TDA7421 Datasheet, PDF (14/38 Pages) STMicroelectronics – AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS

TDA7421
AM TEST CIRCUIT
V_MIX1AMIN
15pF
VXTAL
15pF
V_MiXOUT
330
T2
V_MiX2AMIN
T3
V_CC
12
2K
V_CC
64 63 61
60 58
57 55
54
AGC
W&N
1
2
35
2K
34
11
1M
12
+-
AGC2
DET
33
40
V_AMSD
41
V_AMSMETER
31
32
2
1
V_IF2AMPIN
V_IF2AMPOUT
D97AU803A
FM TEST CIRCUIT
V_MiXFMIN
T1
1:3.5
V_Tun
T2
V_CC
3
61
V_Tun
5K
V1
L2
22pF
1.8K
4
8
15pF
9
68pF
330
V_MIXOUT
V_FMIFAGCIN
10nF
10nF
V_FMAMP1OUT
10nF
10nF
330
10nF
V_FMAMP2OUT
10nF
330
10nF
60
59
53 52
51
330
330
-
+
50 49
48
330
330
-
+
46
330
45
10nF
10nF
V_FMLIMIN
V_FMRFAGCIN
V_FMAGCOUT
10nF
10nF
5
FM AGC
6
AUDIO
38
DEMOD
L6
37
14
15
16
40
41
39
42
31
V_AMTADJ V_RFADJ V_PLLOUT V_FMSD V_SMSHIFT VAUDIO
100K
V_MUTEDRIVE
10nF
V_SMFILT
D97AU804A
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