Document
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 nd s MIXER FOR 2 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 nd s MIXER FOR 2 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 RDSSYSTEM 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
s s s s
ISS (INTELLIGENT SELECTIVITY SYSTEM) FOR CANCELLATION OF ADJACENT CHANNEL AND NOISE INFLUENCES ADJACENT CHANNEL MUTE FULLY ELECTRONIC ALIGNMENT ALL FUNCTIONS I2C-BUS CONTROLLED 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, demodulator for AM and FM, 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.
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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TDA7512
BLOCK DIAGRAM
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TDA7512
PIN CONNECTION (Top view)
AMMIX2OUT1 AMMIX2OUT2 AMRFAGCTC FMAMP1OUT FMAMP2OUT FMIF1AGCIN AMIF1IN/ISS
FMAMP1IN
FMAMP2IN
MIX1OUT1
MIX1OUT2
FMIF1REF
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 AMMIX1IN2 AMMIX1IN1 AMRFAGCIN AMRFAGCOUT AMPINDR FMPINDR FMMIX1IN1 GNDRF FMMIX1IN2 FMAGCTC TV1 TV2 ADJCH FSU ISSTC VCCVCO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 XTALD GNDVCC3 SSTOP SDA SCL VCC3 LPOUT VREF2 LPAM LPFM GNDVCO DEVTC XTALG VCOB VCOE LPHC 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 VREF1 GNDDEM FMMIX2IN1 FMMIX2IN2 REFDEMC FM/AM AMIF2IN MUTETC AMDETC AMAGC2TC AMIFBPF AMIFREF MPX/AFAM VCC1 FSW AMST/MP GNDVCC1
GNDVCC2
TQFP64
GNDIF1
VCCIF1
PIN DESCRIPTION
N°
1 2 3 4 5 6 7 8 9 10 11 12 13
Pin Name
AMMIX1IN2 AMMIX1IN1 AMRFAGCIN AMRFAGCOUT AMPINDR FMPINDR FMMIX1IN1 GNDRF FMMIX1IN2 FMAGCTC TV1 TV2 ADJCH AM Input2 Mixer1 AM Input1 Mixer1 Input AM RF AGC Output AM RF AGC AM PIN Diode Driver Output FM PIN Diode Driver Output FM Input1 Mixer1 RF Ground FM Input2 Mixer1 FM AGC Time Constant Tuning Voltage Preselection1 Tuning Voltage Preselection2 Ident. Adjacent Channel Output
Function
VCC2
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TDA7512
PIN DESCRIPTION (continued)
N°
14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
Pin Name
FSU ISSTC.