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U4270B - FM IF limiter amplifier and detector

General 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.

Key Features

  • D 7 stage limiter amplifier D Multipath signal detector D Stop signal generator with controllable threshold D Signal strength output D Controllable mute function D High signal/noise ratio and low signal distortion Block Diagram R3 1 14 (15) 9 (10) 10 (11) Mute depth control 3 (4) 4 (5) 8 (9) 18(20) (19) 17 (8) 7 16 (18) 5 (6) 6 (7) 11 (12) 15 (16) 13 (14) 12 (13) 2 ( ) SSO 20 94 8876 Rev. A1: 07.10.1994 Preliminary Information 1 U 4270 B Pin.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com TELEFUNKEN Semiconductors U 4270 B FM IF limiter amplifier and detector 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 D Signal strength output D Controllable mute function D High signal/noise ratio and low signal distortion Block Diagram R3 1 14 (15) 9 (10) 10 (11) Mute depth control 3 (4) 4 (5) 8 (9) 18(20) (19) 17 (8) 7 16 (18) 5 (6) 6 (7) 11 (12) 15 (16) 13 (14) 12 (13) 2 ( ) SSO 20 94 8876 Rev. A1: 07.10.