MAX7443ESA

Overview

The MAX7443ESA is a dual-channel, second-order low-pass filter IC designed for video signal processing. It operates on a single 5V supply (4.75V to 5.25V) and features a cutoff frequency of 27MHz. The device integrates two filters with buffer outputs in an 8-pin SOIC-EP package. Key electrical specifications include a maximum passband ripple of 0.1dB and a stopband attenuation of 41dB at the cutoff frequency. It supports NTSC, PAL, and interlaced SDTV signals, providing triple-channel functionality when combined with external components.

Feature Summary

• Integrated dual-channel second-order low-pass filtering with built-in buffers
• Optimized frequency response for standard definition video formats including NTSC and PAL
• Single-supply operation compatible with standard 5V logic systems

Applications

• CVBS and Y/C (S-Video) signal conditioning
• NTSC and PAL video decoder front-ends
• Interlaced SDTV signal processing chains

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to availability constraints. Confirm RoHS compliance status and specific packaging variants prior to order placement. Ensure supply chain documentation matches the exact part number suffix to guarantee performance parameters align with design requirements.

Selection Notes

Select this component for applications requiring precise video bandwidth limiting without external passive components. Consider the 8-SOIC-EP package for thermal management and board space efficiency. Evaluate power supply stability within the 4.75V to 5.25V range to maintain optimal filter characteristics and signal integrity during operation.

Part Context

Part of the Maxim Integrated video interface family, the MAX7443ESA addresses common-mode noise and aliasing in analog video paths. It simplifies circuit design by combining filtering and buffering functions into a single monolithic solution, reducing component count and assembly complexity compared to discrete RC filter implementations.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing PCB footprints and electrical specifications if considering alternative vendors or updated series from Analog Devices.