MAX7408EUA+

Overview

The MAX7408EUA+ is a fifth-order, lowpass, elliptic switched-capacitor filter operating from a single +5V supply. It features a clock-tunable corner frequency ranging from 1Hz to 15kHz with a transition ratio of 1.6 and typical stopband rejection of 53dB. The device draws 1.2mA in operating mode and reduces to 0.2µA in shutdown mode. It includes an internal oscillator or external clock input, offset adjustment capability, and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Fifth-order elliptic lowpass filtering architecture
• Clock-tunable corner frequency from 1Hz to 15kHz
• Low-power shutdown mode reducing current to 0.2µA
• Internal oscillator or external clocking options

Applications

• ADC anti-aliasing
• Post-DAC filtering
• Speech processing

Procurement Notes

Verify the specific ordering suffix 'EUA+' against official manufacturer documentation to confirm the extended temperature range (-40°C to +85°C) and 8-pin µMAX package configuration. Ensure compatibility with single +5V supply requirements and check for any recent product change notices regarding component availability or specifications.

Selection Notes

Select this component when a sharp rolloff with high stopband rejection is required for single-supply applications. The fixed transition ratio of 1.6 distinguishes it from the r=1.25 variants. Consider the internal oscillator convenience versus external clock precision needs. Verify that the 1.2mA operating current fits the system power budget.

Part Context

This part belongs to the MAX7408/MAX7411/MAX7412/MAX7415 family of fifth-order elliptic switched-capacitor filters. The MAX7408 variant specifically supports a +5V supply and offers a transition ratio of 1.6. Other family members include the MAX7411 (+5V, r=1.25), MAX7412 (+3V, r=1.6), and MAX7415 (+3V, r=1.25).

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.