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J6
PAL 1
PAL 2
SECAM
NTSC
Carrier
Frequency
Frequency
(MHz)
Picture
Sound
38.90
39.50
38.90
45.75
58.75
Intercarrier
Intercarrier
Frequency
(MHz)
6.5
6.0
5.5
4.5
5.5 to 6.5
MOTOROLA ANALOG IC DEVICE DATA
Downloaded from
Elcodis.com
electronic components distributor
Figure 28. Printed Circuit Board Evaluation Circuit
SMB–1 Sound Intercarrier
Output, Sound Input (FM)
V CC
(AC Couple)
R V1
10 k
Volume
C3
R3
J3
0.1
J4
27 k
Audio
Input
SW4
TP3
1
R4
750
C5
12 V
0.002
R6
SMB–2
1.0 k
Video
Output
Q1
2N4402
L1
R31
FL1
1.0 µH
0 Ω
SMB–3
IF Input
1
4
R33
82
2
5
SW2
3
J11
V CC
4
R9
3
2.4 k
R10
2
2.7 k
SW1
J12
V CC
R11
1
1
5.1 k
R13
2
1.0 k
J13
TP2
R15
2.7 k
R12
TP1
V CC
12 V
R20
3
7
R V3
R18
R16
560
6
3.0 k
10 k
8.2 k
4
2
R17
U2
200
AFT
MC33171
R19
Gain
27 k
Table 3. Suggested Components Values for Figure 28
SAW
SAW
Filter
Filter
FL1
Siemens #
32.40
B39389–K2951–M100
33.50
B39395–J1953–M100
33.40
B39389–K2951–M100
41.25
B39458–M1963–M100
54.25
B39588–N1951–M100
Ceramic
Ceramic
Filter
Filter
C27
Murata Erie #
SFE6.5MBF
SFE6.0MBF
SFE5.5MBF
SFE4.5MBF
–
MC44302A
DC Volume
Intercarrier
1
Control
Sound Output
C1
0.01
Sound Input
Audio Output
2
(FM)
(Variable)
Audio Input/
3
Quadrature
Audio–Video Switch
R2
Coil (FM)
J5
22 k
Sound
4
De–Emphasis (FM)
C4
0.0033
Negative Video
Audio Output
5
Constant)
Output
R5
1.0 k
Positive Video
Sound Input
6
Output
J8
Sound AFT Filter/
7
C8
Peak White Filter
10
Video IF
8
VCO Coil
Input
R8
560
Video IF
9
VCO Coil
Input
Video Mode
PLL Filter
10
Switch
(Main VCO Loop)
C9
3.3
AFT
Lock Detector/Filter
11
Output
(Aquisition Circuit)
AFT Mode
12
V CC
Switch
Video Input
R14
RF AGC
10 k
Horizontal PLL Filter
13
Output
J14
Video IF
14
C10
AGC Filter
0.1
J15
AFT
C11
Output
G1 thru G9
0.01
to Tuner
Video IF
Coilcraft #
R4715–A
R4715–A
R4715–A
M1300–A
TKANSAS–T1390HK
R4714–A
Sound IF
Quadrature Components
Coil
Coil
L3
Coilcraft #
(µH)
90–23
6.8
90–25
10
90–25
10
90–27
15
90–29
22
R30
C27
1.0 k
28
C26
68 pF
27
J27
J26
R29
V S = 12 V
Sound
22
26
L3
C25
R28
V CC
25
C23
C24
D1
0.01
330
1N4733A
5.1 V
24
J24
R32
C21
22
0.001
23
(AM)
J22
J23
C22 1.0
Gnd
22
C20
21
V CC
L4
R25
20
560
J20
C19
19
C18
R24
0.01
220
C17
18
J19
0.1
C16
0.1
Flyback/
17
C15
J17
J18
0.022
16
C13
J16
0.68
RF AGC
C14
15
Delay
C12
0.05
V CC
0.01
R22
6.2 k
RF
R V2
AGC
1.0 k
Delay
R21
4.3 k
VCO Components
Coil
Coil
L4
Toko #
(µH)
–
1.9 to 3.3
–
1.9 to 3.3
–
1.9 to 3.3
1.4 to 2.6
–
0.8 to 1.5
Capacitor
Capacitor
C25
(pF)
75
56
68
62
15
SW3
2
1
R27
47
V CC
J21
R26
2.0 k
C7
47 pF
C6
R7
0.1
330 k
R23
1.5 k
Capacitors
Capacitors
C19, C20
(pF)
39
39
39
33
47
Resistor
Resistor
R28
(kΩ)
10
10
10
10
10
25
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