MOSA MS6308 Class ab stereo headphone driver low distortion, excellent psrr Datasheet

MOSA
MS6308
Class AB Stereo Headphone Driver
Class AB Stereo Headphone Driver
Low Distortion, Excellent PSRR
FEATURES
APPLICATIONS
‧Low supply voltage 2.8 to 6.5V
‧No switch-ON/OFF clicks
‧Excellent power supply ripple rejection
‧Low power consumption
‧Short-circuit resistant
‧High performance :
- high SNR
- high slew rate
- low distortion
‧Large output voltage swing
‧Space saving package SOP8, MSOP8
‧CD-RW、DVD-RW
‧CD-ROM、DVD-ROM
‧MP3、PDA
‧Portable Digital Audio
‧Cross-reference :
TDA1308T
DESCRIPTION
BLOCK DIAGRAM
The MS6308 is an integrated class AB stereo headphone
driver contained in an SO8 package. The device is
fabricated in a CMOS process and has been primarily
developed for portable digital audio applications.
MS6308 is pin and function compatible with the Philips,
TDA1308T.
OutA 1
8 VDD
-INA 2
-
+INA 3
+
7 OutB
VSS 4
-
6 -INB
+
5 +INB
PIN CONFIGURATION
Symbol
Pin
Description
OUTA
1
Output A
-INA
2
Inverting input A
+INA
3
Non-inverting input A
VSS
4
Negative supply
+INB
5
Non-inverting input B
-INB
6
Inverting input B
OUTB
7
Output B
VDD
8
Positive supply
REV 2
8 VDD
OUTA 1
-INA 2
+INA 3
VSS 4
1/8
MS6308
7 OUTB
6 -INB
5 +INB
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MOSA
MS6308
Class AB Stereo Headphone Driver
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
8-Pin SOP (lead free)
MS6308GTR
MS6308G
2.5k Units Tape and Reel
8-Pin SOP (lead free)
MS6308GU
MS6308G
100 Units Tube
8-Pin MSOP (lead free)
MS6308MGTR
6308G
3.5k Units Tape and Reel
8-Pin MSOP (lead free)
RoHS Compliance
MS6308MGU
6308G
80 Units Tube
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Rating
Unit
6.5
V
-6000 to 6000
-65 to 150
V
℃
-40 to 85
℃
VDD
Supply Voltage
VESD
Electrostatic Handling
TSTG
Storage Temperature Range
TA
Operating Ambient Temperature Range
TJ
Maximum Junction Temperature
150
℃
TS
Soldering Temperature, 10 seconds
Thermal Resistance from Junction to Ambient in Free Air
MSOP (enhance thermal pad)
SOP8
260
℃
50
210
℃/W
RTHJA
OPERATING RATINGS
Symbol
VDD
REV 2
Parameter
Supply Voltage
2/8
Min
Typ
Max
Unit
2.8
-
6.5
V
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MOSA
MS6308
Class AB Stereo Headphone Driver
5V ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=5V, VSS=0V, VO=3.5Vpp, f=1kHz, RL=32; unless otherwise specified)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
DC Characteristics
IQ
Quiescent current
Vo=0Vpp, 2 channels
VO
Maximum output voltage swing
(THD+N)/S<0.1%
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
CS
Cannel separation
-
3.2
4
mA
3.5
4
-
Vpp
-
70
-
dB
-
100
-
dB
-
-75
-67
dB
AC Characteristics
THD+N
Total harmonic distortion plus
noise
S/N
Signal-to-noise ratio
SR
Slew rate
Po
Maximum output power
(THD+N)/S<0.1%
-
0.017
0.044
%
100
110
-
dB
Unity gain inverting
-
5
-
V/s
(THD+N)/S<0.1%, 2 ch
-
124
-
mW
Min
Typ
Max
Unit
2.8V ELECTRICAL CHARACTERISTICS
(Ta=25℃, VDD=2.8V, VSS=0V, VO=2Vpp, f=1kHz, RL=32; unless otherwise specified)
Symbol
Parameter
Conditions
DC Characteristics
IQ
Quiescent current
Vo=0Vpp, 2 channels
VO
