參數(shù)資料
型號: TB1311AFG
元件分類: 信號分離
英文描述: SYNC SEPARATOR IC, PQFP80
封裝: 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù): 20/46頁
文件大?。?/td> 948K
代理商: TB1311AFG
TB1311AFG
2006-05-29
27
0
10
20
30
40
50
0
20406080
100
120
BANDWIDTH data
C
ut
off
f
re
qu
e
nc
y(
-3
dB
po
in
t)
[
MH
z]
fo SW = high
fo SW = low
fo SW = high, fc HALF = on
fo SW = low, fc HALF = on
127
Fig. Typical cutoff frequency (-3 dB point) characteristics of prefilter
0
50
100
150
200
250
0
20406080
100
120
BANDWIDTH data
D
el
ay
ti
m
e
[n
s]
fo SW = high
fo SW = low
fo SW = high, fc HALF = on
fo SW = low, fc HALF = on
127
Fig. Typical delay-time (group delay @ 1 MHz) characteristics of prefilter
Recommended crystal oscillator
When a connected crystal oscillator is used for the XO, the following oscillation specifications are required.
Oscillation frequency (fundamental): 3.579545 MHz (for NTSC decoding)
Frequency tolerance: +/- 50 ppm
External CW input into crystal oscillator pin
Instead of connecting a crystal oscillator, it is possible to input an external CW (Continual Wave) into pin 28 through a
capacitor as below.
The required specs on the CW are as follows.
Input frequency (fundamental): 3.579545 MHz +/- 50 ppm
Input amplitude: 1.0Vp-p +/- 0.5Vp-p
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