SM5301BS NPC [Nippon Precision Circuits Inc], SM5301BS Datasheet - Page 8

• Manufacturer Part Number: SM5301BS
• Description: 3-channel Video Buffer with Built-in Wideband Filters with Filter Through Function
• Manufacturer: NPC [Nippon Precision Circuits Inc]

FUNCTION DESCRIPTION
Output Buffer Gain Control
GS×1 pin sets the output buffer gain.
Cutoff Frequency Control (RFC and VFC)
Cutoff frequency (fc) can be controlled by control current Ifc (= VFC/RFC) shown as Figure 1-1. And relation
of fc vs VFC at RFC = 680Ω, 820Ω, 1kΩ is shown as Figure 1-2.
GSR1, GSG1, GSB1
High or Open
Low
40
35
30
25
20
15
10
40
35
30
25
20
15
10
5
0
5
0
0
0
Gain [dB]
0
6
0.5
0.5
Figure 1-2. fc vs. VFC
Figure 1-1. fc vs. Ifc
SM5301BS
1
Ifc [mA]
VFC [V]
1
RFC = 680Ω
1.5
1.5
RFC = 1kΩ
2
SEIKO NPC CORPORATION —8
RFC = 820Ω
2.5
2