AD725AR-REEL

Overview

The AD725AR-REEL is a low-cost RGB to NTSC/PAL encoder manufactured by Analog Devices Inc. It converts red, green, and blue color component signals into luminance and chrominance outputs compliant with NTSC or PAL standards. The device operates on a single +5 V supply with a quiescent current of 30 mA in encode mode and less than 1 µA in power-down mode. It features TTL-compatible logic inputs and provides composite, S-video (luminance/chrominance), and luma trap outputs. Packaged in a 16-lead SOIC, it supports an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Converts RGB component video signals into NTSC or PAL composite and S-video formats
• Includes a dedicated Luma Trap port for reducing cross-color artifacts
• Outputs drive 75 Ω reverse-terminated loads at twice standard signal levels
• Supports power-down mode with ultra-low current consumption

Applications

• RGB/VGA to NTSC/PAL encoding for personal computers
• Video game consoles
• Video conference cameras
• Digital still cameras

Procurement Notes

Verify the specific reel packaging suffix against the manufacturer's ordering guide to ensure compatibility with automated assembly equipment. Confirm that the component meets RoHS compliance requirements for the intended market. Check for any end-of-life notifications or discontinuation notices from Analog Devices prior to finalizing procurement plans.

Selection Notes

Select this component when a cost-effective solution for converting analog RGB signals to standard definition television formats is required. Ensure the system design can provide the necessary 4FSC clock frequency (14.318 MHz for NTSC or 17.734 MHz for PAL). Verify that the input video signals are properly terminated and AC coupled to match the specified input amplitude ranges.

Part Context

The AD725AR-REEL belongs to the AD725 family of video encoders from Analog Devices. This series is designed for general-purpose applications requiring conversion of RGB signals to broadcast-standard video. The AR suffix indicates the industrial temperature range and SOIC package, while the REEL suffix denotes the tape-and-reel packaging format suitable for high-volume surface mount assembly.

Replacement Considerations

The AD724 is a similar encoder but accepts a 1FSC input instead of 4FSC. For direct pin-compatible replacements within the same family, verify availability of the tube-packaged AD725AR variant if reel sourcing is not feasible.