MAX274BEWI+

Overview

The MAX274BEWI+ is a fourth-order continuous-time active filter manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single 5V supply and features an external clock input ranging from 50kHz to 1MHz, which sets the filter cutoff frequency at one-hundredth of the clock rate. The device utilizes a low-pass Bessel response with a maximum cutoff frequency of 10kHz. It is housed in a 28-pin Wide SOIC package and supports operation within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates four second-order sections into a single monolithic chip for compact design
• Provides a low-pass Bessel response characteristic for linear phase performance
• Enables precise tuning via an external clock signal without requiring external resistors or capacitors

Applications

• Anti-aliasing filters in data acquisition systems
• Signal conditioning stages for analog-to-digital converters
• Audio processing circuits requiring specific phase linearity

Procurement Notes

Verify the component authenticity through official Analog Devices channels or authorized distributors. Confirm that the ordering suffix matches the required industrial temperature grade and package variant. Ensure the procurement source provides valid traceability documentation to guarantee compliance with specified electrical standards.

Selection Notes

Select this component when a fourth-order Bessel response is required without discrete passive components. Verify that the system clock frequency allows for the desired cutoff bandwidth. Consider the MAX275 if a bandpass response is needed instead of the low-pass configuration provided by this part.

Part Context

This part belongs to the MAX274/MAX275 family of continuous-time active filters. These devices are designed to replace complex discrete RC networks. The MAX274 specifically offers a low-pass response, while the companion MAX275 provides a bandpass response within the same pin-compatible package.

Replacement Considerations

MAX275BCWI+