SGM9116_17 Datasheet, PDF (8/11 Pages) SG Micro Corp – Triple, 38.5MHz, 6th-Order HDTV Video Filter Driver

SGM9116
Triple, 38.5MHz, 6th-Order
HDTV Video Fliter Driver
APPLICATION INFORMATION (continued)
Typical Application Diagram
The following schematic in Figure 1 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. Figure 2 is a kind of special application in STB.
0.1µF
or 0.01µF
+5V
10µF
4
+V_S
R/Pr
1
8
IN1 OUT1
R/Pr
75Ω 220µF
75Ω
SGM9116
2
7
G/Y
IN2 OUT2
G/Y
75Ω 220µF
75Ω
B/Pb
3
6
IN3 OUT3
75Ω 220µF
75Ω
GND
5
B/Pb
Figure 1. Input DC Coupling and Output AC Coupling Application Schematic
SOC
of
STB
Y
75Ω
Pb
75Ω
Pr
75Ω
0.1µF
or 0.01µF
10µF
4
+V_S
1
IN1
8
OUT1 _A
SGM9116
75Ω 220µF
75Ω 220µF
2
IN2
7
OUT2 _B
75Ω 220µF
75Ω 220µF
3
IN3
6
OUT3 _C
GND
5
75Ω 220µF
75Ω 220µF
V_CC
to Loading 1
to Loading 2
to Loading 1
to Loading 2
The three leads of A, B and C
should be connected immediately
to signal output in layout.
to Loading 1
to Loading 2
Figure 2. Input DC Coupling and Output AC Coupling Application Schematic in STB
NOTE:
1. Power supply +VS must be sequenced on first before input video signals.
SG Micro Corp
www.sg-micro.com
MARCH 2017
8