Overview

The LA1828 is a single-chip tuner IC for FM and AM with built-in MPX-VCO which requires no adjustment and no external parts.

Features

•Single-chip tuner with AM, FM-FE/FM-IF, MPX circuitry

•Built-in adjustment-free MPX-VCO (noceramic oscillator required)

•Reduced FM-FE oscillation level

•FM stereo indication and AM/FM tuning indication outputs can directly drive LEDs

Functions

•AM :  RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, tuning display output

•FM-FE :  RF amplifier, mixer, oscillator

•FM-IF :  IF amplifier, quadrature detector, signal strength meter, tuning display output

•MPX :  PLL stereo decoder, stereo display output, forced mono, internal VCO