TDA7528 データシートの表示（PDF） - STMicroelectronics

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TDA7528

AM/FM car radio Front-End receiver for IF sampling tuners

STMicroelectronics 

TDA7528

AM/FM car radio Front-End receiver for IF sampling tuners

Data Brief

Feature summary

■ High-performance AM/FM front-end chip for if

sampling car-radio tuners

■ Compatible with AM (LW, MW, SW) / FM (EU,

US, JAPAN, OIRT) / WEATHER BAND / HD

radio / DRM applications

■ Ready for multi-tuner applications (phase

diversity, background tuner)

■ Image rejection FM mixer with dual input

specialized for different front-end circuits

■ Integrated AM preamplifier and tank for lower-

cost applications

■ Image rejection AM mixer

■ Fully integrated fractional tuning PLL with two

VCO's for diversity systems

■ world tuning-capable

■ Integrated if tank

■ If amplifier with agc with four inputs for

connection of up to four ceramic filters

■ Fully electronically adjustable

■ I2C /SPI controlled

Description

The TDA7528 is a frontend module for use in car

radio receivers on the 50kHz - 108MHz and

161MHz - 163 MHz frequency bands. Its field of

use includes all the current radio broadcast

services worldwide for AM radio (long, medium

and short wave), FM radio (US, European,

Japanese and OIRT bands) and US weather

band. Digital standards such as DRM and HD

radio (IBOC) can also be handled.

LQFP64

The system is designed to be single super-

heterodyne with an intermediate frequency of

10.7 MHz. The IF signal is digitized, filtered and

demodulated in the appropriate STA3005

backend IC.

The combination of two independently-operating

frontends with the STA3005 backend makes DDA

(Digital Directional Antenna) operation possible or

the simultaneous reception of two freely-

selectable frequencies with any combination of

types of demodulation.

The TDA7528 frontend IMR mixer has separate

input and output stages for AM frequency bands

up to 30MHz (narrowband services) and for FM

frequencies above 30MHz (broadband signals).

As an option, the AM path can be operated with

an integrated preamplifier stage and an integrated

low-pass filter to reduce interfering input signals

on the IF and image frequencies. The FM mixer

has two inputs: the more sensitive (lower noise)

input is intended for use with a low-gain, passive

pre-selection stage; the second input is intended

for use with an active preamplifier stage yielding a

high level signal calling for a higher IP3.

Order codes

Part number

TDA7528

Package

LQFP64

Packing

Tube

June 2006

Rev 1

For further information contact your local STMicroelectronics sales office.

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www.st.com

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