TDA7512 Datasheet, PDF (1/42 Pages) STMicroelectronics – AM/FM CAR RADIO TUNER IC WITH INTELLIGENT SELECTIVITY SYSTEM ISS

TDA7512
AM/FM CAR RADIO TUNER IC WITH INTELLIGENT
SELECTIVITY SYSTEM (ISS)
PRELIMINARY DATA
FM-PART
s RF AGC GENERATION BY RF AND IF
DETECTION
s I/Q MIXER FOR 1ST FM IF 10.7MHz WITH
IMAGE REJECTION
s 2 PROGRAMMABLE IF-GAIN STAGES
s MIXER FOR 2^nd IF 450KHz
s INTERNAL 450KHz BANDPASS FILTER WITH
THREE BANDWIDTHS CONTROLLED BY ISS
s FULLY INTEGRATED FM-DEMODULATOR
WITH NOISE CANCELLATION
TQFP64
ORDERING NUMBER: TDA7512
AM-PART
s WIDE AND NARROW AGC GENERATION
s PREAMPLIFIER AND MIXER FOR 1ST IF
10.7MHz, AM UPCONVERSION
s MIXER FOR 2^nd IF 450KHz
s INTEGRATED AM-DEMODULATOR
s OUTPUT FOR AM-STEREO-DECODER
ADDITIONAL FEATURES
s VCO FOR WORLD TUNING RANGE
s HIGH PERFORMANCE FAST PLL FOR RDS-
SYSTEM
s IF COUNTER FOR FM AND AM WITH
SEARCH STOP SIGNAL
s QUALITY DETECTOR FOR LEVEL,
DEVIATION, ADJACENT CHANNEL AND
MULTIPATH
s QUALITY DETECTION INFORMATIONS AS
ANALOG SIGNALS EXTERNAL AVAILABLE
s ISS (INTELLIGENT SELECTIVITY SYSTEM)
FOR CANCELLATION OF ADJACENT
CHANNEL AND NOISE INFLUENCES
s ADJACENT CHANNEL MUTE
s FULLY ELECTRONIC ALIGNMENT
s ALL FUNCTIONS I²C-BUS CONTROLLED
s ISS FILTER STATUS INFORMATION I²C-BUS
READABLE
DESCRIPTION
The TDA7512 is a high performance tuner circuit for
AM/FM car radio. It contains mixer, IF amplifier, de-
modulator for AM and FM, quality detection, ISS filter
and PLL synthesizer with IF counter on a single chip.
Use of BICMOS technology allows the implementa-
tion of several tuning functions and a minimum of ex-
ternal components.
September 2003
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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