EL1883IS Intersil, EL1883IS Datasheet - Page 3

• Manufacturer Part Number: EL1883IS
• Description: IC VIDEO SYNC SEPARATOR 8-SOIC
• Manufacturer: Intersil
• Type: Synchronous Separatorr

Specifications of EL1883IS

• Applications: Drivers, Communications, PCMCIA
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Pin Descriptions
NOTE: R
Typical Performance Curves
PIN NUMBER
1
2
3
4
5
6
7
8
FIGURE 3. HORIZONTAL SYNC WIDTH vs R
FIGURE 1. R
SET
900
800
700
600
500
400
300
200
100
0
7
6
5
4
3
2
1
0
100
must be a 1% resistor
10
V
T
A
DD
= 25°C
Composite Sync Out
= 3V, V
Composite Video In
200
Vertical Sync Out
Burst/Back Porch
Horizontal Output
20
SET
RSET (Note)
PIN NAME
VDD 5V
DD
Output
300
vs HORIZONTAL FREQUENCY
GND
FREQUENCY (kHz)
= 5V, T
30
400
R
3
SET
A
40
= 25°C
(kΩ)
500
V
DD
Composite sync pulse output; sync pulses start on a falling edge and end on a rising edge
AC coupled composite video input; sync tip must be at the lowest potential (positive picture phase)
Vertical sync pulse output; the falling edge of vert sync is the start of the vertical period
Supply ground
Burst/back porch output; low during burst portion of composite video
An external resistor to ground sets all internal timing; a 681k 1% resistor will provide correct timing for
NTSC signals
Horizontal output; falling edge active
Positive supply (5V)
=3V
50
600
V
DD
=5V
60
700
SET
800
70
EL1883
FIGURE 2. BURST/BACK PORCH DELAY vs R
FIGURE 4. BURST/BACK PORCH WIDTH vs R
PIN FUNCTION
300
250
200
150
100
200
4.5
3.5
2.5
1.5
0.5
50
0
4
3
2
1
0
100
100
T
T
A
A
= 25°C
= 25°C
200
300
300
400
R
R
V
SET
SET
DD
500
=5V
(kΩ)
(kΩ)
500
V
DD
=5V
600
V
DD
700
=3V
V
DD
700
=3V
SET
SET
800
900