A1231N - Sanyo Semicon Device

A1231N Monolithic Linear IC

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 circ.

Features

• High sensitivity on limiting : 18µV typ.
• Low distortion : 0.05% typ. determined by the linearity of phase characteristics in phase shifting circuit.
• High demodulation output : 330 mVrms typ.
• High S/N ratio : 78.5dB typ.
• Muting at detuning with little shock noise.
• Single meter drive output proportional with the input signal level dB.
• Detuning muting band having good symmetrics.
• Tuning meter driving output having wide swing width.
• Delay AGC drive output for front end.
• Constant voltage circuit is built-in : operation voltage=9 to 14V.
• Muting characteristics between adjacent .