MAX7480EPA

Overview

The MAX7480EPA is an eighth-order, lowpass, Butterworth switched-capacitor filter (SCF) designed for single +5V supply operation. It features a clock-tunable corner frequency range from 1Hz to 2kHz, providing a 100:1 clock-to-corner ratio. The device draws 2.9mA in operating mode and reduces to 0.2µA in shutdown mode. It offers -73dB THD + Noise performance with a low output offset of ±5mV. Packaged in an 8-pin DIP, it serves as a compact solution for precision analog signal conditioning.

Feature Summary

• Provides high-order filtering characteristics through integrated switched-capacitor technology without external passive components.
• Enables precise frequency tuning via an external clock signal, allowing flexible adaptation to various signal bandwidths.
• Incorporates a dedicated shutdown mode to minimize power consumption during idle periods.

Applications

• Anti-aliasing filtering preceding Analog-to-Digital Converters (ADCs).
• Post-DAC smoothing to remove quantization noise and image frequencies.
• Low-power sensor signal conditioning requiring tight bandwidth control.

Procurement Notes

Verify the specific suffix EPA confirms the 8-pin DIP package variant. Confirm RoHS compliance status through official manufacturer documentation. Check for obsolescence notices or product change notifications prior to procurement. Ensure the design supports the required +5V single-supply voltage level. Validate that the external clock source meets the frequency stability requirements for the desired cutoff.

Selection Notes

Select this component when a high-order Butterworth response is required in a minimal footprint. It is suitable for applications where external RC networks would consume excessive board space. Consider the need for an external clock generator to set the cutoff frequency. Evaluate if the single +5V supply constraint aligns with the system power architecture. Compare against active RC filters if lower power or different topologies are preferred.

Part Context

The MAX7480 belongs to Maxim Integrated's family of switched-capacitor filters. These devices integrate complex filter functions onto a single silicon die. The EPA designation specifically identifies the plastic dual-in-line package version. This series targets applications demanding high accuracy and low distortion in data acquisition systems.

Replacement Considerations

MAX7480EPA+ is the lead-free equivalent. MAX7480ESA is the surface-mount SOIC alternative. Verify pin compatibility before substitution. Check for updated datasheet revisions affecting electrical specifications.