G1421 Datasheet, PDF (9/24 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function

Global Mixed-mode Technology Inc.
G1421
10
5
2
1
0.5
%
0.2
0.1
0 .05
0 .02
0 .01
20
Total Harmonic Distortion Plus
Noise vs Output Frequency
VDD=5V
RL=4Ω
HP-IN
Av=-2V/V
Po=0.25W
Po=0.1W
Po=0.4W
50
100
2 00
5 00
1k
2k
Hz
Figure 29
5k
10 k 20k
10
5
2
1
0.5
%
0.2
0.1
0 .05
Total Harmonic Distortion Plus
Noise vs Output Frequency
VDD=5V
RL=8Ω
HP-IN
Po=0.25W
Av=-2V/V
Av=-4V/V
0 .02
0 .01
20
Av=-1V/V
50
100
2 00
5 00
1k
2k
Hz
Figure 30
5k
10 k 20k
10
5
2
1
0.5
%
0.2
0.1
0 .05
0 .02
0 .01
20
Total Harmonic Distortion Plus
Noise vs Output Frequency
VDD=5V
RL=8Ω
HP-IN
Av=-2V/V
Po=0.1W
Po=0.05W
Po=0.25W
50
100
2 00
5 00
1k
2k
Hz
Figure 31
5k
10 k 20k
Total Harmonic Distortion Plus
Noise vs Output Frequency
10
5
VDD=5V
2 _RL=32Ω
1 _HP-IN
0.5 _Av=-2V/V
Po=25mW
0.2
%
0.1
0 .05
0 .02
0 .01
0.0 05
0.0 02
0.0 01
20
Po=50mW
50
100
2 00
Po=70mW
5 00
1k
2k
Hz
5k
10 k 20k
Figure 32
Total Harmonic Distortion Plus
Noise vs Output Power
10
VDD=3.3V
5
RL=4Ω ,SE
Av=-2
2
1
20kHz
0.5
%
0.2
1kHz
0.1
0 .05
100Hz
0 .02
0 .01
1m
2m
5m 1 0m 20 m
50 m 10 0m 2 00 m
W
Figure 33
500 m 1
Total Harmonic Distortion Plus
Noise vs Output Frequency
10
5 VDD=3.3V
RL=4Ω
2 SE
Po=0.2W
1
Av=-4V/V
0.5
%
0.2
Av=-2V/V
0.1
0 .05
Av=-1V/V
0 .02
0 .01
20
50
10 0 2 00
5 00
1k
2k
Hz
Figure 34
5k
10 k 20k
Ver: 1.6
Aug 04, 2005
TEL: [phone]
http://www.gmt.com.tw
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