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U4270B Schematic ( PDF Datasheet ) - TEMIC Semiconductors

Teilenummer U4270B
Beschreibung FM IF limiter amplifier and detector
Hersteller TEMIC Semiconductors
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Gesamt 7 Seiten
U4270B Datasheet, Funktion
www.DataSheet4U.com
TELEFUNKEN Semiconductors
FM IF limiter amplifier and detector
U 4270 B
Description
The U 4270 B is an integrated bipolar FM-IF amplifier
circuit with field strength indicator, stop signal generator,
multipath detector and controllable mute function. It is
designed for car radios and home receiver applications.
Features
D 7 stage limiter amplifier
D Multipath signal detector
D Stop signal generator with controllable threshold
Block Diagram
D Signal strength output
D Controllable mute function
D High signal/noise ratio and low signal distortion
1 14 (15)
9 (10)
18(20)
(19)
17
R3 Mute depth control
10 (11)
3 (4)
4 (5)
8 (9)
(8)
7
16 (18)
11 (12) 15 (16) 13 (14) 12 (13)
5 (6)
6
(7)
2
( ) SSO 20
94 8876
Rev. A1: 07.10.1994
Preliminary Information
1






U4270B Datasheet, Funktion
U 4270 B
Ordering and package information
Extended type number
U 4270 B-CFS
U 4270 B-CFSG3
U 4270 B-C
Package
SSO 20 plastic
SSO 20 plastic
DIP 18
Dimensions in mm
Package DIP 18
TELEFUNKEN Semiconductors
Remarks
Taping according to IEC-286-3
Package SSO 20
6
Preliminary Information
Rev. A1: 07.10.1994

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