MAX7407ESA+T

Overview

The MAX7407ESA+T is an 8th-order, lowpass, elliptic switched-capacitor filter operating from a single +3V supply. It features a transition ratio of 1.2 and typical stopband rejection of 60dB. The corner frequency ranges from 1Hz to 10kHz with a 100:1 clock-to-corner ratio. Supply current is 2mA in normal mode and 0.2µA in shutdown. Output offset voltage is ±5mV. It operates within -40°C to +85°C temperature range.

Feature Summary

• 8th-order lowpass elliptic filter response
• Low noise and distortion performance
• Clock-tunable corner frequency
• Single-supply operation

Applications

• ADC anti-aliasing
• Speech processing
• Post-DAC filtering
• Air-bag electronics
• CT2 base stations

Procurement Notes

Verify the component authenticity by checking the manufacturer markings against official documentation. Ensure the package type matches the required specifications for your design. Confirm the temperature range meets your operational requirements. Check for any specific ordering suffixes that may affect availability or performance. Always refer to the latest datasheet for accurate information.

Selection Notes

Select this component when an 8th-order lowpass elliptic filter is needed with a sharp rolloff. Consider the +3V supply requirement and the 100:1 clock-to-corner frequency ratio. Evaluate the need for low power consumption and the ability to adjust the output offset. Ensure the operating temperature range fits your application environment.

Part Context

The MAX7407 is part of the MAX7400 family of 8th-order, lowpass, elliptic, switched-capacitor filters. This family includes variants like the MAX7400, MAX7403, and MAX7404, which differ in supply voltage and filter response characteristics. The MAX7407 specifically operates at +3V and offers a transition ratio of 1.2.

Replacement Considerations

MAX7400ESA+T, MAX7403ESA+T, MAX7404ESA+T are pin-compatible alternatives within the same family. Verify supply voltage compatibility (+5V vs +3V) and filter response differences (transition ratio 1.5 vs 1.2) before substitution.

FAQ

What is the transition ratio of the MAX7407?

The MAX7407 has a transition ratio of 1.2.

How does the MAX7407 achieve low power consumption?

It features a shutdown mode that reduces supply current to 0.2µA.

Can the MAX7407 be used with dual supplies?

Yes, it can operate with dual supplies by connecting COM to system ground and GND to the negative supply.