MAX7400ESA+

Overview

The MAX7400ESA+ is an 8th-order, lowpass, elliptic switched-capacitor filter operating from a single +5V supply. It features a corner frequency range of 1Hz to 10kHz with a 100:1 clock-to-corner ratio. The device provides -82dB stopband rejection and a transition ratio of 1.5. Supply current is 2mA in normal mode and 0.2µA in shutdown. It operates within a temperature range of -40°C to +85°C and is housed in an 8-pin SO package.

Feature Summary

• 8th-order lowpass elliptic response
• Low noise and distortion performance
• Clock-tunable corner frequency
• Single-supply operation

Applications

• ADC anti-aliasing
• Speech processing
• Post-DAC filtering
• Air-bag electronics
• CT2 base stations

Procurement Notes

Verify the component against official Analog Devices documentation to confirm authenticity and specifications. Ensure the ordering suffix matches the required temperature range and package type for your specific application needs before finalizing procurement.

Selection Notes

Select this part for applications requiring sharp rolloff and high stopband rejection. Consider the MAX7403 if a steeper transition ratio is needed. Ensure the system clock or external capacitor accurately sets the desired corner frequency within the specified range.

Part Context

This component belongs to the MAX7400 family of switched-capacitor filters. It shares functional similarities with the MAX7403, MAX7404, and MAX7407, differing primarily in operating voltage and filter response characteristics. All variants utilize the same 8-pin packaging options.

Replacement Considerations

The MAX7403 offers a sharper rolloff with a transition ratio of 1.2 but maintains the same +5V supply requirement. Verify pin compatibility and electrical characteristics when substituting.