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Part Name
Description
LA7790M View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LA7790M
QPSK Transmitter for Cable TV
SANYO -> Panasonic
LA7790M Datasheet PDF : 14 Pages
First
Prev
11
12
13
14
Equivalent circuit of RF amplifier block
0 to 3
µ
A
Mute
23
300
V
CC
Choke
Coil
Vout
RF
output
1
V
CC
30 mA
LA7790M
Load resistor
75
V
CC
5k
R2
from
1st stage
Mute
2nd stage
1st stage
3.5 V
RF input
300
R1
22
Vin
300
Power
20
save
0 to 4
µ
A
Power save
RF
Amplifier
Gain
=·
·
—R1—+—R—2 —+ —30—0
R1 + 300
R1 : Input Resistor
The gain of RF amplifier can be adjusted by changing the value R1.
Unit (resistance :
Ω
)
No. 5689-11/14
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