SGM9115_16 Datasheet, PDF (7/11 Pages) SG Micro Corp – SDTV Video Filter Driver

SGM9115
Triple, 9MHz, 3rd-Order
SDTV Video Filter Driver
APPLICATION INFORMATION
Typical Application Diagram
The following schematic in Figure 3 is normally used for AC-coupled output and DC-coupled input with DAC which has
an output voltage range from 0V to 1.4V. AC-coupled output offers slightly lower power dissipation and high ESD
protection ability.
The schematics in Figure 1 and Figure 2 are also popular in design. Figure 4 is a kind of special application in STB.
0.1µF
or 0.01µF
+5V
10µF
4
+VS
CVBS1
1
8
IN1 OUT1
75Ω
75Ω
SGM9115
CVBS1
Y
S-Video
2 _{IN2 OUT2} 7
75Ω
75Ω
3
6
C
IN3 OUT3
75Ω
75Ω
GND
5
Y
S-Video
C
CVBS1
75Ω
Y
S-Video
75Ω
C
75Ω
0.1µF
or 0.01µF
+5V
10µF
4
0.1µF
+VS
1
8
IN1 OUT1
SGM9115
75Ω 220µF
CVBS1
0.1µF
2 _IN2
OUT2 ⁷
75Ω 220µF
0.1µF
3
IN3
6
OUT3
GND
5
75Ω 220µF
Y
S-Video
C
Figure 1. DC Coupling Application Schematic
CVBS1
75Ω
Y
S-Video
75Ω
C
75Ω
0.1µF
or 0.01µF
4
+VS
1
8
IN1 OUT1
SGM9115
+5V
10µF
75Ω 220µF
CVBS1
2 _IN2
OUT2 ⁷
75Ω 220µF
3
6
IN3 OUT3
GND
5
75Ω 220µF
Y
S-Video
C
Figure 3. Input DC Coupling and Output AC Coupling
Application Schematic
Figure 2. AC Coupling Application Schematic
SG Micro Corp
7
www.sg-micro.com