The HMC1018 from Analog Devices is a RF Variable Attenuator with Frequency 100 MHz to 30 GHz, Attenuation Range 4.5 to 35.5 dB, Attenuation Step 1 dB, Power 0.31 W, P1dB 25 dBm. Tags: IC, Programmable, Digital. More details for HMC1018 can be seen below.