MAX292CWE+

Overview

The MAX292CWE+ 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 temperature range of 0°C to +70°C and utilizes a 16-pin Wide SO package. The device supports a single supply voltage from 4.75V to 11V or dual supplies from ±2.375V to ±5.5V. Its corner frequency is tunable between 0.1Hz and 25kHz via a clock-to-corner-frequency ratio of 100:1. An internal oscillator requires only an external capacitor, while an uncommitted operational amplifier is included for additional signal conditioning.

Feature Summary

• Bessel filter response providing linear phase shift and minimal step input overshoot
• Clock-tunable corner frequency adjustable from 0.1Hz to 25kHz
• Integrated uncommitted operational amplifier for anti-aliasing or post-filtering
• Flexible clocking options supporting both internal oscillator generation and external signals

Applications

• Anti-aliasing filters for multiplexed analog-to-digital converter (ADC) inputs
• Post-filtering stages for digital-to-analog converter (DAC) outputs
• Line-noise filtering at 50Hz or 60Hz frequencies
• Precision noise analysis instrumentation

Procurement Notes

Verify the component status as End-of-Life (EOL) before finalizing designs. Confirm that the specific ordering suffix corresponds to the required 16-pin Wide SO package and commercial temperature grade. Ensure compatibility with existing board layouts due to potential obsolescence of this part number.

Selection Notes

Select the MAX292CWE+ when preserving waveform shape during transient responses is critical, distinguishing it from Butterworth alternatives. Verify that the required clock frequency remains within the 2.5MHz maximum limit. Ensure the design accommodates the necessary external timing capacitor for the internal oscillator if an external clock source is not utilized.

Part Context

This component belongs to the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. While the MAX291 and MAX295 provide Butterworth responses, the MAX292 variant specifically delivers Bessel characteristics. All members share identical pinouts and power requirements, differing primarily in their frequency response profiles.

Replacement Considerations

Publicly confirmed substitutes include the MAX291CWE+, MAX295CWE+, and MAX296CWE+. These parts share the same physical footprint and electrical interface but offer different filter responses such as Butterworth or varying corner frequency ranges.