MAX292EWE+T

Overview

The MAX292EWE+T is an 8th-order lowpass switched-capacitor filter with a Bessel response, designed for applications requiring low overshoot and fast settling. It operates within a corner frequency range of 0.1Hz to 25kHz, controlled by a clock-to-corner-frequency ratio of 100:1. The device supports single +5V or dual ±5V supplies, drawing approximately 7mA supply current. It features an internal oscillator or external clock input, an uncommitted operational amplifier, and is housed in a 16-pin Wide SO package.

Feature Summary

• Bessel filter response providing linear phase shift and minimal step response overshoot
• Clock-tunable corner frequency adjustable from 0.1Hz to 25kHz via internal or external clock
• Integrated uncommitted operational amplifier for additional filtering stages

Applications

• Anti-aliasing filters preceding analog-to-digital converters
• Post-filtering for digital-to-analog converter outputs
• Noise analysis systems requiring precise signal conditioning

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range of -40°C to +85°C. Confirm the 'W' designation corresponds to the 16-pin Wide SOIC package. Ensure the '+' suffix confirms RoHS compliance status as per manufacturer specifications before finalizing procurement orders.

Selection Notes

Select this component when a maximally flat passband is not required, but rather a linear phase response is critical for preserving signal shape. The MAX292 is distinct from the MAX291 due to its Bessel characteristic. Ensure the design accommodates the 100:1 clock-to-corner-frequency ratio for the desired bandwidth.

Part Context

This part belongs to the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. While the MAX291 offers a Butterworth response, the MAX292 provides a Bessel response. The MAX295 and MAX296 variants extend the maximum corner frequency capability to 50kHz compared to the 25kHz limit of the MAX292.

Replacement Considerations

The MAX291CWE+T serves as a functional substitute if a Butterworth response is acceptable instead of Bessel. For higher frequency requirements up to 50kHz, the MAX296 series may be considered.