MAX295CPA

Overview

The MAX295CPA is an active, eighth-order, low-pass switched-capacitor filter manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single 5V supply and features a cutoff frequency of 50 kHz. The device utilizes a clock-to-cutoff frequency ratio of 50:1 for accurate filtering characteristics. It is housed in an 8-pin DIP package and supports operation within a temperature range of -40°C to +85°C. This component integrates complex filter functions into a compact surface-mount or through-hole compatible form factor.

Feature Summary

• Eighth-order low-pass response provides steep attenuation beyond the cutoff frequency
• Switched-capacitor architecture eliminates external resistors and capacitors
• Single-supply 5V operation simplifies power requirements
• Clock-driven design ensures precise frequency control relative to input clock

Applications

• Anti-aliasing filters in data acquisition systems
• Signal conditioning for analog-to-digital converter inputs
• Low-frequency noise removal in sensor interfaces

Procurement Notes

Verify the specific suffix 'CPA' against official Analog Devices documentation to confirm pinout and package type accuracy. Ensure the required clock signal meets the 50:1 ratio specification for the desired 50 kHz cutoff. Confirm RoHS compliance status if environmental regulations apply to the target assembly process.

Selection Notes

Select this component when a high-order elliptic filter response is needed without external passive components. Verify that the system can provide a stable clock signal, as performance depends entirely on the clock frequency. Compare against other MAX29x variants if different filter orders or responses are required.

Part Context

The MAX295 belongs to the Maxim Integrated MAX29x family of switched-capacitor filters. These devices were designed to replace bulky discrete RC networks with integrated solutions. The MAX295 specifically offers an eighth-order elliptic response, providing superior stopband rejection compared to lower-order alternatives in the same series.