MAX7443ESA+

Overview

The MAX7443ESA+ 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 8-pin SO package with an exposed pad. The device includes lowpass filters and adjustable-gain output buffers capable of driving two standard 150Ω video loads per channel. Key electrical parameters include a typical stopband attenuation of 41dB at 27MHz, a passband response of -0.3dB (typ), and a supply current of 88mA to 110mA. The gain is selectable via the GSET pin at 6dB, 9.5dB, or 12dB. It functions over an extended temperature range of -40°C to +85°C.

Feature Summary

• Triple-channel architecture supporting Y/C (S-Video) and composite video outputs
• Adjustable-gain output buffers configurable for 6dB, 9.5dB, or 12dB
• Optimized Butterworth-type filter response for NTSC, PAL, and SDTV standards

Applications

• Set-top boxes
• Hard-disk recorders (HDRs)
• DVD players
• Digital VCRs

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required package type and check for RoHS compliance documentation. Ensure the ordering information aligns with current datasheet revisions to avoid discrepancies in pinout or electrical characteristics.

Selection Notes

Select the MAX7443ESA+ when a flat frequency response is required for standard-definition video applications. Choose this part over the MAX7444 variant if high-frequency boost is not needed. Verify that the system design accommodates the single +5V supply requirement and the thermal dissipation needs associated with the SO package configuration.

Part Context

This component belongs to the MAX7443/MAX7444 family of video reconstruction filters manufactured by Analog Devices / Maxim Integrated. It serves as a signal conditioning stage following digital-to-analog conversion in consumer electronics. The device integrates filtering and buffering functions to clean up analog video signals before transmission to display outputs.

Replacement Considerations

The MAX7444ESA+ is a functional substitute within the same series, differing primarily by the inclusion of high-frequency boost capabilities.