參數(shù)資料
型號: MC44BC375UEF
廠商: Freescale Semiconductor
文件頁數(shù): 7/20頁
文件大?。?/td> 0K
描述: IC A-VHF MODULATOR 16-SOIC
標(biāo)準(zhǔn)包裝: 48
類型: 調(diào)制器
應(yīng)用: 機(jī)頂盒
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOIC N
包裝: 管件
MC44BC375U Application Schematic
MC44BC375/U/J/T Technical Data
14 MC44BC375U Application Schematic
Figure 4. MC44BC375U Application Schematic
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2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PS1/2
4MHz
Vcc
TVOUT
Pre-em
O
Audio
O
Video
LOP
O
10nF
220nF
330nF
1nF
100nF
Cx***
22nF
C1
Vcc
O
75*
1nF
O
Select
CH 3/4
Select
O
Psave/LO
O
10k
This document contains information
Motorola reserves the right to change
or discontinue this product without notice
on a new product under development
O
SFS
Select
*: This 75
is to match with a 75 video signal applied thru coaxial cable.
2.2k
47nF
22nF
Loop Filter must
be as close as
10nF
R1 and R2 are to reduce video modulation depth from typical value
It can be removed in case of high impedance video generator.
Cx is dependant on the crystal characteristics (Cx=27pF on Motorola application Board)
R2**
R1**
(for example R1=1K
and R2=10K reduce VMD by about 8%)
C1 value depends on standard: 470pF is for 50
s pre-emphasis time constant (B/G standard)
and 750pF is for 75
s (M/N standard).
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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PDF描述
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