MAX296CPA+

Overview

The MAX296CPA+ is an 8th-order, lowpass, switched-capacitor Bessel filter manufactured by Analog Devices Inc./Maxim Integrated. It provides a maximally flat passband response with low overshoot and fast settling characteristics. The device operates from single +5V or dual ±5V supplies and features a clock-to-corner frequency ratio of 50:1. The corner frequency range extends from 0.1Hz to 50kHz, controlled by an internal oscillator or external clock signal. It includes an uncommitted operational amplifier for post-filtering or anti-aliasing applications.

Feature Summary

• 8th-order lowpass Bessel filter topology providing low overshoot and fast settling times
• Clock-tunable corner frequency range from 0.1Hz to 50kHz with a 50:1 clock ratio
• Integrated uncommitted operational amplifier for continuous-time filtering stages
• Supports both internal oscillator generation via external capacitor and direct external clock input

Applications

• ADC Anti-Aliasing Filter
• DAC Post-Filtering
• Noise Analysis
• 50Hz/60Hz Line-Noise Filtering

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Ensure compatibility with existing PCB footprints for the 8-pin DIP configuration. Confirm RoHS compliance status through current datasheet revisions before finalizing procurement plans.

Selection Notes

Select this component when a Bessel response with minimal phase distortion is required for signal integrity. Verify that the application supports the necessary clock frequency requirements relative to the desired corner frequency. Consider the available supply voltage options and ensure the uncommitted op amp meets the load driving needs if utilized in the design.

Part Context

This part belongs to the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. While the MAX291 and MAX295 utilize Butterworth responses, the MAX296 specifically implements a Bessel response optimized for preserving step input shapes. The CPA+ designation indicates an 8-pin plastic DIP package within the commercial temperature range.

Replacement Considerations

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