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Datasheet: G1402P1TF (Global Mixed-mode Technology Inc)

Stereo Headphone Power Amplifier

 

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Global Mixed-mode Technology Inc
Ver: 1.2
Jun 28, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G1402
Global Mixed-mode Technology Inc.
Stereo Headphone Power Amplifier
Features
High performance Class AB amplifier
High signal-to-noise ratio
Low distortion
Low power consumption
Large output voltage swing
Excellent power supply ripple rejection
3.0V to 6.5V supply voltage range
Surface-Mount package-SOP 8
Applications
CD-ROM
DVD-ROM
CD-R/W
MP3
Portable Stereo
General Description
The G1402 is an output rail-to-rail stereo audio power
amplifier housed in a 8-pin SOP package capable of
delivering 125mW of continuous power into 16
loads
& 75mW into 32
loads with the THD <0.1% per
channel.
The gain setting of the amplifiers can simply achieve
by setting two external resistors R
I
(input resistor) & R
F
(feedback resistor) promptly.
The G1402 is a dual channel, low voltage, low power,
and high performance amplifiers. The quiescent
current is 3mA @ 5V typically. With excellent AC
performance (small THD), it can be designed into a
wide range of headphone driving applications.
Ordering Information
ORDER
NUMBER
MARKING
TEMP.
RANGE
PACKAGE
G1402P1X
G1402
-40C to +85C
SOP-8L
G1402P1Xf
G1402
-40C to +85C SOP-8L (Pb free)
Note: X Specify the packing type
U: Tape & Reel T: Tube




Pin Configuration
SYMBOL PIN
DESCRIPTION
OUTA 1
output
A
INA(neg)
2
inverting input A
INA(pos)
3
non-inverting input A
V
SS
4
negative
supply
INB(pos)
5
non-inverting input B
INB(neg)
6
inverting input B
OUTB 7
output
B
V
DD
8
positive
supply
INA(neg)
INA(pos)
OUTA
V
SS
V
DD
OUTB
INB(neg)
INB(pos)
1
8
2
3
4
7
6
5
G1402
INA(neg)
INA(pos)
OUTA
V
SS
V
DD
OUTB
INB(neg)
INB(pos)
1
8
2
3
4
7
6
5
G1402
Ver: 1.2
Jun 28, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G1402
Global Mixed-mode Technology Inc.
Block Diagram

