參數(shù)資料
型號: EL4581CN
英文描述: Sync Separator, 50% Slice, S-H, Filter
中文描述: 同步分離器,50%的切片,上海,過濾器
文件頁數(shù): 6/12頁
文件大?。?/td> 209K
代理商: EL4581CN
EL4581C
Sync Separator 50% Slice S-H Filter
Dynamic Characteristics
VDD e 5V IV pk-pk video TA e 25 C CL e 15 pF IOH eb16 mA IOL e 16 mA Signal voltages are peak to peak
Parameter
Description
Temp
Min
Typ
Max
Test
Units
Level
Vertical Sync Width tVS
(Note 3)
25 C
190
230
300
I
ms
BurstBack Porch Width tB
(Note 3)
25 C
25
35
45
I
ms
Vertical Sync Default Delay tVSD
25 C40
55
70
I
ms
Filter Attenuation
FIN e 34 MHz (Note 4)
25 C24
V
dB
Composite Sync Prop Delay
VINb Composite Sync
25 C
260
400
I
ns
(Note 3)
Input Dynamic Range
p-p NTSC Signal
25 C
05
2
I
V
(Note 5)
Slice Level
Input Voltage e 1VP-P
25 C
40%
50%
60%
I
(Note 6)
Full
40%
50%
60%
IV
Note 3 CS Vertical and Burst outputs are all active low b VOH e 24V VOL e 08V
Note 4 Attenuation is a function of Rset (PIN6)
Note 5 Typical min is 03 VP-P
Note 6 Refers to threshold level of sync tip to back porch amplitude
Pin Descriptions
Pin No
Pin Name
Function
1
Composite Sync Out
Composite sync pulse output Sync pulses start on a falling edge and end on a rising edge
2
Composite Video in
AC coupled composite video input Sync tip must be at the lowest potential (Positive
picture phase)
3
Vertical Sync Out
Vertical sync pulse output The falling edge of Vert Sync is the start of the vertical period
4
GND
Supply ground
5
BurstBack Porch Output
BurstBack porch output Low during burst portion of composite video
6RSET
An external resistor to ground sets all internal timing 681k 1% resistor will provide correct
timing for NTSC signals
7
OddEven Output
OddEven field output Low during odd fields high during even fields Transitions occur at
start of Vert Sync pulse
8VDD 5V
Positive supply (5V)
Note RSET must be a 1% resistor
3
TD
is
20in
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