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TDA7515

July 2002

This is preliminary information on a new product now in development. Details are subject to change without notice.

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RF AGC generation by RF and IF detection

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I/Q Mixer for FM IF 10.7MHz with image

rejection and programmable IF tank adjust for

FM and AM

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Preamplifier and mixer for IF 10.7MHz AM

upconversion

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VCO and programmable divider for “world

receiver”

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Programmable controlled IF-gain stage

Additional features:

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High performance fast PLL for RDS-system

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Electronic alignment for the preselection stages

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All functions bus-controlled

DESCRIPTION

The frontend is a high performance tuner circuit for

AM/FM - DSP carradios with 10.7MHz - IF sampling.

It contains mixer and IF amplifiers for AM and FM,

VCO and PLL synthesizer on a single chip.

Use of BICMOS technology allows the implementa-

tion of several tuning functions and a minimum of ex-

ternal components.

TQFP44

ORDERING NUMBER: TDA7515

PRODUCT PREVIEW

RF-FRONTEND FOR AM/FM-DSP-CARRADIOS

WITH IF SAMPLING

1

BLOCK DIAGRAM

AGC

DIV

1/4

1/8

1/6

1/10

:1/:2/:3

VCO

PLL

LPOUT

LPAM

LPFM

LPHC

REFDIV

AGC

ADJ

Supply

Bus

Interface

AGC

I

Q

2

TV1

TV2

IF 10.7MHz

DAGC

FM

AM

PM

PM

00AT0037

2

2

Fref

18/100kHz

2

2

optional

2