The HMC424A-Die from Analog Devices is a RF Variable Attenuator with Frequency 0.1 to 13 GHz, Attenuation Range 0.5 to 31.5 dB, Attenuation Step 0.5 dB, Attenuation Accuracy ±0.5 dB, Power 23 to 25 dBm(P0.1dB). Tags: Die, Digital. More details for HMC424A-Die can be seen below.