Freescale SemiconducMtCo4r4,BCIn37c5U. Application Schematic
14 MC44BC375U Application Schematic
PS1/2
Select
O
CH 3/4
Select
O
1
LOP
2
Cx***
3
4MHz
4
5
Pre-em C1
6
100nF
7
330nF
8
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on a new product under development
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SFS
Select
O
Loop Filter must
be as close as
47nF
22nF
16
10nF
15
2.2k
14
Vcc
13
1nF O TVOUT
12
11
Vcc
10
10nF 1nF 220nF
9
Audio
O
10k
22nF
Psave/LO
75*
R2**
R1**
Video
*: This 75Ω is to match with a 75Ω video signal applied thru coaxial cable.
It can be removed in case of high impedance video generator.
R1 and R2 are to reduce video modulation depth from typical value
(for example R1=1KΩ and R2=10KΩ reduce VMD by about 8%)
Cx is dependant on the crystal characteristics (Cx=27pF on Motorola application Board)
C1 value depends on standard: 470pF is for 50µs pre-emphasis time constant (B/G standard)
and 750pF is for 75µs (M/N standard).
Figure 4. MC44BC375U Application Schematic
MOTOROLA
MC44BC375/U/J/T Technical Data
15
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