TDA7540B datasheet(1/75 Pages) STMICROELECTRONICS

Il numero della parte	TDA7540B

Spiegazioni elettronici	AM/FM Car Radio Tuner IC with Stereo Decoder and Intelligent Selectivity System (ISS)

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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May 2006

Rev 1

1/75

75

TDA7540B

AM/FM Car Radio Tuner IC with Stereo Decoder and

Intelligent Selectivity System (ISS)

Features

FM-Part

■ RF AGC generation by RF and IF detection

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

rejection

■ Mixer for 2nd IF 450kHz

■ Internal 450KHz bandpass filter with bandwidth

control by ISS

■ Fully integrated FM-demodulator with spike

cancellation

AM-Part

■ Wide and narrow AGC generation

■ Mixer for 1st IF 10.7MHz, AM upconversion

■ Mixer for 2nd IF 450kHz, AM downconversion

■ Integrated AM-demodulator

■ AM IF- and audio noise blanking

Stereodecoder

■ 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

■ Internal noise blanker with several threshold

controls

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

■ All functions I2C-Bus controlled

Description

The TDA7540 is a high performance tuner circuit

for AM/FM car radio. It contains mixer, IF

amplifier, demodulator for AM and FM,

stereodecoder, 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.

Order codes

TQFP80

Part number

Temp range,

°CPackage

Packing

TDA7540B

-40 to 85

TQFP80

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