G1421 Datasheet, PDF (14/24 Pages) Global Mixed-mode Technology Inc – 2W Stereo Audio Amplifier with No Headphone Coupling Capacitor Function

Global Mixed-mode Technology Inc.
G1421
Output Power vs Supply Voltage
0.7
0.6
THD+N=1%
SE
0.5
Each Channel
0.4
RL=4Ω
0.3
RL=8Ω
0.2
RL=32Ω
0.1
0
2.5
3.5
4.5
5.5
6.5
Supply Voltage(V)
Figure 59
Output Power vs Load Resistance
2
1.8
THD+N=1%
1.6
VDD=5V
BTL
1.4
Each Channel
1.2
1 _VDD=3.3V
0.8
0.6
0.4
0.2
0
0 4 8 12 16 20 24 28 32
Load Resistance(Ω)
Figure 60
Output Power vs Load Resistance
0.7
0.6
THD+N=1%
SE
0.5
Each Channel
VDD=5V
0.4
0.3
0.2
0.1
0
0
VDD=3.3V
4 8 12 16 20 24 28 32
Load Resistance(Ω)
Figure 61
Power Dissipation vs Output Power
1.8
1.6
1.4
RL=3Ω
1.2
1
0.8
RL=4Ω
0.6
VDD=5V
0.4
RL=8Ω
BTL
0.2
Each Channel
0
0
0.5
1
1.5
2
2.5
Po-Output Pow er(W)
Figure 62
Power Dissipation vs Output Power
0.8
0.7
0.6
RL=3Ω
0.5
RL=4Ω
0.4
0.3
0.2
0.1
0
0
RL=8Ω
VDD=3.3V
BTL
Each Channel
0.25
0.5
0.75
1
Output Pow er(W)
Figure 63
Power Dissipation vs Output Power
0.35
0.3
RL=4Ω
0.25
0.2
RL=8Ω
0.15
0.1
0.05
0
0
RL=32Ω
VDD=5V
SE
Each Channel
0.2
0.4
0.6
0.8
Output Pow er(W)
Figure 64
Ver: 1.6
Aug 04, 2005
TEL: [phone]
http://www.gmt.com.tw
14