TDA7541TR datasheet(1/76 Pages) STMICROELECTRONICS

部件名	TDA7541TR

功能描述	AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 76 page

January 2008

Rev 3

1/76

1

TDA7541

AM/FM car radio tuner IC with stereo decoder

and intelligent selectivity system

Features

■ FM part

– AGC generation by RF and IF detection

– I/Q mixer for 1st IF 10.7MHz with image

rejection

–Mixer for 2nd IF 450kHz

– Internal 450kHz band pass filter with

bandwidth control by ISS

– Fully integrated FM demodulator with noise

cancellation

■ AM part

– Wide and narrow AGC generation

–Mixer for 1st IF 10.7MHz, AM upconversion

–Mixer for 2nd IF 450kHz

– Integrated AM-demodulator

– AM IF noise blanking

■ Stereo decoder

– PLL with adjustment free, fully integrated

VCO

– Automatic pilot dependent

MONO/STEREO switching

– Programmable ROLL-OFF compensation

– High cut and stereo blend-characteristics

programmable

– Dedicated RDS mute

– Audio noise blanker

■ Additional features

– VCO for world tuning range

– High performance fast PLL for RDS-

System

– IF counter for FM and AM with search stop

signal

– Quality detector for level, deviation,

adjacent channel and multipath

– ISS (Intelligent selectivity system) for

cancellation of adjacent channel and noise

influences

– Adjacent channel mute

– Fully electronic alignment

– Independend weather band input

– All functions I2C bus controlled

Description

The TDA7541 is a high performance tuner circuit

with stereo decoder for AM/FM car radio. It

contains a mixer, IF amplifier, demodulator for AM

and FM, stereo decoder, quality detection, ISS

filter and PLL synthesizer with IF counter on a

single chip. Use of BICMOS technology allows the

implementation of several tuning functions and a

minimum of external components.

LQFP64

Table 1.

Device summary

Order code

Package

Packing

TDA7541

LQFP64 (10 x 10 x 1.4mm)

Tray

TDA7541TR

LQFP64 (10 x 10 x 1.4mm)

Tape and reel

TDA7541W

LQFP64 (14 x 14 x 1.4mm)

Tray

TDA7541WTR

LQFP64 (14 x 14 x 1.4mm)

Tape and reel

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