參數(shù)資料
型號: TDA8501T
廠商: NXP SEMICONDUCTORS
元件分類: 顏色信號轉(zhuǎn)換
英文描述: PAL/NTSC encoder
中文描述: COLOR SIGNAL ENCODER, PDSO24
封裝: PLASTIC, SOT-137AH1, 24 PIN
文件頁數(shù): 19/30頁
文件大?。?/td> 238K
代理商: TDA8501T
April 1993
19
Philips Semiconductors
Preliminary specification
PAL/NTSC encoder
TDA8501
Notes
1.
The threshold level of this pin is 700 mV
±
20 mV. The specification of the HIGH and LOW levels is according to the
SCART fast blanking.
Pin 20 condition: black level of input signal must be 2.5 V; amplitude 0.5 V (peak-to-peak) nominal.
Definition: maximum phase
minimum phase = difference phase
2.
3.
4.
Definition:
5.
The output impedance of this pin is low (
<
100
). The nominal value of the external resistor is 196 k
(see also
section Sync separator and Pulse shaper).
The threshold levels are: 0.25 times V
CC
, 0.5 times V
CC
and 0.75 times V
CC
.
6.
Control pin PAL/NTSC and Y/Y
+
SYNC (pin 17; note 6)
V
I
PAL mode and blanking pin 5
active
internal sync added to Y
V
I
PAL mode and blanking pin 5
inactive
internal sync not added to Y
V
I
NTSC mode and blanking pin 5
active
internal sync added to Y
V
I
NTSC mode and blanking pin 5
inactive
internal sync not added to Y
I
bias
input bias current
0
1
V
1.6
2.0
V
4
5
V
3
3.4
V
10
μ
A
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
maximum gain
minimum gain
maximum gain
100
×
difference gain %
=
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