MAX7444ESA+T

Overview

The MAX7444ESA+T is a triple-channel video reconstruction filter and buffer designed for S-video and CVBS signals. It operates from a single +5V supply and features an adjustable-gain output buffer capable of driving two standard 150Ω video loads. The device includes high-frequency boost to improve picture sharpness, with a typical stopband attenuation of 41dB at 27MHz and a passband response of -0.3dB. It supports NTSC, PAL, and SDTV systems, offering differential gain and phase errors of 0.4% and 0.4 degrees respectively. The unit is housed in an 8-pin SO package with an exposed pad.

Feature Summary

• Triple-channel lowpass filter and adjustable-gain output buffer for composite and Y/C outputs
• High-frequency boost capability to compensate for signal degradation and enhance image sharpness
• Low blanking level voltage enabling DC-coupled output configurations
• Optimized Butterworth-type filter response for NTSC, PAL, and interlaced SDTV signals

Applications

• Set-top boxes and hard-disk recorders (HDRs)
• DVD players and digital VCRs
• Security cameras and digital cameras
• Game consoles and personal video recorders

Procurement Notes

Verify the specific suffix '+T' against official manufacturer documentation to confirm tape-and-reel packaging status, as datasheets may list bulk tube options like 'MAX7444ESA'. Confirm RoHS compliance and lead-free specifications directly with Analog Devices or authorized distributors before procurement.

Selection Notes

Select the MAX7444 over the MAX7443 when high-frequency boost is required to sharpen video images. Ensure the design accommodates the single +5V supply requirement and utilizes the GSET pin to configure the desired output gain levels of 6dB, 9.5dB, or 12dB according to system load requirements.

Part Context

This component belongs to the MAX7443/MAX7444 family of video reconstruction filters. While the MAX7443 provides a maximally flat frequency response, the MAX7444 variant specifically incorporates high-frequency boost circuitry. Both devices share identical pinouts and electrical characteristics except for the frequency response profile.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.