EL1883
Sync Separator with Horizontal Output
Key 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)
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.
Applications
- Video amplifiers
- PCMCIA applications
- A/D drivers
- Line drivers
- Portable computers
