AN7243S Datasheet, PDF (1/7 Pages) Panasonic Semiconductor – FM Front-end Circuit for Car Radio

ICs for FM/AM Tuner
AN7243S
FM Front-end Circuit for Car Radio
s 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.
s 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.
1
14
2
13
3
12
4
11
5
10
6
9
7
8
0.3
4.2±0.3
6.5±0.3
Unit : mm
14-Lead SOP Package (SOP014-P-0225)
s Block Diagram
GND
14
13
12
11
10
9
8
ADX
Driver
OSC
Mix.
Buffer
Buffer
AGC & Det.
IF-Amp.
1
2
3
4
5
6
7
VCC