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    | Partname: | LM3189 |  | Description: | LM3189 FM IF System |  | Manufacturer: | National Semiconductor |  | Datasheet: | PDF (210K). Click here to download *)
 |  | The LM3189N is a monolithic integrated circuit that provides all the functions of a comprehensive FM IF system The block diagram of the LM3189N includes a three stage FM IF amplifier limiter configuration with level detectors for each stage a doubly balanced quadrature FM detector and an audio amplifier that features the optional use of a muting (squelch) circuit |  |  Click here to download LM3189 Datasheet*)
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