MC44BC375UAD(2003) 데이터 시트보기 (PDF) - Freescale Semiconductor

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MC44BC375UAD
(Rev.:2003)

PLL Tuned VHF Audio/ Video High Integration IC (Channel 3 and 4 80 dBµV RF Level)

Freescale Semiconductor 

Freescale SemiconduMcCt4o4rB,C3I7n5cUA. Application Schematic

15 MC44BC375UA Application Schematic

This document contains information

on a new product under development

Freescale reserves the right to change

or discontinue this product without notice

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

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 Freescale 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. MC44BC375UA Application Schematic

MC44BC375UA Advance Information

For More Information On This Product,

Go to: www.freescale.com

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