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U4488B Datasheet(PDF) 6 Page - TEMIC Semiconductors

Part # U4488B
Description  Quasi-Split Sound Circuit and AM Demodulator
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Manufacturer  TEMIC [TEMIC Semiconductors]
Direct Link  http://www.temic.de
Logo TEMIC - TEMIC Semiconductors

U4488B Datasheet(HTML) 6 Page - TEMIC Semiconductors

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U4488B
TELEFUNKEN Semiconductors
Rev. A2, 15-Jan-98
Preliminary Information
6 (9)
Test Circuit
16
123
4
U4488B
56
7
8
15
14
13
12
11
10
9
14
12
3
4
U2860B
56
7
13
12
11
10
9
8
680
Ω
22
µF
680
Ω
SFT 5.5MA
Rx
SFT 5.74 MA
10 nF
2.2
µF 2.2 µF
270
Ω
500
Ω
10
µF
IF
V
S
+5 V
3.3 k
Ω
3.3 k
Ω
15 nF
AF2
AF1
Squelch
Mute
22
µF
V
S
+5 V
10 nF
S2
L
1
8.2 pF
VCO
(38.9 MHz)
4.7
µF
150
Ω
4.7
µF 470 nF
S1
AGC
(Mean/Peak)
15 nF
AF (AM)
33.4
MHz
38.9
MHz
Standard B/G
Intercarrier
frequency
13790
32.4 MHz
Standard L
IF2
IF1
S3
IF1/IF2 Mute
10 nF
10 nF
10 nF
Figure 3.


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