MAX292ESA+

Overview

The MAX292ESA+ is an 8th-order lowpass switched-capacitor filter in the MAX291 series, featuring a Bessel response for low overshoot and fast settling. It operates with a single +5V supply (4.75V to 5.5V) or dual ±5V supplies. The device provides a clock-to-corner frequency ratio of 100:1, allowing corner frequencies from 0.1Hz to 25kHz. It includes an internal oscillator controlled by an external capacitor or accepts an external clock signal. An uncommitted operational amplifier is integrated for post-filtering or anti-aliasing tasks.

Feature Summary

• Bessel filter response providing linear phase shift and minimal step input overshoot
• Clock-tunable corner frequency range from 0.1Hz to 25kHz
• Integrated uncommitted operational amplifier for additional filtering stages
• Internal oscillator capability or support for external clock signals

Applications

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

Procurement Notes

Verify the specific suffix against official documentation to confirm temperature range and package type. Confirm RoHS compliance status through manufacturer datasheets. Ensure the ordering code matches the required operating temperature and physical footprint specifications before procurement.

Selection Notes

Select this component when a Bessel response is required for applications needing fast settling times and preserved signal shape. Verify that the system clock can be maintained within the 100:1 ratio relative to the desired corner frequency. Ensure power supply constraints align with the specified single or dual voltage requirements.

Part Context

This part belongs to the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. While the MAX291 and MAX295 utilize Butterworth responses, the MAX292 and MAX296 are specifically designed with Bessel characteristics. All variants share similar pinouts and operational principles but differ in their frequency response profiles.

Replacement Considerations

MAX292CSA+

FAQ

How is the corner frequency determined?

The corner frequency is set by the clock frequency applied to the CLK pin, maintaining a fixed 100:1 ratio between the clock and the corner frequency.

What is the purpose of the uncommitted op amp?

The uncommitted op amp can be configured as a continuous-time lowpass filter for post-filtering, anti-aliasing, or clock-noise attenuation.

Can the device operate with a single supply?

Yes, the device supports single-supply operation at +5V or dual-supply operation at ±5V.