MAX7408EPA+

Overview

The MAX7408EPA+ is a 5th-order, lowpass, elliptic switched-capacitor filter operating from a single +5V supply. It features a clock-to-corner frequency ratio of 100:1, allowing corner frequencies from 1Hz to 15kHz. The device provides a transition ratio of 1.6 and typically 53dB of stopband rejection. Supply current is 1.2mA in operating mode and reduces to 0.2µA in shutdown mode. It operates within a temperature range of -40°C to +85°C and is housed in an 8-pin Plastic DIP package.

Feature Summary

• Elliptic lowpass response with sharp rolloff
• Clock-tunable corner frequency from 1Hz to 15kHz
• Low power consumption with dedicated shutdown mode
• Single-supply operation at +5V

Applications

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

Procurement Notes

Verify the component matches the specific ordering suffix for the extended industrial temperature range (-40°C to +85°C) and the PDIP-8 package configuration. Confirm that the datasheet revision aligns with the required specifications for your design implementation.

Selection Notes

Select this part when a steep rolloff with moderate stopband rejection is required. The MAX7408 offers a transition ratio of 1.6, which differs from the sharper but lower-rejection MAX7411 variant. Ensure the system clock or internal oscillator capacitor supports the desired 100:1 tuning ratio.

Part Context

This component belongs to the MAX7408/MAX7411/MAX7412/MAX7415 family of 5th-order elliptic filters. While sharing similar architectures, the MAX7408 is distinct due to its +5V supply requirement and specific 1.6 transition ratio, differentiating it from the +3V variants and the sharper rolloff MAX7411.

Replacement Considerations

The MAX7408CPA is a commercial grade alternative with a 0°C to +70°C range. The MAX7408CUA offers the same temperature range in a µMAX package. Direct functional substitutes include the MAX7411, though it has a different transition ratio.