MAX260BEWG+

Overview

The MAX260BEWG+ is a microprocessor-programmable universal active filter from Analog Devices/Maxim Integrated, housed in a 24-pin Wide SOIC package. It contains two second-order switched-capacitor sections with independent center frequency (f0) and Q control via a digital interface. The device operates on single +5V or dual ±5V supplies. It supports bandpass, lowpass, highpass, notch, and allpass configurations without external components. The f0 range extends to 7.5kHz, utilizing a 6-bit program input for frequency selection and 128-step Q control.

Feature Summary

• Microprocessor interface enables precise digital tuning of filter parameters
• Dual second-order sections allow complex filter polynomial realization
• Auto-zero circuitry provides superior DC offset and drift characteristics
• Internal oscillator supports crystal, RC network, or external clock inputs

Applications

• Microprocessor-tuned filters
• Anti-aliasing filters
• Digital signal processing
• Adaptive filters
• Phase-locked loops

Procurement Notes

Verify the specific suffix BEWG against current manufacturer documentation to confirm package type and temperature range. Confirm availability status as this component series may be discontinued or subject to supply restrictions. Ensure compatibility with existing PCB footprints and programming logic levels before procurement.

Selection Notes

Select the MAX260 variant when low-frequency precision and minimal DC offset are critical requirements. Choose between BEWG for surface mount applications or NG variants for through-hole mounting. Verify that the required center frequency falls within the 7.5kHz limit, as higher frequencies require the MAX261 or MAX262 models.

Part Context

This component belongs to the MAX260/MAX261/MAX262 family of CMOS dual second-order universal switched-capacitor active filters. The MAX260 specifically targets applications requiring the lowest center frequencies and highest DC accuracy among the three devices due to its unique auto-zero architecture.

Replacement Considerations

Direct functional substitutes include the MAX261AEWG+ and MAX263BCWI+. Note that these alternatives offer different center frequency ranges and lack the MAX260's specific auto-zero DC performance characteristics.