MAX262AENG

Overview

The MAX262AENG 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 Plastic DIP package with an extended temperature range of -40°C to +85°C. The device supports center frequencies up to 140 kHz and operates on single +5V or dual ±5V supplies. Key electrical parameters include a typical power supply current of 16 mA at ±5V, a maximum clock frequency of 4 MHz, and a guaranteed clock-to-center-frequency ratio accuracy of ±1% for the A grade.

Feature Summary

• Microprocessor interface allows independent programming of center frequency and Q factor via digital inputs.
• Universal configuration capability supports bandpass, lowpass, highpass, notch, and allpass filter functions without external components.
• Integrated oscillator circuitry enables operation with crystals, RC networks, or external clock generators.

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels due to discontinued status. Confirm RoHS compliance requirements as the standard plastic DIP version may not meet current environmental regulations. Validate pin compatibility and thermal characteristics against the specific PCB layout before integration into new designs.

Selection Notes

Select the MAX262AENG when center frequencies exceeding 57 kHz are required, distinguishing it from the MAX260 and MAX261 variants. Ensure the design accommodates the extended temperature range (-40°C to +85°C) if operating outside commercial limits. Verify that the system can provide the necessary clock signals and digital control lines for the microprocessor interface.

Part Context

This component belongs to the MAX260/MAX261/MAX262 family of CMOS dual second-order universal switched-capacitor active filters. The 'A' suffix denotes the accuracy grade with tighter specifications, while 'ENG' indicates the 24-pin Plastic DIP package and extended industrial temperature range. These devices were designed to simplify active filter design by eliminating external passive components.

Replacement Considerations

Public confirmed substitute part numbers: MAX262ACNG (Commercial Temperature Range), MAX262AEWG+ (Wide SOIC Package, RoHS Compliant). Verify package dimensions and lead configurations when substituting between DIP and SOIC formats.