G1427
Global Mixed-mode Technology Inc.
Supply Ripple Rejection Ratio
vs Frequency
Supply Ripple Rejection Ratio
vs Frequency
+0
+0
T
T
T
T
T
T T
-10
-10
VDD=5V
RL=8
Cb=1µF
SE
VDD=5V
Ω
-20
-20
-30
-40
-50
RL=8
Ω
Cb=1µF
BTL
-30
-40
-50
Av=21.6dB
d
B
d
B
-60
-70
-80
-90
-60
-70
-80
Av=6dB
-90
-100
-100
20
50
100
200
50 0
Hz
1k
2k
5k
1 0k
20k
20
50
100
200
5 00
Hz
1k
2k
5 k
10k
20 k
Figure 23
Figure 24
Channel Separation
Channel Separation
-20
-25
-20
-25
-30
T
-30
-35
VDD=5V
Po=1W
-35
-40
VDD=5V
Po=1W
RL=8
-40
-45
RL=8
Ω
-45
-50
Ω
BTL,Av=6dB
-50
SE,Av=4.1dB
-55
-60
-55
-60
d
B
d
B
-65
-70
-65
L TO R
-70
-75
L TO R
-75
-80
-80
-85
-90
-85
-90
R TO L
R TO L
-95
-95
-100
-100
20
50
100
200
5 00
Hz
1k
2k
5 k
10k
20 k
20
50
100
200
50 0
Hz
1k
2k
5k
1 0k
20k
Figure 25
Figure 26
Output Noise vs Frequency
Output Power vs Load Resistance
5 00u
4 00u
2.5
3 00u
VDD=5V
RL=4
BTL,Av=6dB
VDD=5V
THD+N=1%
BTL
Ω
2
1.5
1
2 00u
A-Weighted filter
Each Channel
1 00u
V
70u
60u
50u
40u
30u
20u
0.5
0
10u
20
50
100
200
5 00
Hz
1k
2k
5 k
10k
20 k
0
10
20
30
40
Load Resistance(Ω)
Figure 27
Figure 28
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.3
Sep 23, 2005
7