NJM2256M

Video Processing Overview

The NJM2256M is a video superimposer IC manufactured by Nisshinbo Micro Devices. It operates on a single 5V power supply with a maximum operating voltage of 8V and consumes up to 26mA of current. The device supports NTSC and PAL standards, utilizing baseband Y, R-Y, and B-Y signals. It features digital control for color selection and inversion functions. The component is housed in a DMP-20 surface-mount package and operates within a temperature range of -20°C to +75°C.

Video Processing Feature Summary

• Supports eight selectable character colors via digital control inputs
• Includes burst flag insertion function compatible with NTSC and PAL systems
• Provides independent Y (brightness) and C (color phase) inversion capabilities
• Designed for non-adjustment operation with minimal external components

Video Processing Applications

• Video camera signal processing
• Baseband video signal superimposition
• Character overlay generation for broadcast equipment

Video Processing Procurement Notes

Verify the specific ordering suffix against official documentation, as variations may exist. Confirm that the component meets required environmental specifications for the intended application. Ensure compatibility with existing baseband signal levels before integration into the design.

Video Processing Selection Notes

Select this component for applications requiring precise digital control over video character overlays without manual adjustment. It is suitable for designs needing integrated burst flag insertion and color phase inversion. Verify input signal amplitudes match the recommended baseband levels to ensure proper functionality.

Video Processing Part Context

This part belongs to the NJM2256 series of video ICs produced by Nisshinbo Micro Devices. It utilizes bipolar technology for signal processing. The device is designed to replace older models like the NJM2247, offering higher switching speeds and improved operational efficiency in video superimposition tasks.

Video Processing Replacement Considerations

The datasheet indicates the NJM2256 offers higher switching speed compared to the NJM2247. No other specific substitute part numbers are documented in the provided source material.