MAX7425CUA

Overview

The MAX7425CUA is a fifth-order low-pass elliptic switched-capacitor filter housed in an 8-pin µMAX package. It operates with a clock frequency up to 1 MHz and features a cutoff frequency of 45 kHz. The device utilizes BICMOS technology for high performance. Key electrical parameters include a passband ripple of 0.05 dB, stopband attenuation exceeding 60 dB at 90 kHz, and a dynamic range of 80 dB. It functions within a supply voltage range of 3 V to 5.5 V, consuming typical current of 1.5 mA.

Feature Summary

• Provides sharp roll-off characteristics inherent to elliptic filter topology
• Integrates fifth-order filtering functionality in a compact surface-mount package
• Utilizes switched-capacitor architecture for precise frequency control via external clock

Applications

• Audio signal processing requiring steep anti-aliasing
• Instrumentation systems needing narrow bandpass filtering
• Communication channels demanding high selectivity

Procurement Notes

Verify the suffix 'CUA' corresponds to the specific 8-pin µMAX package variant. Confirm RoHS compliance status indicated by the '+' symbol if required. Ensure the supplier provides original manufacturer documentation matching the Analog Devices or Maxim Integrated part number to avoid counterfeit components.

Selection Notes

Select this component when a fixed 45 kHz cutoff with elliptic response is required. Consider the external clock dependency for frequency accuracy. Evaluate the 8-pin footprint constraints against available PCB space. Compare power consumption requirements against the 1.5 mA typical draw.

Part Context

This part belongs to the MAX7425 family of switched-capacitor filters. It shares architectural similarities with other devices in the series but differs in order and cutoff specifications. The CU designation typically indicates commercial temperature range operation.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.