MAX19790ETX+

Overview

The MAX19790ETX+ is a dual analog voltage variable gain attenuator designed for 50Ω systems operating between 250 MHz and 4 GHz. Each channel provides a 22 dB attenuation range with a control circuit for precise adjustment. The device features a 36-WQFN exposed pad package, operates on a 3.3 V supply, and handles up to 2.1 W of power. It supports an attenuation range of 22 dB to 44 dB across the specified frequency band.

Feature Summary

• Dual-channel architecture providing independent analog voltage control for each path
• Wideband operation covering 250 MHz to 4 GHz in standard 50Ω environments
• Integrated control circuitry enabling precise variable gain attenuation management

Applications

• RF signal conditioning in wireless communication infrastructure
• Test and measurement equipment requiring variable attenuation
• Military and aerospace radar systems

Procurement Notes

Verify component authenticity through authorized Analog Devices channels or certified distributors. Confirm RoHS compliance status and check current lifecycle availability, as restricted supply conditions may apply. Ensure proper handling procedures for the TQFN-36 package during assembly to maintain electrical integrity and thermal performance.

Selection Notes

Select this component when dual-channel variable attenuation is required within the 250 MHz to 4 GHz spectrum. Consider the 36-WQFN package for space-constrained designs. Verify that the 3.3 V supply voltage aligns with system power rails and that the 2.1 W power rating meets signal handling requirements.

Part Context

Part of the MAX1979x series of RF attenuators from Maxim Integrated. This series includes variants like the MAX19792 and MAX19794, offering different frequency ranges and attenuation characteristics. The MAX19790 specifically targets the sub-4 GHz band with dual-channel capability.

Replacement Considerations

MAX19792ETX+ offers similar dual-channel functionality but operates at higher frequencies (500 MHz to 3 GHz). Evaluate frequency coverage and attenuation range differences before substitution.