TDA7541 Datasheet, PDF (8/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system

Pin connection and pin description
TDA7541
Table 2. Pin description (continued)
Pin No.
Pin name
5
WB
6
AMMIX1REF
7
AMPINDR
8
FMMIX1IN1
9
GNDRF
10
FMMIX1IN2
11
TV
12
FMPINDR
13
FMAGCTC
14
VCOB
15
VCOE
16
VCCVCO
17
GNDVCO
18
LPOUT
19
VREF2
20
LPF
21
LPHC
22
SW
23
MUX
24
SSTOP
25
SDA
26
SCL
27
FSU
28
FSTC
29
XTALG
30
ISSTC1
31
ISSTC2
32
XTALD
33
GNDVCC1
34
L
35
R
36
VCC1
37
FSWO
38
GNDSTD
39
MPTC
Function
Weather Band Input
AM Mixer1 Reference
AM Pin Diode Driver Output
FM Mixer1 Input1
RF Ground
FM Mixer1 Input2
Tuning Voltage Preselection
FM Pin Diode Driver Output
FM AGC Time Constant
VCO Input Base
VCO Output Emitter
VCO Supply
VCO Ground
OpAmp Output to PLL Loop Filter
Voltage Reference for PLL OpAmp
OpAmp Input to PLL Loop Filter
High Current PLL Loop Filter Input
Free Programmable Switch Output
Multiplexer Output
Search Stop Output
I²C Bus Data
I²C Bus Clock
Unweighted Field Strength Output
S-meter Filtering Capacitor
Xtal Oscillator to MOS Gate
ISS Filter Time Constant1 (slow)
ISS Filter Time Constant2 (fast)
Xtal Oscillator to MOS Drain
Digital Ground
Stereo Decoder Output Left
Stereo Decoder Output Right
Digital Supply
Weighted Field Strength Output
Stereo Decoder Ground
Multipath Detector Time Constant
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