参数资料
型号: EL1883IS-T7
厂商: Intersil
文件页数: 3/9页
文件大小: 0K
描述: IC VIDEO SYNC SEPARATOR 8-SOIC
标准包装: 1,000
类型: 同步分离器
应用: 驱动器,通信,PCMCIA
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 带卷 (TR)
3
Pin Descriptions
PIN NUMBER
PIN NAME
PIN 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
Burst/Back Porch
Output
Burst/back porch output; low during burst portion of composite video
6
RSET (Note)
An external resistor to ground sets all internal timing; a 681k 1% resistor will provide correct timing for
NTSC signals
7
Horizontal Output
Horizontal output; falling edge active
8
VDD 5V
Positive supply (5V)
NOTE: RSET must be a 1% resistor
Typical Performance Curves
FIGURE 1. RSET vs HORIZONTAL FREQUENCY
FIGURE 2. BURST/BACK PORCH DELAY vs RSET
FIGURE 3. HORIZONTAL SYNC WIDTH vs RSET
FIGURE 4. BURST/BACK PORCH WIDTH vs RSET
VDD = 3V, VDD = 5V, TA = 25°C
10
20
30
40
50
60
70
FREQUENCY (kHz)
900
800
700
600
500
400
300
200
100
0
R
SET
(k
)
TA = 25°C
VDD=3V
VDD=5V
100
200
300
400
500
600
800
RSET (k)
700
300
250
200
150
100
50
200
0
B
URS
T
BACK
P
O
RCH
DELA
Y
(ns)
VDD=3V
VDD=5V
TA = 25°C
100
200
300
400
500
600
800
RSET (k)
700
7
6
5
4
3
2
1
0
HORIZONT
AL
SYNC
WID
T
H
(s)
TA = 25°C
100
300
500
900
RSET (k)
700
4.5
4
3.5
3
2.5
2
1
0
BURST
B
ACK
PORCH
WIDTH
(s)
1.5
0.5
VDD=5V
VDD=3V
EL1883
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