specified)
Min
Typ
Conditions
Symbol
Parameter
DC Characteristics
-
1.3
3.3
Mute on
0
-
1
V
Mute off
2.7
-
VDD
V
Power supply rejection ratio
Vripple = -20dBV, 100Hz
57
60
-
dB
CS
Channel separation
Vo=0dBV
100
115
-
dB
ATT
Mute attenuation
Vo=0dBV
100
115
-
dB
93
97
-
dB
-
-64
-62
dB
IQ
Quiescent current
VTM
Mute control voltage
PSRR
Vo=0Vpp
2 channels
Mute On
Mute Off
AC Characteristics
S/N
Signal-to-noise
Vo=2.6Vpp
THD+N
Total harmonic distortion
plus noise
Vo=2Vpp
Po
Maximum output power
(THD+N/S)<0.1, 2 ch
49
52
-
mW
VO
Maximum output voltage swing
(THD+N)/S<0.1
2.5
2.6
-
Vpp
REV 2
3/9
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
2.7V ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=2.7V, VSS=0V, Vo=2Vpp, f=1kHz, AV=1, RL=32; unless otherwise specified)
Min
Typ
Conditions
Symbol
Parameter
Max
Unit
DC Characteristics
-
1.2
3.0
1.3
3.2
mA
mA
Mute on
0
-
1
V
Mute off
2.5
-
VDD
V
57
60
-
dB
100
112
-
dB
100
115
-
dB
Vo=0Vpp
2 channels
Mute On
Mute Off
IQ
Quiescent current
VTM
Mute control voltage
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
CS
Channel separation
Vo=-3dBV
ATT
Mute attenuation
Vo=-3dBV
AC Characteristics
S/N
Signal-to-noise
Vo=2Vpp
92
96
-
dB
THD+N
Total harmonic distortion
plus noise
Vo=2Vpp
-
-64
-62
dB
Po
Maximum output power
(THD+N/S)<0.1%, 2 ch
28
31
-
mW
VO
Maximum output voltage swing
(THD+N)/S<0.1%
1.9
2
-
Vpp
REV 2
4/9
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25℃, RL=32; unless otherwise specified)
f=1kHz
f=1kHz
f=20Hz
f=20kHz
THD+N (%)
f=20kHz
THD+N (%)
THD+N (%)
f=20kHz
f=1kHz
f=20Hz
f=20Hz
VDD=2.7V
OUTPUT VOLTAGE (dBV)
OUTPUT VOLTAGE (dBV)
OUTPUT VOLTAGE (dBV)
THD+N vs. output voltage
THD+N vs. output voltage
THD+N vs. output voltage
VDD=3.3V
VIN=0dBV
VDD=2.7V
VIN=-3dBV
VDD=2.7V
VIN=-3dBV
VDD=3.3V
VIN=-0dBV
VDD=5V
VIN=0dBV
VDD=5V
PSRR (dB)
VDD=5V
VIN=0dBV
QUIESCENT CURRENT (mA)
VDD=3.3V
MUTE ATTENUATION (dB)
CHANNEL SEPARATION (dB)
VDD=5V
VDD=2.7V
VDD=3V
VRR=-20dBV
Bias C=47uF
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
Channel separation vs. frequency
Mute Attenuation vs. frequency
PSRR vs. frequency
Mute Off
Mute On
SUPPLY VOLTAGE (V)
Quiescent current vs. supply voltage
REV 2
5/9
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
MUTE FUNCTION
Mute operation
A
A: Mute period
Set Mute = Low to prevent the popping
noise when power is turned on and off.
A
VDD
B
C
B: Mute release time
The time constant is decided by R and
C of pin 2.
Out
C: Mute start time
The time constant like Mute release time.
VTM
Mute function to prevent the popping noise
Conditions :
VDD = 5V, Vo =2Vpp
VO
Process :
Mute On, VDD On, Mute Off
Mute On, VDD Off
Voltage (V)
VDD
VO loading
Time (Sec)
Conditions :
VDD = 2.7V, Vo =2Vpp
VDD
Process :
Mute On, VDD On, Mute Off
Mute On, VDD Off
VO
VO loading
REV 2
6/9
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
APPLICATION INFORMATION
Low voltage application
10
VDD=3.3V
0.1u
Headphone
1
8
6dB
100k
H : Active
L : Mute
100u
47u
32
VTM
1u
1u
Headphone
47u
32
7
MUTE
1u
90k
VINA
2
6dB
3
BIAS
90k
200p
6
90k
4
1u
90k
5
VINB
200p
f-3dB = 17.6kHz
DC gain = 1
Fig.1
The 1st order low pass filter for MP3 solution with MS6544.
10
VDD=3.3V
0.1u
Headphone
32
1
VTM
1u
1u
VINA
8
6dB
(0dB)
100k
H : Active
L : Mute
100u
47u
2
6dB
(0dB)
Headphone
47u
32
7
MUTE
1u
3
BIAS
90k
(180k)
6
90k
(180k)
4
5
1u
VINB
DC gain = 2 for MS6544
DC gain = 1 for MS6541
Fig.2
REV 2
The basic application.
7/9
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
EXTERNAL DIMENSIONS
8
5
Symbol
H
E
1
A
A1
B
C
D
H
E
e
L
4
D
Dimension in mm
Min
Max
1.35
1.75
0.10
0.25
0.33
0.51
0.19
0.25
4.80
5.00
5.80
6.20
3.80
4.00
1.27 BSC
0.40
1.27
Dimension in inch
Min
Max
0.0532 0.0688
0.0040 0.0098
0.013
0.020
0.0075 0.0098
0.1890 0.1968
0.2284 0.2440
0.1497 0.1574
0.050 BSC
0.016
0.050
L
A
A1
e
B
C
SOP8
Symbol
H
A
A1
A2
B
C
D
H
E
e
L
E
Dimension in mm Dimension in inch
Min
Max
Min
Max
0.81
1.12
0.032
0.048
0.05
0.15
0.002
0.006
0.76
0.86
0.030
0.038
0.28
0.38
0.011
0.015
0.13
0.23
0.005
0.009
2.90
3.10
0.114
0.122
4.70
5.10
0.185
0.201
2.90
3.10
0.114
0.122
0.65
0.026
0.40
0.66
0.016
0.026
D
A
A2
A1
e
L
B
C
MSOP8
REV 2
8/9
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MOSA
MS6544/6541
Class AB Stereo Headphone Driver with Mute
TAPE AND REEL (Unit : mm)
2.0
0.05
0.30
0.05
1.5+0.1/-0.0 DIA
4.0
1.75
0.3R MAX
5.5
0.05
12.0 0.3
5.4
3.0
3.6
8.0
1.5 MIN
6.9
0.5 Radius Typical
2.0 1.7
SOP8
2.0
0.30
0.05
0.05
1.5+0.1/-0.0
4.0
1.75
0.3R MAX
5.5
0.05
12.0 0.3
3.3
5.2
8.0
1.5 MIN
0.3 Typical
4.2
3.4
1.6 1.2
MSOP8
REV 2
9/9
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