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  • 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.

    Key Features

    • FM-PartRF AGC generation by RF and IF detectionI/Q mixer for 1st FM IF 10.7MHz with image rejectionMixer for 2nd IF 450kHzInternal 450KHz bandpass filter with bandwidth control by ISSFully integrated FM-demodulator with spike cancellation
    • StereodecoderPLL with adjustment free, fully integrated VCOAutomatic pilot dependent MONO/STEREO switchingProgrammable ROLL-OFF compensationHigh cut and stereo blend-characteristics programmableDedicated RDS-muteInternal noise blanker with several threshold controls
    • AM-PartWide and narrow AGC generationMixer for 1st IF 10.7MHz, AM upconversionMixer for 2nd IF 450kHz, AM downconversionIntegrated AM-demodulatorAM IF- and audio noise blanking
    • Additional FeaturesVCO for world tuning rangeHigh performance fast PLL for RDS-SystemIF counter for FM and AM with search stop signalQuality detector for level, deviation, adjacent channel and multipathISS (Intelligent Selectivity System) for cancellation of adjacent channel and noise influencesAdjacent channel muteFully electronic alignmentAll functions I2C-Bus controlled

Circuit Diagram

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Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
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TDA7540B LQFP 80 14x14x1.4 Tray - -
NRND
- - EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office

TDA7540B

Package

LQFP 80 14x14x1.4

Packing Type

Tray

Unit Price (US$)

*

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

NRND

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DS4733
      AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)
      2.0
      825.01 KB
      PDF
      DS4733

      AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
TDA7540B
NRND
LQFP 80 14x14x1.4 Automotive Ecopack2

TDA7540B

Package:

LQFP 80 14x14x1.4

Material Declaration**:

PDF

Marketing Status

NRND

Package

LQFP 80 14x14x1.4

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.