The HMC230MS8 from Analog Devices is a RF Variable Attenuator with Frequency 750 MHz to 2 GHz, Attenuation Range 4 to 28 dB, Attenuation Step 28 dB, Power 0.39 W, P1dB 19 to 20 dBm. Tags: IC, Programmable, Digital. More details for HMC230MS8 can be seen below.