MAX292CSA+T

Overview

The MAX292CSA+T is an 8th-order, lowpass, switched-capacitor filter in the MAX291 series. It provides a Bessel response characterized by low overshoot and fast settling times. The device operates with a clock-to-corner frequency ratio of 100:1, supporting corner frequencies from 0.1Hz to 25kHz. It requires no external resistors or capacitors for filter configuration and can utilize either an internal oscillator or an external clock signal. The component functions on single +5V or dual ±5V supplies within the 0°C to +70°C temperature range.

Feature Summary

• Bessel filter response providing low overshoot and fast settling
• Clock-tunable corner frequency range from 0.1Hz to 25kHz
• Internal oscillator or external clock input capability
• Integrated uncommitted operational amplifier

Applications

• ADC anti-aliasing filtering
• DAC post-filtering
• Noise analysis
• 50Hz/60Hz line-noise filtering

Procurement Notes

Verify the specific suffix 'CSA' corresponds to the 8-pin SO package and the commercial temperature range (0°C to +70°C). Confirm RoHS compliance status via the '+' designation. Ensure the ordering code matches the exact manufacturer part number to avoid functional discrepancies.

Selection Notes

Select this component when a maximally flat passband is not required but linear phase and rapid settling are critical. The MAX292 is suitable for multiplexed systems where channel switching occurs frequently. Verify that the available clock frequency allows for the desired corner frequency within the specified 100:1 ratio.

Part Context

This component belongs to the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. While the MAX291 and MAX295 offer Butterworth responses, the MAX292 and MAX296 provide Bessel characteristics. The MAX292 specifically targets applications requiring minimal step-response overshoot compared to its Butterworth counterparts.

Replacement Considerations

MAX291CSA+T offers a Butterworth response instead of Bessel. MAX295CSA+T supports higher corner frequencies up to 50kHz with a 50:1 clock ratio. MAX292ESA+T provides the same electrical function but covers an extended industrial temperature range of -40°C to +85°C.

FAQ

How does the MAX292 differ from the MAX291?

The MAX292 provides a Bessel filter response with low overshoot and fast settling, whereas the MAX291 provides a Butterworth response with a maximally flat passband.

Can the MAX292 operate with a single supply?

Yes, it can operate with a single +5V supply or dual ±5V supplies.

What is the purpose of the uncommitted op amp?

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