MAX262AEWG+

Overview

The MAX262AEWG+ is a microprocessor-programmable universal active filter from the MAX260/MAX261/MAX262 series, manufactured by Analog Devices Inc./Maxim Integrated. It features two second-order switched-capacitor sections housed in a 24-pin SO-Wide package. The device supports center frequencies up to 140kHz with ±5V supply operation. Key electrical parameters include a typical power supply current of 20mA at ±5V and a guaranteed clock-to-f0 ratio accuracy of 1% for the A grade. It operates within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Microprocessor interface allows independent programming of center frequency and Q factor via digital inputs.
• Supports multiple filter configurations including bandpass, lowpass, highpass, notch, and allpass without external components.
• Features separate clock inputs for each filter section compatible with crystals, RC networks, or external generators.

Applications

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

Procurement Notes

Verify the specific suffix EWG+ confirms the Wide SOIC package and lead-free status against the manufacturer's current ordering guide. Confirm the A-grade designation ensures the specified 1% clock-to-f0 ratio accuracy required for precision applications. Check for obsolescence notices as this component family may have limited availability.

Selection Notes

Select the MAX262 variant over MAX260 or MAX261 when center frequencies exceeding 57kHz are required, as it utilizes lower clock-to-f0 ratios to reach 140kHz. Ensure the application requires microprocessor control rather than pin-programmable alternatives like the MAX263. Verify that the ±5V supply voltage aligns with the system power architecture.

Part Context

This component belongs to the MAX260/MAX261/MAX262 family of CMOS dual second-order universal switched-capacitor active filters. The MAX262 specifically extends the operational frequency range compared to its siblings. The AEWG+ designation indicates an extended temperature capability (though datasheet lists commercial for this specific suffix combination, typically E denotes -40 to +85C, while W is Wide SOIC; verify exact temp range in latest datasheet) and surface mount packaging.

Replacement Considerations

Direct functional substitutes within the same family include MAX262ACNG for DIP packages or MAX262AENG for extended temperature ranges. For higher frequency requirements, consider the MAX263 or MAX264 series which offer different f0 ranges and pin-programmable interfaces.