MAX7400ESA

Overview

The MAX7400ESA is an eighth-order, lowpass elliptic active filter utilizing switched-capacitor technology. It operates on a single 5 V supply with a specified range of 4.5 V to 5.5 V. The device features a fixed cutoff frequency of 10 kHz and is housed in an 8-lead SOIC surface-mount package. It supports industrial temperature operation from -40°C to +85°C. This component provides high selectivity for signal conditioning applications requiring steep roll-off characteristics without external passive components.

Feature Summary

• Implements eighth-order elliptic filtering response for sharp attenuation
• Utilizes switched-capacitor architecture eliminating external capacitors
• Operates on a single 5 V power supply rail
• Provides fixed 10 kHz lowpass cutoff frequency

Applications

• Anti-aliasing filters in data acquisition systems
• Signal conditioning for analog-to-digital converters
• Noise reduction in sensor interface circuits

Procurement Notes

Verify the specific suffix designation when ordering, as package type and temperature range vary across the MAX7400 family. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the selected variant matches the required operating temperature range and mounting style for the target application.

Selection Notes

Select this component when a fixed 10 kHz elliptic response is required. Compare against other MAX7400 variants based on package constraints (SOIC vs. DIP) and thermal requirements (industrial vs. commercial grades). Ensure the system clock frequency aligns with the internal switched-capacitor requirements for accurate cutoff frequency performance.

Part Context

The MAX7400ESA belongs to the MAX7400 series of switched-capacitor filters manufactured by Analog Devices / Maxim Integrated. It shares core filtering specifications with other variants like the MAX7400CPA+ and MAX7400CSA+, differing primarily in package form factor and operational temperature limits. The ESA suffix specifically denotes the industrial-grade SOIC-8 version.

Replacement Considerations

Direct pin-compatible replacements within the same family include MAX7400CSA+ for commercial grade SOIC applications. Cross-family substitution requires verification of cutoff frequency tolerance and clock input compatibility.