AD722JR-16-REEL

Overview

The AD722JR-16-REEL is an integrated RGB to NTSC/PAL encoder manufactured by Analog Devices Inc. It converts red, green, and blue color component signals into corresponding luminance and chrominance signals compliant with NTSC or PAL standards. The device provides composite video output and separate Y/C (S-Video) outputs, capable of simultaneously driving 75 Ω reverse-terminated cables. It operates from a single +5 V supply and accepts either an FSC clock, crystal, or 4FSC clock input. Logical inputs are CMOS compatible, and the chip features a power-down mode for energy efficiency.

Feature Summary

• Integrated solution converting RGB components to NTSC or PAL video standards without external filters or delay lines
• Provides simultaneous composite video and separate Y/C (S-Video) outputs
• Logic-selectable encoding modes for NTSC or PAL applications
• Capable of driving 75 Ω reverse-terminated loads directly

Applications

• RGB to NTSC or PAL video encoding systems
• Composite video signal generation for display interfaces
• S-Video output circuits requiring separate luminance and chrominance signals

Procurement Notes

Verify the specific suffix 'JR-16-REEL' against current manufacturer documentation to confirm package type and reel specifications. Check for obsolescence status as older video encoder models may have limited availability. Ensure compatibility with existing +5 V power supplies and CMOS logic levels in the target design.

Selection Notes

Select this component when a low-cost, single-supply RGB encoder is required for NTSC or PAL compliance. It is suitable for designs needing minimal external components, as it integrates DC restoration and does not require external delay lines. Verify that the 75 Ω output drive capability meets the cable requirements of the application.

Part Context

The AD722 series belongs to Analog Devices' line of video processing integrated circuits designed for standard-definition video encoding. This specific part number represents the reel-packaged version of the AD722 encoder, intended for automated assembly processes in consumer electronics and video equipment manufacturing.

Replacement Considerations

Review the similar parts list provided in public documentation, such as the AD7224 series, noting that these are DACs and not direct functional replacements. No direct pin-compatible substitutes are confirmed in the available data; verify alternative encoders based on specific video standard requirements.