MAX292CPA+

Overview

The MAX292CPA+ is an 8th-order lowpass switched-capacitor filter with a Bessel response, designed for applications requiring low overshoot and fast settling. It operates within a corner frequency range of 0.1Hz to 25kHz, controlled by a clock-to-corner-frequency ratio of 100:1. The device supports single +4.75V to +11V or dual ±2.375V to ±5.5V supplies. It features an internal oscillator or external clock input, requires no external resistors or capacitors for the filter section, and includes an uncommitted operational amplifier. The component is housed in an 8-pin Plastic DIP package.

Feature Summary

• Bessel filter response providing low overshoot and fast settling times
• Clock-tunable corner frequency from 0.1Hz to 25kHz
• Internal oscillator or external clock 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 ordering suffix against manufacturer documentation to confirm package type and temperature range. Ensure supply voltage requirements match the system design, as the device supports both single and dual supply configurations. Confirm RoHS compliance status through official datasheets before procurement.

Selection Notes

Select the MAX292CPA+ when a Bessel response is required for signal integrity preservation. Ensure the system clock can be maintained at a stable frequency, as the cutoff frequency varies directly with the clock rate. Verify that the input source impedance remains below 10% of the filter's input impedance to maintain performance.

Part Context

The MAX292CPA+ belongs to the MAX291/MAX292/MAX295/MAX296 family of 8th-order lowpass switched-capacitor filters. While the MAX291 offers a Butterworth response, the MAX292 provides a Bessel characteristic. This series allows for easy setup using minimal external components, delivering high performance in a compact footprint.

Replacement Considerations

The MAX291CWE+ serves as a direct functional substitute if a Butterworth response is acceptable instead of Bessel. Other members of the MAX29x family may be considered based on specific corner frequency needs, though response characteristics differ between models.