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TYPICAL APPLICATION CIRCUIT
UPC1686GV
Figure 4
VCC
IF Output
47 KΩ
1SV164
47 KΩ
BT (0.5 to 29V)
47 Ω
100 pF 10 Ω
2.2 µH 56 pF
1000 pF
1SV191
47 KΩ
OSC
100 MHz φ0.4 φ3.2 12T
250 MHz φ0.4 φ3.2 7T
520 MHz φ0.4 φ2.8 2T
550 MHz φ0.4 φ3.0 2T
1000 pF
RF 55 MHz
RF 200 MHz
RF 500 MHz
4
3
2
1
10 pF
C1 8 pF
C1 4 pF
C1 2 pF
L1 φ0.3 φ3.5 24T L1 φ0.4 φ3.2 3T L1 φ0.4 φ3.5 2T
L2 φ0.3 φ3.5 32T L2 φ0.4 φ4.0 7T L2 φ0.5 φ3.5 2T
5
6
7
8
20 pF
1000 pF
1000 pF
1000 pF
C1
L2
RF Input
L1
APPLICATION BLOCK DIAGRAM FOR T.V. TUNER
B.P.F.
UHF RF Input
RF Amp
B.P.F.
UPC1687
UPC1685
U-MIX
U-OSC
RES.
U-OSC
UIF-
B.P.F
IF
AMP
B.P.F.
RF Amp
B.P.F.
VHF RF Input
V-OSC
RES.
V-MIX
V-OSC
IF
AMP
UPC1686
IF Output