Overview

The LA1827M 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)

• FM-DET, adjustment-free (using ceramic deicriminator)

• Reduced FM-FE oscillation level

• FM stereo indication and AM/FM tuning indication pins provided

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