MAX7408EUA+T

Overview

The MAX7408EUA+T is a fifth-order, lowpass, elliptic switched-capacitor filter designed for single-supply operation. It operates from a +5V supply and features a clock-to-corner frequency ratio of 100:1, allowing corner frequencies between 0.001kHz and 15kHz. The device provides a transition ratio of 1.6 with typical stopband rejection of 53dB. Supply current is 1.2mA in operating mode and reduces to 0.2µA in shutdown mode. Total harmonic distortion plus noise is typically -80dB. It is housed in an 8-pin µMAX package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Fifth-order elliptic lowpass filtering architecture
• Clock-tunable corner frequency capability
• Low-power shutdown mode functionality
• Single-supply voltage operation

Applications

• ADC anti-aliasing
• Post-DAC filtering
• Speech processing

Procurement Notes

Verify the component authenticity by checking the manufacturer markings against official documentation. Confirm that the ordering suffix matches the required electrical characteristics and temperature range specifications before finalizing procurement decisions.

Selection Notes

Select this component when a sharp rolloff with high stopband rejection is required for low-power applications. Ensure the system clock frequency aligns with the desired corner frequency using the 100:1 ratio. Verify that the +5V supply requirement fits the target power budget.

Part Context

This part belongs to the MAX7408/MAX7411/MAX7412/MAX7415 family of elliptic switched-capacitor filters. The MAX7408 variant specifically targets +5V systems with a transition ratio of 1.6. Other family members offer different voltages or transition ratios to suit various design constraints.

Replacement Considerations

The MAX7411 offers a transition ratio of 1.25 but maintains the same +5V supply requirement. The MAX7412 and MAX7415 operate at +3V and are not direct pin-compatible replacements without supply voltage adjustments.