MAX295ESA+T

Overview

The MAX295ESA+T is an 8th-order, lowpass, switched-capacitor filter in the MAX291 series. It provides a Butterworth response with a corner frequency range of 0.1Hz to 50kHz. The device operates on a single +5V supply (4.75V to 11V) or dual ±5V supplies. It features a clock-to-corner-frequency ratio of 50:1 and includes an uncommitted operational amplifier for post-filtering or anti-aliasing tasks. The component is housed in an 8-pin SO package and supports operation from -40°C to +85°C.

Feature Summary

• Provides maximally flat passband response characteristic of Butterworth filters
• Enables dynamic adjustment of corner frequency via internal or external clock signals
• Integrates an uncommitted operational amplifier for additional signal conditioning

Applications

• ADC Anti-Aliasing Filter
• DAC Post-Filtering
• Noise Analysis
• 50Hz/60Hz Line-Noise Filtering

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature range. Confirm RoHS compliance status through the datasheet as indicated by the plus sign. Ensure the design accommodates the required clock frequency and power supply specifications before procurement.

Selection Notes

Select this component when a fixed 8th-order Butterworth lowpass response is required. Verify that the application requires a maximum corner frequency of 50kHz. Ensure the system can provide a stable clock signal within the recommended limits. Consider the integrated op amp if additional filtering stages are needed without extra components.

Part Context

The MAX295ESA+T belongs to the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. While the MAX291 and MAX292 offer a 25kHz maximum corner frequency, the MAX295 and MAX296 extend this limit to 50kHz. This specific part implements the Butterworth response profile.

Replacement Considerations

MAX295ESA

FAQ

What is the clock-to-corner-frequency ratio for the MAX295?

The MAX295 operates with a clock-to-corner-frequency ratio of 50:1.

Can the MAX295 operate with a single power supply?

Yes, it can operate with a single +5V supply ranging from 4.75V to 11V, or dual supplies of ±2.375V to ±5.500V.

What is the function of the uncommitted op amp?

The uncommitted op amp can be used to build a continuous-time lowpass filter for post-filtering or anti-aliasing purposes.