MAX7411EUA+T

Overview

The MAX7411EUA+T is a fifth-order, lowpass, elliptic switched-capacitor filter operating from a single +5V supply. It features a clock-to-corner frequency ratio of 100:1, allowing corner frequencies from 0.001kHz to 15kHz. The device provides a sharp rolloff with a transition ratio of 1.25 and typical stopband rejection of 37dB. Supply current is 1.2mA in operating mode and reduces to 0.2µA in shutdown mode. Total harmonic distortion plus noise is typically -80dB. The component is housed in an 8-pin µMAX package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Fifth-order elliptic lowpass filter topology providing steep rolloff characteristics
• Clock-tunable corner frequency ranging from 1Hz to 15kHz via internal or external clocking
• Low-power operation with 1.2mA active current and 0.2µA shutdown current
• Integrated offset-adjust pin for DC output level control

Applications

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

Procurement Notes

Verify the specific suffix 'E' indicates the extended industrial temperature range (-40°C to +85°C) compared to commercial variants. Confirm the '+T' designation corresponds to tape-and-reel packaging as specified in the ordering information. Ensure the source documentation explicitly supports the +5V single-supply requirement for this exact part number before procurement.

Selection Notes

Select the MAX7411 over the MAX7408 when a sharper rolloff is required, noting the trade-off between the 1.25 transition ratio and lower stopband rejection. Verify that the system can provide a stable clock signal, as the corner frequency is directly dependent on the clock input. Ensure the application requires a +5V supply, distinguishing it from the +3V MAX7412/MAX7415 family members.

Part Context

The MAX7411 belongs to the MAX7408/MAX7411/MAX7412/MAX7415 family of switched-capacitor filters. It shares the same physical footprint and pinout with the MAX7408 but differs in its elliptic response parameters. This family utilizes a passive ladder emulation approach to minimize component sensitivity compared to traditional biquadratic designs.

Replacement Considerations

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