SM5301BS Datasheet, PDF (8/15 Pages) Nippon Precision Circuits Inc – 3-channel Video Buffer with Built-in Wideband Filters with Filter Through Function

SM5301BS
FUNCTION DESCRIPTION
Output Buffer Gain Control
GS×1 pin sets the output buffer gain.
GSR1, GSG1, GSB1
Low
High or Open
Gain [dB]
0
6
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.
40
35
30
25
20
15
10
5
0
0
0.5
1
1.5
2
2.5
Ifc [mA]
Figure 1-1. fc vs. Ifc
40
35
RFC = 680Ω
RFC = 820Ω
30
RFC = 1kΩ
25
20
15
10
5
0
0
0.5
1
1.5
2
VFC [V]
Figure 1-2. fc vs. VFC
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