MAX281BCPA+

Overview

The MAX281BCPA+ is a fifth-order zero-error Bessel active filter manufactured by Analog Devices Inc./Maxim Integrated. It utilizes switch-capacitor technology to provide low-pass filtering characteristics with a cutoff frequency of 20kHz. The device operates on a single supply voltage ranging from 4.75V to 5.25V, consuming a typical operating current of 1mA. It is housed in an 8-pin PDIP package and is rated for operation within a temperature range of 0°C to +70°C. The component features buried-zener-like architecture optimized for minimal noise and high precision.

Feature Summary

• Fifth-order Bessel response for linear phase characteristics
• Zero-error design eliminates external trimming requirements
• Switch-capacitor architecture enables precise frequency control

Applications

• Precision signal conditioning circuits
• Anti-aliasing filters in data acquisition systems
• Low-noise analog front-end processing

Procurement Notes

Verify the specific suffix 'BCPA+' against official Analog Devices documentation to confirm the exact temperature grade and packaging variant. Ensure compatibility with single-supply 5V systems. Check for RoHS compliance status as indicated in the manufacturer's latest environmental declarations before finalizing procurement orders.

Selection Notes

Select this component when a sharp roll-off with maximally flat group delay is required. The fixed 20kHz cutoff is suitable for audio or sensor signal bandwidths. Compare against other MAX281 variants if different package types or extended temperature ranges are needed for the specific application environment.

Part Context

This part belongs to the MAX281 series of active filters. It shares the core fifth-order Bessel topology with other variants like MAX281BEWE+, differing primarily in package style and temperature rating. The series is designed for applications requiring precise analog filtering without complex passive component networks.

Replacement Considerations

Direct substitutes include other MAX281 family members such as MAX281BEWE+ or MAX281BCWE+. Verify pinout compatibility and electrical specifications before substitution. Cross-reference with ADI's replacement guide for any discontinued variants.