SGM9144 Datasheet, PDF (6/10 Pages) SG Micro Corp – Capless Output Coupling Low Voltage Video Amplifier

SGM9144
Capless Output Coupling
Low Voltage Video Amplifier with LPF
TYPICAL APPLICATION CIRCUITS
Video Input
Power Save
Control
0.1μF
75Ω
3 _VIN
V+ ²
C_PUMP
1μF
1
CP1
V- ⁷
SGM9144
8
CP2
4.7kΩ
4 _Powersave
5
VOUT
GND
6
C_BYP1
0.1μF
+ _CBYP2
10μF
C_PVSS
1μF
75Ω
Figure 1. Standard Circuit
V₊
Video Output
Video Input
Power Save
Control
0.1μF
75Ω
3 _VIN
V+ ²
C_PUMP
1μF
4.7kΩ
1
CP1
V- ⁷
SGM9144
8
CP2
4 _Powersave
VOUT ⁵
GND
6
C_BYP1
0.1μF
+ _CBYP2
10μF
C_PVSS
1μF
75Ω
75Ω
V₊
Video Output 1
Video Output 2
Figure 2. Driving Dual 75Ω Loading
NOTE:
In order to get good performance, it’s important to select the right C_PUMP, C_PVSS, C_BYP1 and C_BYP2 in applications. All tests are
performed with circuit set up with X5R and X7R capacitors. Capacitors having high dissipative loss, such as Y5V capacitor, may
cause performance degradation and unexpected system behavior.
SG Micro Corp
6
www.sg-micro.com