Absolute Maximum Ratings
(Note1)
SYMBOL PARAMETER
CONDITION
MIN
MAX
UNIT
V
DD
Supply
voltage
0
7.0
V
T
stg
Storage
temperature
-65 +150 C
T
amb
Operating ambient temperature
-40
+85
C
ESD ESD
voltage
HBM
-
2
KV
Notes:
1. Absolute Maximum Ratings are limits beyond which damage to the device may occur.
Thermal Characteristics
SYMBOL PARAMETER VALUE
UNIT
R
th j-a
Thermal resistance from junction to ambient in free air SO8
240
C/W
Test and Application Information
Fig.1 Measurement circuit for inverting application
_
+
_
+
G1402
1
2
3
4
5
6
7
8
OUTA
INA(neg)
INA(pos)
V
SS
V
DD
OUTB
INB(neg)
INB(pos)
_
+
_
+
_
+
G1402
1
2
3
4
5
6
7
8
OUTA
INA(neg)
INA(pos)
V
SS
V
DD
OUTB
INB(neg)
INB(pos)
_
+
_
+
2
3
V
DD
V
INA
3.9k
3.9k
V
INB
3.9k
5
6
7
4
1
8
G1402
3.9k
+
220F
V
OUTA
R
L
+
C6
100F
220F
+
R
L
V
OUTB
2.2F
2.2F
100k
100k
1F
_
+
_
+
2
3
V
DD
V
INA
3.9k
3.9k
V
INB
3.9k
5
6
7
4
1
8
G1402
3.9k
+
220F
V
OUTA
R
L
+
C6
100F
220F
+
R
L
V
OUTB
2.2F
2.2F
100k
100k
1F
Ver: 1.2
Jun 28, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G1402
Global Mixed-mode Technology Inc.
Electrical Characteristics
V
DD
= 5V; V
SS
= 0V; T
A
= 25C; f
I
= 1kHz; R
L
= 32
connected to V
DD
/2; unless otherwise specified.
SYMBOL PARAMETER
CONDITION
MIN
TYP
MAX
UNIT
Supplies
Supply voltage
3.0
5.0
6.5
V
Single
3.0
5.0
6.5
V
V
DD
Dual 1.5
2.5
3.25
V
V
SS
Negative supply voltage
-1.5
-2.5
-3.25
V
I
DD
Supply current
no load
-
3.0
5.0
mA
P
tot
Total power dissipation
no load
-
15
25
mW
DC Characteristics
V
I(OS)
Input offset voltage
-50
-
50
mV
V
CM
Common mode voltage
0
-
3.5
V
G
V
Open-loop voltage gain
R
L
= 5k
60 90 - dB
I
O
Maximum output current
THD+N <0.1%
-
70
-
mA
R
O
Output
resistance
closed-loop
- 0.1 -
V
DD
-V
OH
Output Voltage Swing High
Sourcing current = 100mA
-
0.4
1
V
V
OL
-V
SS
Output Voltage Swing Low
Sinking current = 100mA
-
0.5
1
V
PSRR
Power supply rejection ratio
fi = 1kHz;
V
ripple(rms)
= 100mV
rms
- 70 - dB
CS
Channel separation
R
L
=32
,C
b
=1F, P
O
=70mW
- 65 - dB
AC Characteristics
THD
Total harmonic distortion
note 2
-
< 0.1
-
%
f
G
Unity gain frequency
open-loop; R
L
= 5k
- 5 -
MHz
note 1; R
L
= 16
; f=1kHz
- 125 - mW
P
O
Maximum output power
note 1; R
L
= 32
; f=1kHz
- 75 -
mW
Notes:
1. Values are proportional to V
DD
; THD+N < 0.1%
2. V
DD
= 5.0V; V
O(P-P)
= 4.0V (at 0 dB)
Ver: 1.2
Jun 28, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
4
G1402
Global Mixed-mode Technology Inc.
Electrical Characteristics
C
IN
=2.2F, C
OUT
=330F, C
b
=1F, A
v
=1, R
i
=18k, R
f
=18k ; A
v
=-2, R
i
=18k, R
f
=36k ; A
v
=-4, R
i
=9k,R
f
=36k,T
A
=25C

0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
1m
200m
2m
5m
10m
20m
50m
100m
W
VDD=5V
RL=32
Av=-1
20kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
VDD=5V
RL=32
Po=50mW
Av=-1V/V
Av=-2V/V
Av=-4V/V
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
VDD=5V
RL=32
Av=-1
Po=70mW
Po=60mW
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
2m
200m
5m
10m
20m
50m
100m
W
VDD=5V
RL=16
Av=-1
20kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
VDD=5V
RL=16
Po=50mW
Av=-4V/V
Av=-2V/V
Av=-1V/V
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
1m
100m
2m
5m
10m
20m
50m
W
VDD=3.3V
RL=32
Av=-1
20kHz
1kHz
20Hz
THD+N vs Output Power
THD+N vs Frequency
THD+N vs Frequency
THD+N vs Output Power
THD+N vs Frequency
THD+N vs Output Power
Ver: 1.2
Jun 28, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
5
G1402
Global Mixed-mode Technology Inc.
Electrical Characteristics
(continued)
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
VDD=3.3V
RL=32
Po=25mW
Av=-1V/V
Av=-2V/V
Av=-4V/V
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
2m
100m
3m
4m
5m 6m 7m
10m
20m
30m
40m 50m
70m
W
VDD=3.3V
RL=16
Av=-1
20kHz
1kHz
20Hz
0.01
10
0.02
0.05
0.1
0.2
0.5
1
2
5
%
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
VDD=3.3V
RL=16
Po=25mW
Av=-4V/V
Av=-2V/V
Av=-1V/V
10u
100u
20u
30u
40u
50u
60u
70u
80u
90u
V
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
VDD=5V
RL=32
Av=-1
Cb=1F
BW=20kHz , No filters
A- Weighting
-100
-20
-95
-90
-85
-80
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-25
d
B
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
VDD=5V
RL=32
Av=-1
Po=70mW
Cb=1F
Channel B to A
Channel A to B
-120
+0
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
d
B
20
20k
50
100
200
500
1k
2k
5k
10k
Hz
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
VDD=5V
RL=32
Av=-1
Vripple=100mVrms
Cb=1F
Vpin 3,5=2.5V FORCED
THD+N vs Frequency
THD+N vs Output Power
THD+N vs Frequency
Output Noise
Channel Separation
Power Supply Rejection Ratio
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