HMC1122's bidirectional, interchangeable RF inputs and outputs are internally matched to 50Ω. The RF inputs and outputs do not require any external matching components.
HMC1122 attenuators incorporate a driver that provides both serial and parallel control of the attenuator. The devices also feature a user-selectable power-up state and a serial output port for cascading other serial-controlled components. Safe-state transitions ensure the safe operation of the components in the RF signal chain.