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TDA7512
September 2003
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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
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 I
2
C-BUS CONTROLLED
s
ISS FILTER STATUS INFORMATION I
2
C-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.
TQFP64
ORDERING NUMBER: TDA7512
PRELIMINARY DATA
AM/FM CAR RADIO TUNER IC WITH INTELLIGENT
SELECTIVITY SYSTEM (ISS)
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TDA7512
PIN CONNECTION (Top view)
PIN DESCRIPTION
N
Pin Name
Function
1
AMMIX1IN2
AM Input2 Mixer1
2
AMMIX1IN1
AM Input1 Mixer1
3
AMRFAGCIN
Input AM RF AGC
4
AMRFAGCOUT
Output AM RF AGC
5
AMPINDR
AM PIN Diode Driver Output
6
FMPINDR
FM PIN Diode Driver Output
7
FMMIX1IN1
FM Input1 Mixer1
8
GNDRF
RF Ground
9
FMMIX1IN2
FM Input2 Mixer1
10
FMAGCTC
FM AGC Time Constant
11
TV1
Tuning Voltage Preselection1
12
TV2
Tuning Voltage Preselection2
13
ADJCH
Ident. Adjacent Channel Output
1
2
3
5
6
4
7
8
9
10
27
11
28 29 30 31 32
59 58 57 56
54
55
53 52 51 50 49
43
42
41
39
38
40
48
47
46
44
45
FMPINDR
AMPINDR
AMRFAGCOUT
AMMIX1IN1
AMMIX1IN2
AMRFAGCIN
TV1
FMAGCTC
FMMIX1IN2
FMMIX1IN1
GNDRF
XTALD
GNDVCC3
SSTOP
SDA
VCC3
SCL
LPOUT
VREF2
LPAM
LPFM
LPHC
GNDIF1
AMIF1IN/ISS
FMAMP1IN
AMMIX2OUT1
FMAMP1OUT
AMMIX2OUT2
FMIF1REF
FMAMP2IN
VCC2
FMAMP2OUT
GNDVCC2
AMIF2IN
MUTETC
AMDETC
AMIFBPF
AMIFREF
AMAGC2TC
VREF1
GNDDEM
FMMIX2IN1
REFDEMC FM/AM
FMMIX2IN2
TQFP64
22 23 24 25 26
60
FMIF1AGCIN
61
VCCIF1
62
AMRFAGCTC
63
MIX1OUT2
64
MIX1OUT1
GNDVCO
VCOB
VCOE
DEVTC
XTALG
17 18 19 20 21
37
36
34
33
35
MPX/AFAM
VCC1
AMST/MP
GNDVCC1
FSW
12
13
14
15
16
VCCVCO
ISSTC
FSU
TV2
ADJCH
TDA7512
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14
FSU
Unweighted Fieldstrength Output
15
ISSTC
Time Constant for ISS Filter Switch
16
VCCVCO
VCO Supply
17
GNDVCO
VCO Ground
18
VCOB
VCO Input Base
19
VCOE
VCO Output Emitter
20
DEVTC
Deviation Detector Time Constant
21
XTALG
Xtal Oscillator to MOS Gate
22
XTALD
Xtal Oscillator to MOS Drain
23
GNDVCC3
VCC3 Ground
24
SSTOP
Search Stop Output
25
SDA
I
2
C-Bus Data
26
SCL
I
2
C-Bus Clock
27
VCC3
Supply Tuning Voltage
28
LPOUT
Op Amp Output to PLL Loop Filters
29
VREF2
Voltage Reference for PLL Op Amp
30
LPAM
Op Amp Input to PLL Loop Filters AM
31
LPFM
Op Amp Input to PLL Loop Filters FM
32
LPHC
High Current PLL Loop Filter Input
33
GNDVCC1
Digital Ground
34
AMST/MP
AM Stereo Out / Ident. Multipath Output
35
FSW
Weighted Fieldstrength Output
36
VCC1
Digital Supply
37
MPX/AFAM
MPX Output / AM AF Output
38
AMIFREF
Reference Voltage AM IF Amp
39
AMIFBPF
AM IF Filter
40
AMAGC2TC
AM AGC2 Time Constant
41
AMDETC
AM Detector Capacitor
42
MUTETC
Softmute Time Constant
43
AMIF2IN
Input AM IF2
44
REFDEMC FM/AM
Demodulator Reference FM/AM
45
FMMIX2IN2
FM IF1 MIX2 Input1
PIN DESCRIPTION (continued)
N
Pin Name
Function
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TDA7512
THERMAL DATA
ABSOLUTE MAXIMUM RATINGS
46
FMMIX2IN1
FM IF1 MIX2 Input2
47
GNDDEM
Ground FM Demodulator
48
VREF1
Reference 5V
49
GNDVCC2
Analog Ground
50
FMAMP2OUT
FM IF1 Amplifier2 Output
51
VCC2
Analog Supply
52
FMAMP2IN
FM IF1 Amplifier2 Input
53
FMIF1REF
FM IF1 Amplifier Reference
54
FMAMP1OUT
FM IF1 Amplifier1 Output
55
AMMIX2OUT2
AM Tank 450kHz
56
AMMIX2OUT1
AM Tank 450kHz
57
FMAMP1IN
FM IF1 Amplifier1 Input
58
AMIF1IN/ISS
AM IF1 Input/ISS filter status
59
GNDIF1
FM IF1 Ground
60
FMIF1AGCIN
FM IF1 AGC Input
61
VCCIF1
IF1 Supply
62
AMRFAGCTC
AM RF AGC Time Constant
63
MIX1OUT2
MIX Tank 10.7MHz
64
MIX1OUT1
MIX Tank 10.7MHz
Table 1.
Symbol
Parameter
Value
Unit
R
th(j-a)
Thermal resistance junction to ambient
68 max.
C/W
Table 2.
Symbol
Parameter
Value
Unit
V
S
Supply Voltage
10.5
V
T
amb
Ambient Temperature
-40 to 85
C
T
stg
Storage Temperature
-55 to +150
C
PIN DESCRIPTION (continued)
N
Pin Name
Function
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