MAX7414EPA+

Overview

The MAX7414EPA+ is a 5th-order, lowpass, switched-capacitor filter (SCF) from the Maxim Integrated family. It operates from a single +3V supply and features a Butterworth response for a maximally flat passband. The corner frequency is clock-tunable from 1Hz to 15kHz using a 100:1 ratio. Supply current is 1.2mA in operating mode and drops to 0.2µA in shutdown. It includes an offset adjust pin, supports internal or external clocking, and is housed in an 8-pin PDIP package with an operating temperature range of -40°C to +85°C.

Feature Summary

• Butterworth filter response providing a maximally flat passband
• Clock-tunable corner frequency adjustable from 1Hz to 15kHz
• Low-power operation with dedicated shutdown mode
• Internal oscillator or external clock input options

Applications

• ADC anti-aliasing
• DAC postfiltering
• Speech processing
• Air-bag electronics

Procurement Notes

Verify the component against official Analog Devices documentation to confirm the specific ordering suffix matches the required voltage and temperature grade. Ensure the datasheet revision aligns with your design requirements before finalizing procurement.

Selection Notes

Select this part when a maximally flat Butterworth response is required for signal conditioning. It is suitable for applications needing precise corner frequency control via external clocks or simple tuning via internal capacitors within the specified 1Hz to 15kHz range.

Part Context

This component belongs to the MAX7409/MAX7410/MAX7413/MAX7414 family of 5th-order lowpass switched-capacitor filters. While other variants offer Bessel responses or +5V operation, the MAX7414 specifically provides the Butterworth characteristic optimized for single +3V supply systems.

Replacement Considerations

The MAX7410 serves as a functional substitute if the system can accommodate a +5V supply instead of +3V. Other family members like the MAX7413 provide similar filtering but feature a Bessel response rather than Butterworth.