MAX274BEWI+T

Overview

The MAX274BEWI+T is a fourth-order continuous-time active filter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It operates on a single 5V supply with a cutoff frequency of 150 kHz and supports low-pass or band-pass configurations via external components. The device utilizes a wide dynamic range architecture to minimize distortion and intermodulation products. Packaged in a 28-pin SOIC, it functions within a temperature range of -40°C to +85°C. Designed for high linearity, it eliminates the need for external tuning while maintaining stable performance across varying process and temperature conditions.

Feature Summary

• Continuous-time architecture provides inherent immunity to clock feedthrough and aliasing effects common in switched-capacitor designs.
• Wide dynamic range design ensures low harmonic distortion and minimal intermodulation products without requiring external tuning circuits.
• Configurable filter response allows selection between low-pass and band-pass modes using simple external passive components.

Applications

• Intermediate frequency (IF) filtering in communication receivers
• Channel selection in wireless transceivers
• Anti-aliasing filtering in data acquisition systems

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing from distributors. Confirm the 'B' grade meets the required operating temperature range of -40°C to +85°C. Cross-reference the manufacturer part number with official Analog Devices documentation to ensure authenticity and correct revision level before procurement.

Selection Notes

Select this component when a continuous-time solution is preferred over switched-capacitor filters to avoid clock-related noise. Ensure the application requires a fixed cutoff frequency near 150 kHz. Verify that the single-supply operation aligns with the system power budget and that the SOIC package fits the available PCB footprint constraints.

Part Context

This part belongs to the MAX274/MAX275 family of continuous-time active filters. It serves as a direct replacement for older discrete filter designs, offering integrated functionality in a compact surface-mount package. The series is designed for applications requiring high linearity and stable frequency response without complex external tuning adjustments.

Replacement Considerations

The MAX275AEPP offers similar filtering capabilities but may differ in pinout or package type. Verify electrical compatibility and physical dimensions before substitution. Consult the official datasheet for detailed parameter comparisons to ensure functional equivalence in the target circuit.