MAX19791ETX+T

Overview

The MAX19791ETX+T is a dual analog voltage variable attenuator designed for 50-ohm systems. It operates within a frequency range of 50 MHz to 4 GHz. The device provides a total attenuation range of 23 dB per channel. It features an on-chip 10-bit SPI-controlled digital-to-analog converter (DAC) for precise control. The component is housed in a 36-WFQFN exposed pad package.

Feature Summary

• Dual-channel architecture with integrated 10-bit SPI-controlled DACs
• Analog voltage variable attenuation capability across wide RF bandwidth
• Designed for standard 50-ohm system impedance applications

Applications

• RF signal path gain control in wireless infrastructure
• Attenuation adjustment in test and measurement equipment
• Signal conditioning in high-frequency communication systems

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation. Ensure the supplier provides valid traceability for Analog Devices Inc./Maxim Integrated components. Cross-reference the full part number against current datasheet revisions to confirm pinout and electrical specifications match design requirements.

Selection Notes

Select this component for designs requiring independent dual-channel attenuation control via SPI interface. Consider the 50 MHz to 4 GHz operational range relative to target signal frequencies. Evaluate the 36-WFQFN package dimensions for PCB layout constraints. Verify power dissipation limits against thermal management capabilities in the final assembly environment.

Part Context

This part belongs to the MAX1979x series of dual analog voltage variable attenuators from Maxim Integrated. It shares architectural similarities with models like the MAX19790, MAX19792, and MAX19793, which differ primarily in their specified frequency ranges and control interfaces. The MAX19791 specifically targets the 50 MHz to 4 GHz segment.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.