G1420 Datasheet, PDF (10/20 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier

Global Mixed-mode Technology Inc.
G1420
Output Noise Voltage vs Frequency
10 0u
90u _VDD=3.3V
8 0u
70u _RL=4Ω
6 0u
5 0u
4 0u
BW=22Hz to 20kHz
Vo BTL
V
3 0u
2 0u
Vo SE
1 0u
20
50
1 00
2 00
5 00
1k
2k
Hz
Figure 35
5k
10k 20k
Supply Ripple Rejection Ratio vs Frequency
+ 0_T
-10
VDD=5V
-20 _RL=4Ω
-30 CB=4.7uF
-40
d
-50
B
-60
BTL
-70
-80
SE
-90
-1 00
20
50
1 00
2 00
5 00
1k
2k
Hz
Figure 36
5k
10k 20k
Supply Ripple Rejection Ratio vs Frequency
+ 0_T
-10
VDD=3.3V
-20
RL=4Ω
CB=4.7uF
-30
-40
d
-50
B
-60
BTL
-70
-80
-90
SE
-1 00
20
50
1 00
2 00
5 00
1k
2k
Hz
5k
10k 20k
Figure 37
Crosstale vs Frequency
-20
-25
-30 VDD=5V
-35 Po=1.5W
-40 _RL=4Ω
-45
BTL
-50
-55
d
-60
B _{-65 L to R}
-70
-75
-80
-85
-90 ^{R to L}
-95
-100
20
50 100 200
500 1k
2k
Hz
Figure 38
5k 10k 20k
-20
-25
-30
-35
-40
-45
-50
-55
d
-60
B
-65
-70
-75
-80
-85
-90
-95
-100
20
Crosstale vs Frequency
VDD=3.3V
Po=0.75W
RL=4Ω
BTL
L to R
R to L
50 100 200
500 1k
2k
5k
Hz
Figure 39
10k 20k
Crosstale vs Frequency
-30
-35
-40 ^VDD=5V
-45 ^Po=75mW
-50 ^RL=32Ω
-55
SE
-60
d
B
-65
-70
R to L
-75
-80
-85
-90
-95
L to R
-1 00
20
50
10 0 20 0
50 0
1k
2k
Hz
Figure 40
5k
10 k 20k
Ver: 1.5
Aug 04, 2005
TEL: [phone]
http://www.gmt.com.tw
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