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MOSA
MS6308
Class AB Stereo Headphone Driver
Class AB Stereo Headphone Driver Low Distortion, Excellent PSRR
FEATURES
Low supply voltage 2.8 to 5.5V 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
APPLICATIONS
CD-RW DVD-RW CD-ROM DVD-ROM MP3 PDA Portable Digital Audio Cross-reference : TDA1308T
DESCRIPTION
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.
BLOCK DIAGRAM
OutA 1 -INA 2 +INA 3 VSS 4
8 VDD 7 OutB 6 -INB 5 +INB
PIN CONFIGURATION
Symbol OUTA -INA +INA VSS +INB -INB OUTB VDD Pin 1 2 3 4 5 6 7 8 Output A Inverting input A Non-inverting input A Negative supply Non-inverting input B Inverting input B Output B Positive supply Description
OUTA 1 -INA 2 +INA 3 VSS 4 8 VDD
MS6308
7 OUTB 6 -INB 5 +INB
REV 1
1
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MOSA
ORDERING INFORMATION
Package 8-Pin SOP 8-Pin SOP 8-Pin SOP (lead free) 8-Pin SOP (lead free) 8-Pin MSOP 8-Pin MSOP 8-Pin MSOP (lead free) 8-Pin MSOP (lead free) Part number MS6308TR MS6308U MS6308GTR MS6308GU MS6308MTR MS6308MU MS6308MGTR MS6308MGU Packaging Marking MS6308 MS6308 MS6308G MS6308G 6308 6308 6308G 6308G
MS6308
Class AB Stereo Headphone Driver
Transport Media 2.5k Units Tape and Reel 100 Units Tube 2.5k Units Tape and Reel 100 Units Tube 3.5k Units Tape and Reel 80 Units Tube 3.5k Units Tape and Reel 80 Units Tube
ABSOLUTE MAXIMUM RATINGS
Symbol VDD VESD TSTG TA TJ TS RTHJA Supply Voltage Electrostatic Handling Storage Temperature Range Operating Ambient Temperature Range Maximum Junction Temperature Soldering Temperature, 10 seconds Thermal Resistance from Junction to Ambient in Free Air SOP8 Parameter Rating 7 -6000 to 6000 -65 to 150 -40 to 85 150 260 210 /W Unit V V
OPERATING RATINGS
Symbol VDD Supply Voltage Parameter Min 2.8 Typ Max 5.5 Unit V
REV 1
2
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MOSA
5V ELECTRICAL CHARACTERISTICS
(Ta=25 Symbol DC Characteristics IQ VO PSRR CS Quiescent current Maximum output voltage swing Power supply rejection ratio Cannel separation Total harmonic distortion plus noise Signal-to-noise ratio Slew rate Maximum output power Unity gain inverting (THD+N)/S<0.1%, 2 ch Vo=0Vpp, 2 channels (THD+N)/S<0.1% Vripple = -20dBV, 100Hz Parameter Conditions
MS6308
Class AB Stereo Headphone Driver
, VDD=5V, VSS=0V, VO=3.5Vpp, f=1kHz, RL=32; unless otherwise specified) Min Typ 3.2 4 70 100 -75 0.017 110 5 124 Max 4 -67 0.044 Unit mA Vpp dB dB dB % dB V/s mW
3.5 100 -
AC Characteristics
THD+N
(THD+N)/S<0.1%
S/N SR Po
2.8V ELECTRICAL CHARACTERISTICS
(Ta=25 Symbol DC Characteristics IQ VO PSRR CS Quiescent current Maximum output voltage swing Power supply rejection ratio Cannel separation Total harmonic distortion plus noise Signal-to-noise ratio Maximum output power (THD+N)/S<0.1%, 2 ch Vo=0Vpp, 2 channels (THD+N)/S<0.1% Vripple = -20dBV, 100Hz 1.8 90 2.3 2 66 92 -70 0.031 100 31 3 -63 0.070 mA Vpp dB dB dB % dB mW , VDD=2.8V, VSS=0V, VO=2Vpp, f=1kHz, RL=32; unless otherwise specified) Parameter Conditions Min Typ Max Unit
AC Characteristics
THD+N
(THD+N)/S<0.1%
S/N Po
REV 1
3
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MOSA
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25 , RL=32; unless otherwise specified)
