MC44353 MC44354 MC44355
Figure 18. Typical Application
30 V
V
CCT
C22
0.1
R10
R11
560 k
240 k
Ω
MC44353
4.0 MHz
Cx
1
20
Amp In
Op Out
Xtal
C21
330 pF
C20
0.01
C19
0.0047
(Note 1)
2
3
19
18
17
16
15
14
13
12
11
SDA
SCL
SDA
SCL
High
Speed
Bus
V
CCD
C18
0.1
R9
C17
0.001 (Note 2)
4
47 kΩ
Gnd
Mod Gnd
C6
0.1
R3
5
4.7
Ω
D3
L1
6.8 nH
(Note 3)
5.0 V
C7
Osc1
V
Mod
CC
HVU202A
(Note 4)
6
Osc2
RF Out
TV Out
C5
0.001
C16
0.001 (Note 2)
R8
7
75 Ω ±1%
R2
47 k
Ω
Gnd
Mod Gnd
Video
10 µf
R6
33 k
8
Ω
Snd Filt
Snd Tun
Pre–Em
Video In
C3
0.01
9
C14, 15
C13
0.022
V
CCA
0.22
C4
0.1
C12
0.0022
10
R5
220 k
Audio In
Audio
Ω
R4
100 k
C1, 2
0.2
R1
1.0 k
R7
220 k
HVUR17 HVUR17
Ω
C10
0.1
C8
100 pF
D1
D2
(Note 5)
C11
C9
220 pF
L2
27
≈
µ
H(Note 4)
NOTES: 1. Cx depends on Crystal Load Capacitance, Crystal resistance < 200 Ω.
2. Tubular 0603 1.0 nF capacitors.
3. L1 is a 2 turn air coil.
4. L2 and R3 are non–surface mount components. Note L2 quality factor should be high enough to keep the
sound carrier at the typical level Q min @ 5.5 MHz = 43, Q min @ 6.0 MHz = 40, and Q min @ 6.5 MHz = 37.
5. C11 and L2 are selected to control the sound carrier center frequency and its tuning range.
6. D1 and D2 are hyper–abrupt varactor. Minimum capacitance ratio between 1.0 and 4.5 V is C1/C4.5 = 5.6
to cover the full frequncy range. (C @ 1.0 V = 50 pF min)
Modifications to the application layout (Figures 19 through
21) will have an effect on the overall application
performances. The most sensitive areas are around the UHF
Oscillator and RF Output (Pins 4 to 7 and Pins 14 to 17) so
care must be taken to reproduce a similar PCB layout in the
final application.
14
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
