VVA IC Features 44-dB Range To 4 GHz

Model MAX19790 is a dual-voltage variable attenuator (VVA) from Maxim Integrated Products that operates from 250 to 4000 MHz. Suitable for use in wireless infrastructure, satellite communications, and point-to-point communications systems, the VVA has a 44-dB dynamic range that is flat across frequency and attenuation settings. It incorporates two VA circuits in one integrated circuit (IC) using a proprietary, monolithic SiGe BiCMOS process. Each circuit provides 22-dB attenuation range with linear control slope of 10 dB/V. Both attenuators share a common analog control circuit with combined linear control slope of 20 dB/V. When operating over any 125-MHz band from 950 to 2150 MHz, the VVA has typical flatness of 0.13 dB and peak-to-peak flatness of 0.89 dB through 30 dB total attenuation. The VVA is supplied in a 6 x 6 mm lead-free 36-pin TQFN package.

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