MAX268BENG+

Overview

The MAX268BENG+ is a pin-programmable universal active filter manufactured by Analog Devices Inc./Maxim Integrated. It features two second-order filter sections housed in a 24-pin PDIP package. The device operates on a supply voltage ranging from 4.74V to 12.6V, or ±2.37V to ±6.3V. It supports a center frequency of 140kHz and functions as a bandpass filter. The component is designed for surface mount or through-hole installation depending on the specific variant, with the BENG+ specifically utilizing the PDIP format.

Feature Summary

• Pin-programmable architecture allows configuration of filter parameters without external components
• Dual second-order sections enable versatile signal processing configurations
• Universal functionality supports multiple filter types including bandpass, lowpass, highpass, notch, and allpass

Applications

• Signal conditioning in communication systems
• Audio processing circuits requiring precise frequency selection
• Instrumentation systems needing programmable filtering

Procurement Notes

Verify the exact ordering suffix against the manufacturer's current datasheet to confirm package type and temperature range. Confirm availability status as legacy products may have limited stock or end-of-life notifications. Ensure the supplier provides valid traceability documentation for quality assurance purposes.

Selection Notes

Select this component when dual independent filter sections are required within a single package. Verify that the 140kHz center frequency aligns with system requirements. Check compatibility with available clock sources, as switched-capacitor filters rely on external clock signals for operation.

Part Context

This part belongs to the MAX263/MAX264/MAX267/MAX268 family of pin-programmable universal active filters. These devices share similar architectural features but differ in performance specifications such as maximum center frequency and noise characteristics. The MAX268 variant typically offers higher frequency capabilities compared to earlier models in the series.

Replacement Considerations

Direct replacements include other members of the MAX26x family such as MAX263, MAX264, or MAX267, provided their electrical specifications meet the design requirements. Verify pin compatibility and ensure the substitute device supports the necessary center frequency range.