U4313B-A 查看數據表（PDF） - Temic Semiconductors
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U4313B-A Datasheet PDF : 14 Pages
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TELEFUNKEN Semiconductors
U4313B
R15
22 k W
VS
R14
22 k W
C7
10 mF
C8
Filter
m TOKO A119ACS-19000Z
(L = 2.2 H, C = 100 pF)
56 W R9
100 nF
C9
10 mF
C10
22 pF
300 W
R8
100 k W
IF input
R10
C11
10 nF
C2
100 nF
C1
10 nF
W 8.2 k
R1
16
15
14
13
12
11
10
9
Wake up
out
C3
1.5 nF
100 kW
1
2
3
30 k W R2
R6
W 100 k
R5
C4
100 nF
Data filter
output
R7 Wake up
22 kW
R3
220 kW
C5
220 nF
4
5
6
7
8
R12
C12
R11
10 k W
W 100 k 220 nF
100 kW
R13
R4
10 k W
C6
220 nF
Comparator
output
Figure 26. FM test circuit with 2 kHz Bessel low pass data filter
10
0
–10
–20
–30
–40
–50
–60
–70
0
95 10291
S+N
N
20
40
60
80 100
m IF-input level ( d BV )
Figure 27. Signal to noise ratio FM; deviation 22.5 kHz
Rev. A1: 23.06.1995
2.5
C10 = 22 pF
2.0
1.5
1.0
C10 = 47 pF
0.5
0
10.3
10.5
10.7
10.9
11.1
95 10290
Frequency ( MHz )
Figure 28. FM-discriminator characteristic
11 (14)
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