mc44353 Freescale Semiconductor, Inc, mc44353 Datasheet - Page 14

• Manufacturer Part Number: mc44353
• Description: Multi.standard Pal/ntsc Modulator
• Manufacturer: Freescale Semiconductor, Inc

21) will have an effect on the overall application
performances. The most sensitive areas are around the UHF
14
Modifications to the application layout (Figures 19 through
330 pF
C22
C21
C14, 15
0.1
HVU202A
C10
0.22
0.1
47 k
47 k
D3
R9
R8
V CCT
30 V
NOTES: 1. Cx depends on Crystal Load Capacitance, Crystal resistance < 200 .
C13
0.0022 R4
R11
560 k
HVUR17
33 k
C12
C17
0.001 (Note 2)
C16
0.001 (Note 2)
R6
D1
100 k
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
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
C20
0.01
0.022
C11
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.
to cover the full frequncy range. (C @ 1.0 V = 50 pF min)
27 H
L2
(Note 5)
HVUR17
220 k
L1
6.8 nH
(Note 3)
(Note 4)
D2
R5
240 k
0.0047
C18
R10
C19
0.1
MC44353 MC44354 MC44355
Figure 18. Typical Application
10
1
2
3
4
5
6
7
8
9
Amp In
Op Out
V CCD
Gnd
Osc1
Osc2
Gnd
Snd Filt
Snd Tun
Pre–Em
220 k
220 pF
R7
C9
MC44353
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.
V CC Mod
Mod Gnd
Mod Gnd
RF Out
V CCA
Video
Audio
C8
100 pF
SDA
SCL
Xtal
20
19
18
17
16
15
14
13
12
11
MOTOROLA ANALOG IC DEVICE DATA
C1, 2
0.001
0.01
0.2
C5
C3
Cx
(Note 1)
4.0 MHz
C6
0.1
C4
0.1
75
R1
1.0 k
R2
1%
(Note 4)
SDA
SCL
4.7
Video In
Audio In
TV Out
R3
High
Speed
Bus
5.0 V
C7
10 f