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PDF G1422 Data sheet ( Hoja de datos )

Número de pieza G1422
Descripción 2W Stereo Audio Amplifier
Fabricantes Global Mixed-mode Technology 
Logotipo Global Mixed-mode Technology Logotipo



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No Preview Available ! G1422 Hoja de datos, Descripción, Manual

Global Mixed-mode Technology Inc.
2W Stereo Audio Amplifier
G1422
Features
„ Depop Circuitry Integrated
„ Output Power at 1% THD+N, VDD=5V
--2W/CH (typical) into a 4Ω Load
--1.2W/CH (typical) into a 8Ω Load
„ Bridge-Tied Load (BTL), Single-Ended (SE)
„ Shutdown Control Available
„ Thermal protection
„ Surface-Mount Power Package
20-Pin TSSOP-P
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Applications
„ Stereo Power Amplifiers for Notebooks or
Desktop Computers
„ Multimedia Monitors
„ Stereo Power Amplifiers for Portable Audio
Systems
General Description
The G1422 is a stereo audio power amplifier in 20pin
TSSOP thermal pad package. It can drive 2W con-
tinuous RMS power into 4Ω load per channel in
Bridge-Tied Load (BTL) mode at 5V supply voltage. Its
THD is smaller than 1% under the above operation
condition. To simplify the audio system design in the
notebook application, the G1422 supports the Bridge-
Tied Load (BTL) mode for driving the speakers, Sin-
gle-End (SE) mode for driving the headphone. For the
low current consumption applications, the SHDN mode
is supported to disable the G1422 when it is idle. The
current consumption can be further reduced to below
2µA.
Ordering Information
ORDER
NUMBER
G1422F2U
Note:F2: TSSOP-20 (FD)
U: Tape & Reel
ORDER NUMBER
(Pb free)
G1422F2Uf
Pin Configuration
MARKING
G1422
TEMP.
RANGE
-40°C to +85°C
PACKAGE
TSSOP-20 (FD)
SHUTDOWN 1
GND/HS 2
+OUTA 3
VDD 4
-OUTA 5
-INA 6
GND/HS 7
+INA 8
GND/HS 9
GND/HS 10
G1422
Top View
TSSOP-20 (FD)
20 HP-IN
19 GND/HS
18 +OUTB
17 VDD
16 -OUTB
15 -INB
14 BYPASS
13 +INB
12 GND/HS
11 GND/HS
Thermal
Pad
Bottom View
Note: Recommend connecting the Thermal Pad to the GND for excellent power dissipation.
Ver: 1.2
Jun 29, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
1

1 page




G1422 pdf
Global Mixed-mode Technology Inc.
G1422
Total Harmonic Distortion Plus
Noise vs Frequency
10
5 VDD=3.3V
RL=8Ω
2 BTL
1 Po=0.45W
Av=-4V/V
0.5
%
0.2
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0.1
0.05
Av=-2V/V
0.02 Av=-1V/V
0.01
20
50 100 200
500 1k
Hz
2k
Figure 11
5k 10k 20k
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
2 20kHz
1
VDD=5V
RL=4Ω
SE
Av=-2V/V
0.5
%
0.2 1kHz
0.1
0.05
100Hz
0.02
0.01
1m
2m
5m 10m 20m
50m 100m 200m
W
Figure 12
500m 1
Total Harmonic Distortion Plus
Noise vs Output Power
10
5 VDD=5V
RL=8Ω
2 SE
1 Av=-2V/V
0.5
%
0.2
20kHz
0.1 1kHz
0.05
0.02 100kHz
0.01
1m
2m
5m 10m 20m
50m 100m 200m
W
Figure 13
500m 1
Total Harmonic Distortion Plus
Noise vs Output Power
10
5 VDD=5V
RL=16Ω
2
SE
1 Av=-2V/V
0.5
%
0.2
20kHz
0.1
0.05 20 Hz
0.02
0.01
1m
2m
1kHz
5m 10m 20m
W
50m 100m 200m 500m
Figure 14
Total Harmonic Distortion Plus
Noise vs Frequency
10
5
VDD=5V
2 RL=16Ω
SE
1 Po=150mW
0.5
%
0.2
Av=-4V/V
0.1
Av=-2V/V
0.05
0.02
0.01
20
50 100 200
Av=-1V/V
500 1k
Hz
2k
5k 10k 20k
Figure 15
Ver: 1.2
Jun 29, 2005
10
5
2
1
0.5
%
0.2
Total Harmonic Distortion Plus
Noise vs Output Power
VDD=5V
RL=32Ω
SE
Av=-2V/V
20kHz
0.1
0.05 1kHz
20 Hz
0.02
0.01
1m
2m
5m 10m 20m
50m 100m 200m
W
Figure 16
500m 1
TEL: 886-3-5788833
http://www.gmt.com.tw
5

5 Page





G1422 arduino
Global Mixed-mode Technology Inc.
Parameter Measurement Information (Continued)
G1422
www.DataSheet4U.com
CB
4.7µF
CI
AC source
RI
1 SHUTDOWN
14 BYPASS
8 +INA
6 -INA
+
_
RF
SE Mode Test Circuit
HP-IN 20
VDD
VDD 4,17
-OUTA
+OUTA
5
3
RL 32Ω
Ver: 1.2
Jun 29, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
11

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