MAX7404ESA

Overview

The MAX7404ESA is an eighth-order, lowpass, elliptic active filter utilizing switched-capacitor technology. It operates on a single 3V supply with a voltage range of 2.7V to 3.6V. The device features a fixed cutoff frequency of 10kHz and includes an internal clock oscillator that requires only an external timing capacitor. Packaged in an 8-pin SOIC, it functions as a standalone signal processing component suitable for battery-powered applications.

Feature Summary

• Integrates eighth-order elliptic filtering response within a single compact package
• Utilizes switched-capacitor architecture with internal clock generation
• Designed for low-voltage single-supply operation

Applications

• Battery-powered portable instrumentation
• Signal conditioning for data acquisition systems
• Audio preprocessing circuits

Procurement Notes

Verify the specific suffix (e.g., +T) against the datasheet to confirm packaging type, as tape-and-reel variants differ from tube-packaged units. Confirm RoHS compliance status through official manufacturer documentation before procurement. Ensure the selected variant matches the required operational temperature range for the target environment.

Selection Notes

Select this component when a high-order elliptic response is required without discrete passive components. Verify that the system clock frequency can be accurately set via the external capacitor to maintain the 10kHz cutoff. Ensure the input signal amplitude remains within the linear operating range of the single-supply configuration.

Part Context

This part belongs to the Maxim Integrated MAX7404 series of switched-capacitor filters. These devices are designed to replace complex RC networks, offering precise frequency characteristics in a small footprint. The family typically includes variations with different cutoff frequencies and filter responses.

Replacement Considerations

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