mc44bc375 Freescale Semiconductor, Inc, mc44bc375 Datasheet - Page 15

• Manufacturer Part Number: mc44bc375
• Description: Pll Tuned Vhf Audio/ Video High Integration Modulator Ics
• Manufacturer: Freescale Semiconductor, Inc

14 MC44BC375U Application Schematic
MOTOROLA
*: This 75
R1 and R2 are to reduce video modulation depth from typical value
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).
It can be removed in case of high impedance video generator.
(for example R1=1K
100nF
LOP
Audio
Pre-em
Ω
4MHz
O
is to match with a 75
22nF
Select
PS1/2
C1
O
Cx***
Ω
Figure 4. MC44BC375U Application Schematic
Freescale Semiconductor, Inc.
330nF
10k
and R2=10K
For More Information On This Product,
Select
O
CH 3/4
MC44BC375/U/J/T Technical Data
Ω
video signal applied thru coaxial cable.
1
2
3
4
5
6
7
8
Go to: www.freescale.com
Ω
Psave/LO
reduce VMD by about 8%)
16
15
14
13
12
11
10
9
Select
SFS
O
O
10nF
22nF
Video
Loop Filter must
be as close as
1nF
R1**
R2**
MC44BC375U Application Schematic
75*
This document contains information
on a new product under development
Motorola reserves the right to change
or discontinue this product without notice
O
1nF
47nF
TVOUT
2.2k
220nF
10nF
Vcc
Vcc
15