The HMC346 from Analog Devices is a RF Variable Attenuator with Frequency DC to 20 GHz, Attenuation Range 22 to 31.5 dB, Power 0.32 W, IIP3 25 dBm, Insertion Loss 1.9 to 3.1 dB. Tags: IC, Voltage Controlled. More details for HMC346 can be seen below.