MAX7445EUD

Overview

The MAX7445EUD+T is a fourth-order active low-pass filter IC designed for video and communication signal processing. It features four integrated filters with a cutoff frequency of 27MHz, offering improved passband flatness and group delay characteristics compared to passive alternatives. The device operates on a single 5V supply voltage and is housed in a 14-TSSOP package with an exposed pad for enhanced thermal performance. It supports surface mount installation and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates four precision low-pass filters with a fixed 27MHz cutoff frequency
• Provides superior passband flatness and controlled group delay for signal integrity
• Operates efficiently on a single 5V power supply
• Utilizes a 14-TSSOP package with an exposed thermal pad

Applications

• Video signal processing circuits
• Communication system front-ends
• Noise reduction in analog signal paths
• Precision filtering in data acquisition systems

Procurement Notes

Verify the specific suffix (e.g., +T for tape and reel) against your manufacturing requirements. Confirm that the 14-TSSOP-EP footprint matches your PCB layout, particularly regarding the exposed pad connection for thermal dissipation. Ensure the single 5V supply capability aligns with your system's power architecture before finalizing the component selection.

Selection Notes

Select this component when a compact, fourth-order low-pass response is required at 27MHz without external passive components. It is suitable for designs prioritizing space efficiency and consistent filter performance over tunable parameters. Consider the exposed pad requirement for thermal management if operating near maximum temperature limits.

Part Context

This part belongs to Maxim Integrated's family of active filters, which are engineered to replace bulky passive LC networks. These ICs integrate resistors and capacitors on-chip to achieve precise frequency responses. The MAX7445 specifically targets applications needing high-order filtering in small form factors, bridging the gap between simple RC filters and complex programmable DSP solutions.

Replacement Considerations

Check for direct pin-compatible alternatives from Analog Devices or other manufacturers offering similar 27MHz cutoff frequencies in TSSOP packages. Verify that any substitute maintains the same fourth-order topology and single-supply operation to ensure circuit compatibility.