Maxim Integrated Products has a dual channel voltage-variable attenuator (VVA) spanning the 250MHz to 4000MHz frequency band.

As a block for wireless infrastructure applications, it delivers 44dB of linearly controlled dynamic range with S21 flatness over frequency and all attenuation settings.

The MAX19790 is composed of two SiGe BiCMOS attenuators in one monolithic IC.

Each attenuator incorporates a patented control circuit that provides 22dB of attenuation range with a linear control slope of 10dB/V.

Both attenuators share a common analogue control circuit, and they can be cascaded together to yield 44dB of total dynamic range with a combined linear control slope of 20dB/V.

When operating over any 125MHz contiguous band between 950MHz to 2150MHz, which is a common band for SatCom applications, the MAX19790 delivers typical and maximum flatness levels of merely 0.13dB and 0.89dB peak-to-peak, respectively, through 30dB to total attenuation.