GMT G1401 Datasheet
Global Mixed-mode Technology Inc.
G1401
Stereo Headphone Power Amplifier
Features
Class AB amplifier
High performance
High signal-to-noise ratio
Low distortion
Low power consumption
Large output voltage swing
Excellent power supply ripple rejection
3.0V to 7.0V supply voltage range
Surface-Mount package-SOP 8
Applications
CD-ROM
DVD-ROM
CD-R/W
MP3
Portable Stereo
Earphone for cellular phone
Pin Configuration
General Description
The G1401 is a stereo audio power amplifier housed
in a 8-pin SOP package capable of delivering 135mW
of continuous power per channel into 16Ω loads.
Amplifier gain is externally configured by means of two
resistors per input channel.
The G1401 is a dual channel, low voltage, low power,
performance OP amps that can be designed into a
wide range of headphone driving applications, at an
economical price.
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
G1401P1 0°C to +70°C 8 SOP
Pinning
OUTA
INA(neg)
INA(pos)
1
2
3
V
4
SS
Ver 1.1
Aug 13, 2001
G1401
8
7
6
5
V
DD
OUTB
INB(neg)
INB(pos)
SYMBOL PIN DESCRIPTION
OUTA 1 output A
INA(neg) 2 inverting input A
INA(pos) 3 non-inverting input A
VSS 4 negative supply
INB(pos) 5 non-inverting input B
INB(neg) 6 inverting input B
OUTB 7 output B
VDD 8 positive supply
1
TEL: 886-3-5788833
http://www.gmt.com.tw
Global Mixed-mode Technology Inc.
Block Diagram
OUTA
INA(neg)
G1401
G1401
1
2
_
8
V
DD
INA(pos)
V
SS
+
3
4
_
+
7
6
5
OUTB
INB(neg)
INB(pos)
Absolute Maximum Ratings
(Note1)
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VDD Supply voltage 0 7.0 V
T
Storage temperature -65 +150 °C
stg
T
Operating ambient temperature 0 +70 °C
amb
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
Thermal resistance from junction to ambient in free air SO8 210 °C/W
th j-a
Test and Application Information
V
DD
2.2µF
3.9k
3.9k
Ω
Ω
V
INA
V
ref
(typ. 2.5V )
V
INB
2.2µF
3.9k
Ω
2
_
3
+
5
+
6
_
3.9k
Ω
18
G1401
74
220µF
+
+
220µF
+
C6
100µF
V
OUTA
R
L
V
OUTB
R
L
Ver 1.1
Aug 13, 2001
Fig.1 Measurement circuit for inverting application
2
TEL: 886-3-5788833
http://www.gmt.com.tw
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