G1428F31UF
| Model | G1428F31UF |
| Description | 2W Stereo Audio Amplifier |
| PDF file | Total 16 pages (File size: 339K) |
| Chip Manufacturer | GMT |
Global Mixed-mode Technology Inc.
G1428
Supply Ripple Rejection Ratio
vs Frequency
+0
-10
-20
-30
-40
d
B
-50
-60
-70
-80
-90
-100
20
Supply Ripple Rejection Ratio
vs Frequency
+0
-10
-20
-30
-40
d
B
-50
-60
-70
T T
VDD=5V
RL=8
Ω
Cb=1µF
BTL
T
T
T
T T
VDD=5V
RL=8
Ω
Cb=1µF
SE
Av=-24V/V
Av=-2V/V
-80
-90
-100
20
50
100
200
5 00
Hz
1k
2k
5k
10k
20 k
50
100
200
5 00
Hz
1k
2k
5k
10k
20 k
Figure 23
Figure 24
Channel Separation
-20
-25
-30
-35
-40
-45
-50
-55
d
B
-60
-65
-70
-75
-80
-85
-90
-95
-100
20
50
100
200
d
B
Channel Separation
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
T
VDD=5V
Po=1W
RL=8
Ω
BTL,Av=-2V/V
VDD=5V
Vo=1Vrms
RL=10k
Ω
SE,Av=-1V/V
L TO R
L TO R
R TO L
R TO L
5 00
Hz
1k
2k
5k
10k
20 k
-110
-120
20
50
100
200
5 00
Hz
1k
2k
5k
10k
20 k
Figure 25
Figure 26
Output Noise vs Frequency
5 00u
4 00u
3 00u
Output Power vs Load Resistance
2.5
2 00u
Output Power(W)
VDD=5V
RL=4
Ω
BTL,Av=-2V/V
A-Weighted filter
2
1.5
1
0.5
0
0
10
1 00u
V
70u
60u
50u
40u
30u
20u
VDD=5V
THD+N=1%
BTL
Each Channel
10u
20
50
100
200
5 00
Hz
1k
2k
5k
10k
20 k
20
Load Resistance(Ω)
30
40
Figure 27
Figure 28
Ver: 1.2
Mar 31, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
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