LA1845N Datasheet PDF - Sanyo Semiconductor

●Overview

●The LA1845N/1845NM is designed for use in mini systems and is a single-chip tuner IC that provides electronic tuning functions using SD/IF-count technigue. It incorporates a pilot canceler and an adjustment-free MUX VCO circuit, thus allows additional parts to be reduced.

●Functions

●• AM: RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, SD, oscillator buffer, IF buffer,

●stereo IF output, AGC time constant switch

●• FM IF: IF amplifier, quadrature detector, S-meter, SD (signal detection), S-curve detection, IF buffer output

●• MPX: PLL stereo decoder, stereo display, forced monaural, VCO stop, audio muting, adjacent

●channel interference rejection function, pilot canceler

●Features

●• Integrated MPX VCO (ceramic resonators are no longer required.)

●• Built-in adjacent channel interference rejection function(114 kHz, 190 kHz)

●• Supports both SD and IF-count techniques

●• Both FM SD sensitivity and bandwidth can be set

●• Pilot canceler built in.