Overview
Description
The EL1883 video sync separator is manufactured using Elantec's high performance analog CMOS process. This device extracts sync timing information from both standard and non-standard video input and also in the presence of Macrovision pulses. It provides composite sync, vertical sync, burst/back porch timing, and horizontal outputs. Fixed 70mV sync tip slicing provides sync edge detection when the video input level is between 0. 5VP-P and 2VP-P (sync tip amplitude 143mV to 572mV). A single external resistor sets all internal timing to adjust for various video standards. The composite sync output follows video in sync pulses and a vertical sync pulse is output on the rising edge of the first vertical serration following the vertical pre-equalizing string. For non-standard vertical inputs, a default vertical pulse is output when the vertical signal stays low for longer than the vertical sync default delay time. The horizontal output gives horizontal timing with pre/post equalizing pulses. The EL1883 is available in an 8-pin SO package and is specified for operation over the full -40°C to +85°C temperature range.
Features
- NTSC, PAL, SECAM, non-standard video sync separation
- Fixed 70mV slicing of video input levels from 0.5VP-P to 2VP-P
- Low supply current - 1.5mA typ.
- Single 3V to 5V supply
- Composite sync output
- Vertical output
- Horizontal output
- Burst/back porch output
- Macrovision compatible
- Available in 8-pin SO package
- Pb-Free plus anneal available (RoHS compliant)
Comparison
Applications
- Video amplifiers
- PCMCIA applications
- A/D drivers
- Line drivers
- Portable computers
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