Maximum output voltage swing
(THD+N)/S<0.1%
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
CS
Cannel separation
-
2.3
3
mA
1.8
2
-
Vpp
-
66
-
dB
-
92
-
dB
-
-70
-63
dB
AC Characteristics
THD+N
Total harmonic distortion plus
noise
S/N
Signal-to-noise ratio
Po
Maximum output power
REV 2
(THD+N)/S<0.1%
(THD+N)/S<0.1%, 2 ch
3/8
-
0.031
0.070
%
90
100
-
dB
-
31
-
mW
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MOSA
MS6308
Class AB Stereo Headphone Driver
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25℃, RL=32; unless otherwise specified)
f=20kHz
f=20kHz
f=20Hz
THD+N (%)
f=20Hz
THD+N (%)
THD+N (%)
f=20kHz
f=20Hz
f=1kHz
f=1kHz
f=1kHz
VDD=5V
VDD=3.3V
VDD=2.8V
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=5V
VO=3.5Vpp
VDD=3.3V
VO=2Vpp
VDD=5V
VO=3.5Vpp
VDD=5V
VDD=2.8V
VO=2Vpp
VDD=3.3V
VO=2Vpp
VDD=2.8V
PSRR (dB)
THD+N (%)
VDD=2.8V
VO=2Vpp
CHANNEL SEPARATION (dB)
VDD=3.3V
VRR=-20dBV
Vref=1/2VDD
FREQUENCY (Hz)
FREQUENCY (Hz)
Channel separation vs. frequency
PSRR vs. frequency
QUIESCENT CURRENT (mA)
FREQUENCY (Hz)
THD+N vs. frequency
SUPPLY VOLTAGE (V)
Quiescent current vs. supply voltage
REV 2
4/8
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MOSA
MS6308
Class AB Stereo Headphone Driver
APPLICATION INFORMATION
Inverting application
VDD
100uF
3.9k
10uF
VOA
RL
3.9k
2
ViA
8
1
3
VREF
100uF
MS6308
(typ. 2.5V)
5
10uF
ViB
7
3.9k
6
4
100uF
3.9k
VOB
RL
Fig.2
Measurement circuit, inverting application
Example of CD application with MS6311
MS6311
BCK
56k
VoR
68pF
n.c
WS
1uF
DATA
GND
15k
22k
22k
100uF
VoL
1.2nF
VDD
1nF
Headphone
(32Ω)
MS6308
10Ω
100k
Supply
47uF
100k
f-3dB = 17.5kHz
DC gain = 1.5
VDAC out p-p = 1.32V
Vout p-p = 1.98V
Fig.3
REV 2
VREF
0.1uF
1uF
For VDD = 3.3V
Example of a multiple feedback third order lowpass filter application.
5/8
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MOSA
MS6308
Class AB Stereo Headphone Driver
MP3 digital to analog converting solution. Fig.4, Fig5
DAC
Headphone Driver
470pF
20k
MS6313
1
BCK
VoR
8
2
WS
CAP
7
3
DATA
VoL
6
4
GND
VDD
5
1.2VP-P
0.1uF
15k
2
47uF
1
50k
VREF
10uF
50k
MS6308
10uF
PHONE JACK
5
0.1uF
Supply
15k
47uF
7
Headphone
(32Ω)
6
3V
10Ω
1.6VP-P
3
20k
AVDD
47uF
470pF
0.1uF
Fig.4 A first order lowpass filter for DAC output with MS6313
DAC
Headphone Driver
470pF
20k
MS6323
1
BCK
VoR
8
2
WS
CAP
7
3
DATA
VoL
6
4
GND
VDD
5
1.65VPP
0.1uF
20k
2
1
50k
1uF
50k
VREF
PHONE JACK
5
Supply
10Ω
3.3V
1.65VPP
MS6308
10uF
0.1uF
47uF
3
20k
7
47uF
Headphone
(32Ω)
6
20k
AVDD
47uF
470pF
0.1uF
Fig.5 A first order lowpass filter for DAC output with MS6323
REV 2
6/8
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MOSA
MS6308
Class AB Stereo Headphone Driver
EXTERNAL DIMENSIONS
SOP8
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
MSOP8 (Thermal Pad)
Thermal Pad
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
B
L
C
Note : Die pad exposure size is according to lead frame design.
REV 2
7/8
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MOSA
MS6308
Class AB Stereo Headphone Driver
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
8/8
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