MAX19794ETX+

Overview

The MAX19794ETX+ is a dual analog voltage variable attenuator designed for 50-ohm systems operating between 10 MHz and 500 MHz. It provides a total attenuation range of 46.4 dB with a resolution of 0.18 dB per step, controlled via a serial interface. The device utilizes SiGe technology and is housed in a TQFN-36 package. It supports an input power level up to +20 dBm while maintaining low insertion loss and high linearity.

Feature Summary

• Dual-channel architecture with independent control for each path
• Patented control circuitry ensures monotonic attenuation response
• Serial digital interface simplifies system integration and programming

Applications

• Wireless infrastructure base stations
• Test and measurement equipment
• Software-defined radio systems

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors. Confirm RoHS compliance status and check current supply chain availability as distribution may be limited. Ensure storage conditions meet manufacturer specifications to prevent moisture sensitivity issues prior to reflow soldering.

Selection Notes

Select this component when precise, wide-range attenuation control is required in the VHF/UHF bands. Evaluate thermal performance within the TQFN-36 package against system power dissipation limits. Compare insertion loss and linearity specifications against alternative SiGe solutions to ensure compatibility with existing RF front-end architectures.

Part Context

This part belongs to the MAX19794 series of voltage variable attenuators from Maxim Integrated. It complements other RF control components by offering high-resolution digital adjustment. The series targets applications requiring reliable signal level management in complex wireless communication environments.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model.