TDA7540N Datasheet, PDF (10/76 Pages) STMicroelectronics – AM/FM car radio tuner IC with stereo decoder and intelligent selectivity system (ISS)

Pins description and connection diagrams
Table 2.
Pin #
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Pin description (continued)
Pin name
Function
GNDSTEREO
MPTC
Strereodecoder ground
Multipath time constant
MUTETC
MPXIN
Weak signal mute time constant
Stereodecoder Input
VCCSTEREO Stereodecoder supply
AFS
MPX/AFAM
Alternative frequency search drive
MPX output / AM AF output
AMIF2BPF
AMIF2REF
AM IF2 bandpass filter
Reference voltage AM IF2 amplifier
FMREFDEMC
GNDDEM
FM demodulator reference
Ground FM demodulator
MPXW
MPX Output without ISS filtering
AMIF2IN
VREF1
Input AM IF2
Reference 5V
GNDVCC2
AMMIX2OUT2
Analog ground
AM Tank 450kHz
AMMIX2OUT1
VCC2
AM Tank 450kHz
Analog supply
FMMIX2IN
FMMIX2REF
FM IF1 mixer2 input
FM IF1 mixer2 reference
AMRFAGCTC AM RF AGC time constant
IF1AMP2OUT
AMDETC
IF1 amplifier2 output
AM detector capacitor
AMREFDEMC
IF1AMP2IN
AM demodulator reference
IF1 amplifier2 input
VCCIF1
IF1AMP1OUT
IF1 supply
IF1 amplifier1 output
IF1REF
IF1AMP1IN
IF1 amplifier reference
IF1 amplifier1 input
GNDIF1
IF1 ground
IF1AGCIN
AMAGC2TC
IF1 AGC input
AM AGC2 time constant
TEST2
MIX1OUT2
Testing I/O pin
Mixer tank 10.7MHz
TDA7540N
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