MAX264ACWI+

Overview

The MAX264ACWI+ is a pin-programmable universal switched-capacitor active filter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It features two independent second-order filter sections housed in a 28-pin Wide SOIC package. The device supports lowpass, highpass, bandpass, notch, and allpass configurations with a maximum center frequency of 140kHz. It operates on dual supplies ranging from ±2.37V to ±6.3V and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Pin-programmable control allows independent adjustment of center frequency and Q factor without external components.
• Dual second-order filter sections enable complex filtering topologies using internal switches and capacitors.
• Versatile configuration options include lowpass, highpass, bandpass, notch, and allpass modes selectable via mode pins.

Applications

• Signal processing systems requiring precise frequency selection
• Communication equipment for channel selection and interference rejection
• Instrumentation for signal conditioning and noise filtering

Procurement Notes

Verify the specific suffix ACWI+ against the official datasheet to confirm the commercial temperature grade (-40°C to +85°C) and the 28-pin Wide SOIC package dimensions. Ensure supply chain sources provide traceability to Analog Devices or Maxim Integrated to guarantee component authenticity and compliance with RoHS standards.

Selection Notes

Select this component when designing circuits requiring flexible filter topology changes without altering hardware. The 140kHz maximum center frequency suits applications where higher-speed data conversion is not required. Verify that the available clock frequencies align with the desired f0 programming ratios defined in the technical specifications.

Part Context

This part belongs to the MAX263/MAX264/MAX267/MAX268 family of universal switched-capacitor filters. While sharing the same core architecture and pinout, the MAX264 variant specifically extends the operational bandwidth compared to lower-frequency siblings like the MAX263, offering greater flexibility for mid-range audio and telemetry applications.

Replacement Considerations

The MAX264BCWI+ serves as a direct functional substitute with identical electrical characteristics but differs only in the guaranteed operating temperature range specification.