G1421 Datasheet, PDF (10/24 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function

Global Mixed-mode Technology Inc.
G1421
Total Harmonic Distortion Plus
Noise vs Output Frequency
10_{R R}
5 _VDD=3.3V
RL=4Ω
2 _SE
1 Av=-2
Po=50mW
0.5
%
0.2
0.1
Po=100mW
0 .05
0 .02
0 .01
20
Po=150mW
50
10 0 2 00
5 00
1k
2k
Hz
Figure 35
5k
10 k 20k
10
5
2
1
0.5
%
0.2
0.1
0 .05
Total Harmonic Distortion Plus
Noise vs Output Power
VDD=3.3V
RL=8Ω ,SE
Av=-2
20kHz
1kHz
0 .02
0 .01
1m
100Hz
2m
5m
10 m
20 m
W
Figure 36
50m
10 0m 2 00m
10
5
2
1
0.5
%
0.2
0.1
0 .05
Total Harmonic Distortion Plus
Noise vs Output Frequency
VDD=3.3V
RL=8Ω
SE
Po=100mW
Av=-4V/V
Av=-2V/V
0 .02
0 .01
20
Av=-1V/V
50
10 0 2 00
5 00
1k
2k
Hz
Figure 37
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=3.3V
RL=8Ω
SE
Po=50mW
Po=25mW
0 .02
0 .01
20
Po=100mW
50
10 0 2 00
5 00
1k
2k
Hz
Figure 38
5k
10 k 20k
10
5
2
1
0.5
%
0.2
0.1
0 .05
Total Harmonic Distortion Plus
Noise vs Output Power
VDD=3.3V
RL=32Ω
SE
1kHz
20kHz
20Hz
0 .02
0 .01
1m
2m
5m
1 0m
2 0m
W
Figure 39
50 m
1 00m
10
5
2
1
0.5
0.2
%
0.1
0 .05
0 .02
0 .01
0.0 05
0.0 02
0.0 01
20
Total Harmonic Distortion Plus
Noise vs Output Frequency
VDD=3.3V
RL=32Ω
SE
Po=30mW
Av=-2V/V
Av=-4V/V
Av=-1V/V
50
10 0 2 00
5 00
1k
2k
Hz
Figure 40
5k
10 k 20k
Ver: 1.6
Aug 04, 2005
TEL: [phone]
http://www.gmt.com.tw
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