FM Front-end Circuit for Car Radio

■Overview
The AN7243S is an FM front-end IC designed for DTS except RF amp. of car radio. It is built-in local oscillation
frequency buffer output and PIN diode (ADX) driver for antenna damping.

■Features
• High sensitivity · High S/N ratio
• Good IM characteristics at strong input
• Timing for AGC input level is variable.
• Built-in pre-IF-Amp. having negative (positive) temper
ature characteristics to RF amp.