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Электронный компонент: MS6308U

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MO
SA
MS6308
Class AB Stereo Headphone Driver
REV 1
1
www.mosanalog.com.tw
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-RWDVD-RW
CD-ROMDVD-ROM
MP3PDA
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
7
6
5
8
2
3
4
1
+INB
V
DD
OutB
-INB
OutA
-INA
+INA
V
SS
-
+
+
-



PIN CONFIGURATION
Symbol Pin
Description
OUTA 1
Output
A
-INA
2
Inverting input A
+INA
3
Non-inverting input A
V
SS
4 Negative
supply
+INB
5
Non-inverting input B
-INB
6
Inverting input B
OUTB 7
Output
B
V
DD
8 Positive
supply
7
6
5
8
2
3
4
1
MS6308
V
DD
OUTB
-INB
+INB
OUTA
-INA
+INA
V
SS
MO
SA
MS6308
Class AB Stereo Headphone Driver
REV 1
2
www.mosanalog.com.tw
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
8-Pin SOP
MS6308TR
MS6308
2.5k Units Tape and Reel
8-Pin SOP
MS6308U
MS6308
100 Units Tube
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
MS6308MTR
6308
3.5k Units Tape and Reel
8-Pin MSOP
MS6308MU
6308
80 Units Tube
8-Pin MSOP (lead free)
MS6308MGTR
6308G
3.5k Units Tape and Reel
8-Pin MSOP (lead free)
MS6308MGU
6308G
80 Units Tube



ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter Rating
Unit
V
DD
Supply
Voltage
7
V
V
ESD
Electrostatic Handling
-6000 to 6000
V
T
STG
Storage Temperature Range
-65 to 150
T
A
Operating Ambient Temperature Range
-40 to 85
T
J
Maximum Junction Temperature
150
T
S
Soldering Temperature, 10 seconds
260
R
THJA
Thermal Resistance from Junction to Ambient in Free Air
SOP8
210
/W



OPERATING RATINGS
Symbol Parameter Min Typ Max Unit
V
DD
Supply Voltage
2.8
-
5.5
V



















MO
SA
MS6308
Class AB Stereo Headphone Driver
REV 1
3
www.mosanalog.com.tw
5V ELECTRICAL CHARACTERISTICS
(Ta=25, V
DD
=5V, V
SS
=0V, V
O
=3.5Vpp, f=1kHz, R
L
=32
; unless otherwise specified)
Symbol Parameter
Conditions Min
Typ
Max
Unit
DC Characteristics
I
Q
Quiescent current
Vo=0Vpp, 2 channels
-
3.2
4
mA
V
O
Maximum output voltage swing
(THD+N)/S<0.1%
3.5
4
-
Vpp
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
-
70
-
dB
CS Cannel
separation
- 100 - dB
AC Characteristics
- -75 -67 dB
THD+N
Total harmonic distortion plus
noise
(THD+N)/S<0.1%
- 0.017
0.044 %
S/N Signal-to-noise
ratio
100 110 - dB
SR
Slew rate
Unity gain inverting
-
5
-
V/
s
Po
Maximum output power
(THD+N)/S<0.1%, 2 ch
- 124 - mW



2.8V ELECTRICAL CHARACTERISTICS
(Ta=25, V
DD
=2.8V, V
SS
=0V, V
O
=2Vpp, f=1kHz, R
L
=32
; unless otherwise specified)
Symbol Parameter
Conditions Min
Typ
Max
Unit
DC Characteristics
I
Q
Quiescent current
Vo=0Vpp, 2 channels
-
2.3
3
mA
V
O
Maximum output voltage swing
(THD+N)/S<0.1%
1.8
2
-
Vpp
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
-
66
-
dB
CS Cannel
separation
- 92 - dB
AC Characteristics
- -70 -63 dB
THD+N
Total harmonic distortion plus
noise
(THD+N)/S<0.1%
- 0.031
0.070 %
S/N Signal-to-noise
ratio
90 100 - dB
Po
Maximum output power
(THD+N)/S<0.1%, 2 ch
- 31 - mW
















MO
SA
MS6308
Class AB Stereo Headphone Driver
REV 1
4
www.mosanalog.com.tw
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25, R
L
=32
; unless otherwise specified)
THD+N (%)
OUTPUT VOLTAGE (dBV)
THD+N (%)
OUTPUT VOLTAGE (dBV)
THD+N (%)
OUTPUT VOLTAGE (dBV)
THD+N vs. output voltage
THD+N vs. output voltage
THD+N vs. output voltage
f=20kHz
f=20kHz
f=20kHz
f=20Hz
f=20Hz
f=20Hz
f=1kHz
f=1kHz
f=1kHz
V
DD
=5V
V
DD
=2.8V
V
DD
=3.3V



THD+N (%)
FREQUENCY (Hz)
C
H
A
N
N
E
L SEPAR
ATION
(
d
B)
FREQUENCY (Hz)
PSR
R
(
d
B)
FREQUENCY (Hz)
THD+N vs. frequency
Channel separation vs. frequency
PSRR vs. frequency
V
DD
=5V
V
O
=3.5Vpp
V
DD
=3.3V
V
DD
=5V
V
DD
=2.8V
V
O
=2Vpp
V
DD
=2.8V
V
O
=2Vpp
V
DD
=3.3V
V
O
=2Vpp
V
DD
=2.8V
V
DD
=3.3V
V
O
=2Vpp
V
DD
=5V
V
O
=3.5Vpp
V
RR
=-20dBV
Vref=1/2V
DD



QUIE
S
C
E
N
T CURRE
NT (mA
)
SUPPLY VOLTAGE (V)
Quiescent current vs. supply voltage



MO
SA
MS6308
Class AB Stereo Headphone Driver
REV 1
5
www.mosanalog.com.tw
APPLICATION INFORMATION
Inverting application
MS6308
1
2
3
3.9k
V
REF
3.9k
3.9k
3.9k
7
5
6
(typ. 2.5V)
R
L
V
OA
8
4
100uF
100uF
V
iB
V
iA
V
DD
V
OB
R
L
100uF
10uF
10uF
Fig.2 Measurement circuit, inverting application



Example of CD application with MS6311
BCK
WS
DATA
GND
VoR
n.c
VoL
V
DD
MS6311
100uF
MS6308
68pF
56k
22k
22k
1nF
15k
1.2nF
1uF
100k
1uF
100k
10
Supply
V
REF
47uF
0.1uF
f
-3dB
= 17.5kHz
DC
gain
= 1.5
V
DAC out p-p
= 1.32V
V
out p-p
= 1.98V
For V
DD
= 3.3V
Headphone
(32
)
Fig.3 Example of a multiple feedback third order lowpass filter application.