MAX7419EUA+T

Overview

The MAX7419EUA+T is a 5th-order, low-pass switched-capacitor filter (SCF) with a Bessel response. It operates from a single +5V supply and draws 3mA in normal mode, reducing to 0.2μA in shutdown. The corner frequency ranges from 1Hz to 30kHz via a 100:1 clock-to-corner ratio. Key electrical parameters include an output offset voltage of ±4mV typical, power-supply rejection ratio of 70dB, and input leakage current of ±10μA. It features a 8-pin μMAX package and operates between -40°C and +85°C.

Feature Summary

• Bessel filter response for low overshoot and fast settling times
• Clock-tunable corner frequency adjustable from 1Hz to 30kHz
• Low-power shutdown mode reduces supply current to 0.2μA
• Single +5V supply operation with low output offset

Applications

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

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against the official datasheet specifications. Ensure the ordering suffix matches the required temperature range and packaging format. Confirm RoHS compliance status through the manufacturer's documentation before finalizing procurement orders.

Selection Notes

Select this part when a Bessel response is required for minimal phase distortion and fast settling. Verify that the system can provide a stable clock signal within the 100:1 ratio constraint. Ensure the operating environment stays within the specified -40°C to +85°C range for the 'E' suffix variant.

Part Context

This component belongs to the MAX7418–MAX7425 family of 5th-order low-pass switched-capacitor filters. The MAX7419 specifically provides a Bessel response, distinguishing it from elliptic or Butterworth variants in the same series. All members share similar pinouts and operational principles but differ in frequency response characteristics.

Replacement Considerations

Direct replacements within the same family include MAX7419CUA+ for commercial temperature range applications. Other variants like MAX7418 or MAX7420 offer different filter responses and should only be considered if the specific Bessel characteristic is not strictly required.