MAX297CPA+

Overview

The MAX297CPA+ is an active filter IC from Analog Devices Inc./Maxim Integrated, featuring an 8th-order lowpass elliptic response implemented via switched-capacitor technology. It operates with a single 5 V supply and supports a cutoff frequency of 50 kHz. The component is housed in an 8-pin PDIP package and is designed for surface mount or through-hole installation within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Provides high-selectivity filtering using an 8th-order elliptic transfer function.
• Utilizes switched-capacitor architecture for precise frequency control without external passive components.

Applications

• Signal conditioning in data acquisition systems
• Anti-aliasing filters in analog-to-digital conversion stages
• Noise reduction in sensor interface circuits

Procurement Notes

Verify the specific suffix 'CPA+' against the manufacturer's current product lifecycle status, as availability may be restricted. Confirm that the PDIP-8 package aligns with your board layout requirements. Ensure the 50 kHz cutoff frequency meets your system's signal processing needs before finalizing the procurement order.

Selection Notes

Select this component when a fixed 8th-order elliptic response is required for sharp roll-off characteristics. The switched-capacitor design eliminates the need for external resistors and capacitors, simplifying the circuit layout. Ensure the operating clock frequency allows for the desired 50 kHz cutoff while maintaining adequate stopband attenuation for your application.

Part Context

This part belongs to the MAX297 series of active filters, which are designed for versatile signal processing tasks. The MAX297CPA+ variant specifically denotes the commercial temperature grade and PDIP packaging. It serves as a specialized solution for applications demanding high-order filtering performance in a compact integrated form factor.

Replacement Considerations

Consult official cross-reference guides for direct functional equivalents. Verify pin compatibility and electrical specifications if considering alternative suppliers. Ensure any substitute maintains the 8th-order elliptic characteristic and switched-capacitor operation mode.