Ordering number : EN660A Monolithic Linear IC LA1231N FM IF System Overview Package Dimensions Being developed for FM IF System, LA1231 is a highly unit: mm integrated circuit in which almost all functions are 3006B-DIP16 contained concerning the FM tuner IF stage.
The block diagram of equivalent circuit is shown below.
Usual [LA1231N] peripheral circuits are shown also in examples of application circuits.
The IF amplifier and limiter stages are composed of 6- stage double-end type differential amplifier, which is superior on its AMR.
The signal meter driving stage which is located in parallel therewith consists of a 3-stage level detector circuit and a drive circuit in order to...

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