EL1881CN

Overview

The EL1881CN is a video sync separator manufactured using Elantec’s high-performance analog CMOS process. It extracts sync timing information from standard and non-standard video inputs, providing composite sync, vertical sync, burst/back porch timing, and odd/even field detection. The device features fixed 70mV sync tip slicing for edge detection when the video input level ranges between 0.5VP-P and -2VP-P, corresponding to a sync tip amplitude of 143mV to 572mV. A single external resistor sets all internal timing parameters to accommodate various video standards. It operates on a single +5V supply with a typical low supply current of 1.5mA.

Feature Summary

• Extracts sync timing information from both standard and non-standard video inputs
• Provides composite sync, vertical sync, burst/back porch timing, and odd/even field detection outputs
• Features fixed 70mV sync tip slicing for reliable sync edge detection across specified input levels
• Utilizes a single external resistor to configure internal timing for different video standards

Applications

• Video amplifiers
• PCMCIA applications
• A/D drivers
• Line drivers
• Portable computers

Procurement Notes

Verify the manufacturer source, as the EL1881CN has been produced by multiple entities including Elantec Semiconductor, Intersil Corporation, and Renesas Technology Corp. Confirm that the specific package type matches the 'N' suffix designation, which typically indicates an 8-pin PDIP configuration. Ensure the component meets the required voltage and current specifications for your target circuit design before procurement.

Selection Notes

Select this component when a low-power solution is required for extracting sync signals from composite video sources. It is suitable for applications requiring simultaneous access to composite, vertical, and field detection signals. The single-resistor timing adjustment offers flexibility for adapting to various video standards without complex external circuitry. Consider the available packaging options if space constraints exist in the final assembly.

Part Context

The EL1881CN belongs to the EL1881 series of video sync separators. This series includes variants such as the EL1881CS, which shares similar functional characteristics but may differ in package style. The device is part of Elantec's portfolio of analog CMOS solutions designed for video signal processing tasks. It serves as a specialized interface component for converting composite video signals into discrete timing pulses for further digital processing or display control.

FAQ

How is the internal timing configured for different video standards?

All internal timing parameters are set using a single external resistor, allowing the device to adjust for various video standards.

What is the operating supply voltage requirement?

The device requires a single +5V power supply to operate.

Does the device support non-standard video inputs?

Yes, the EL1881CN can extract sync timing information from both standard and non-standard video inputs.