MS6308
Class AB Stereo Headphone Driver
f=20kHz f=20kHz
f=20kHz
THD+N (%)
THD+N (%)
f=20Hz
f=20Hz
THD+N (%)
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
CHANNEL SEPARATION (dB)
VDD=5V VDD=2.8V VO=2Vpp VDD=3.3V VO=2Vpp
VDD=2.8V VO=2Vpp
VDD=2.8V
THD+N (%)
VDD=3.3V VO=2Vpp
VDD=5V VO=3.5Vpp
PSRR (dB)
VRR=-20dBV Vref=1/2VDD
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N vs. frequency
Channel separation vs. frequency
PSRR vs. frequency
QUIESCENT CURRENT (mA)
SUPPLY VOLTAGE (V)
Quiescent current vs. supply voltage
REV 1
4
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MOSA
APPLICATION INFORMATION
Inverting application
VDD
3.9k
MS6308
Class AB Stereo Headphone Driver
100uF
VOA
RL
10uF
3.9k
ViA
2 1 3
8
VREF (typ. 2.5V) 5 10uF
MS6308
100uF
ViB
3.9k
7 6 4
3.9k
100uF
VOB
RL
Fig.2
Measurement circuit, inverting application
Example of CD application with MS6311
MS6311
BCK WS DATA GND VoR 68pF n.c 1uF VoL VDD 1.2nF 1nF 15k 22k 22k 100uF Headphone (32 )
56k
MS6308
10 Supply 47uF 0.1uF 100k 1uF 100k VREF
f-3dB = 17.5kHz DC gain = 1.5 VDAC out p-p = 1.32V Vout p-p = 1.98V
For VDD = 3.3V
Fig.3
Example of a multiple feedback third order lowpass filter application.
REV 1
5
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MOSA
MP3 digital to analog converting solution. Fig.4, Fig5
MP3 DECODER DAC
MS6308
Class AB Stereo Headphone Driver
Headphone Driver
470pF
20k
MS6313
1 SUNPLUS BCK WS DATA GND VoR CAP VoL VDD 8 7 6 5 10uF 50k
1.2VP-P
50k
0.1uF VRE
F
15k
2 1 3
47uF
1.6VP-P
SPCA751
STMicroelectronics
2 3
STA013
4
10uF 5 0.1uF 15k
MS6308
PHONE JACK 7 6 20k 47uF Headphone (32 )
Supply
10
3V AVDD
47uF 0.1uF
470pF
Fig.4
A first order lowpass filter for DAC output with MS6313
MP3 DECODER
DAC
Headphone Driver
470pF
20k
MS6323
1 SUNPLUS BCK WS DATA GND VoR CAP VoL VDD 8 7 6 5 1uF 50k
1.65VPP
50k
0.1uF VRE
F
20k
2 1 3
47uF
1.65VPP
SPCA751
STMicroelectronics
2 3
STA013
4
10uF 5 0.1uF 20k
MS6308
PHONE JACK 7 6 20k 47uF Headphone (32 )
10
Supply
3.3V AVDD
47uF 0.1uF
470pF
Fig.5
A first order lowpass filter for DAC output with MS6323
REV 1
6
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MOSA
Example of application with MS6610 (current output)
VDD 10uF 0.1uF 1nF
MS6308
Class AB Stereo Headphone Driver
3.9k 22k
100uF VOA
10k BCK 1 5 8 2 1 3 33k 7 VRE
F
8
WS
2
MS6610
MS6308
5 7
100uF
DATA
3
4
6
6
4
1uF
3.9k
100uF VOB
1nF 10k
REV 1
7
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MOSA
EXTERNAL DIMENSIONS
SOP8
MS6308
Class AB Stereo Headphone Driver
8
5
Symbol 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
H
E 1 4
D
A A1 B C D H E e L
L A A1 e B C
MSOP8 (Thermal Pad)
Thermal Pad
Symbol A A1 A2 B C D H E e L D
H
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
A
A2 e B L
A1
C
Note : Die pad exposure size is according to lead frame design.
REV 1
8
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MOSA
TAPE AND REEL (Unit : mm)
2.0 0.30 0.05 4.0 0.05 1.5+0.1/-0.0 DIA
MS6308
Class AB Stereo Headphone Driver
1.75 0.3R MAX 5.5 0.05 12.0 0.3
5.4
3.0 3.6 6.9
8.0 1.5 MIN 0.5 Radius Typical
2.0 1.7
SOP8
2.0 0.30 0.05 4.0
0.05
1.5+0.1/-0.0
1.75 0.3R MAX 5.5 0.05 12.0 0.3 3.3
5.2 1.5 MIN 4.2 3.4 1.6 1.2
8.0 0.3 Typical
MSOP8
REV 1
9
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