G1431 Datasheet, PDF (6/13 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier

Global Mixed-mode Technology Inc.
Typical Characteristics (continued)
G1431
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
15kHz
2
VDD=5V
RL=8Ω
Av=15.6dB
1
0.5
%
0.2
1kHz
0.1
0.05
20Hz
0.02
0.01
3m 5m
10m 20m
50m 100m 200m
W
Figure 17
500m
1
23
Total Harmonic Distortion Plus
Noise vs Output Power
10
5
15kHz
2
1
0.5
%
0.2
1kHz
0.1
VDD=5V
0.05
RL=8Ω
0.02 ^Av=21.6dB
20Hz
0.01
3m 5m
10m 20m
50m 100m 200m
W
Figure 18
500m
1
23
Supply Ripple Rejection Ratio
vs Frequency
+0_{T T}
T
T
-10
VDD=5V
-20
RL=8Ω
-30 _Cb=1µF
-40
d
B
-50
-60
T
TT
Av=21.6dB
-70
-80
Av=6dB
-90
-100
20
50
100
200
500
1k
2k
Hz
Figure 19
5k
10k 20k
-20 _T
-25
-30
-35
-40
-45
-50
-55
d
-60
B
-65
-70
-75
-80
-85
-90
-95
-100
20
Channel Separation
VDD=5V
Po=1W
RL=8Ω
Av=6dB
L TO R
R TO L
50
100
200
500
1k
2k
Hz
Figure 20
5k
10k 20k
Output Noise vs Frequency
500u
400u
300u _VDD=5V
200u RL=4Ω
Av=6dB
A-Weighted filter
100u
V
70u
60u
50u
40u
30u
20u
10u
20
50
100
200
500
1k
2k
Hz
5k
10k 20k
Figure 21
Output Power vs Load Resistance
2.5
2
1.5
VDD=5V
THD+N=1%
1
Each Channel
0.5
0
0
10
20
30
40
Load Resistance(Ω)
Figure 22
Ver: 1.3
Sep 23, 2005
TEL: [phone]
http://www.gmt.com.tw
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