MAX7480ESA+T

Overview

The MAX7480ESA+T is an active switched-capacitor filter manufactured by Analog Devices Inc. under the Maxim Integrated brand. It implements an eighth-order lowpass Butterworth response within a compact eight-pin SOIC package. The device operates on a single supply voltage ranging from 4.5 V to 5.5 V, with a typical operating voltage of 5 V. It features a cutoff frequency of 10 kHz and supports external clocking for precise frequency control. The component functions across an industrial temperature range of -40°C to +85°C, ensuring stability in demanding environments.

Feature Summary

• Eighth-order lowpass Butterworth filter response
• Switched-capacitor architecture for precise frequency control
• Single-supply operation compatible with standard logic levels

Applications

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

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing components. Confirm that the manufacturer designation aligns with Analog Devices or Maxim Integrated as the current owner of the product line. Ensure the part number matches the exact SOIC-8 footprint required for your PCB layout design.

Selection Notes

Select this component when a high-order passive filter is impractical due to size constraints. The integrated nature eliminates the need for multiple discrete capacitors and resistors. Consider the external clock requirement for setting the cutoff frequency accurately relative to the desired signal bandwidth.

Part Context

This part belongs to the MAX74xx series of active filters designed for portable and battery-powered applications. It replaces bulky LC filters with a small silicon solution. The series is characterized by low power consumption and compatibility with standard digital logic supplies.

Replacement Considerations

The MAX7400ESA+T is a documented substitute offering an elliptic response instead of Butterworth. Verify that the different filter characteristic meets the system requirements before substitution.