The HL8445 from Hyperlabs is a Kelvin Bias Tee that operates from 50 kHz to 50 GHz. It has a DC breakdown voltage of up to 30 V and a breakdown current of 175 mA. The bias tee has an insertion loss of less than 1.75 dB and a rise time of 7 ps. It has an amplitude match of ±0.2 dB and a phase match of ±4°. This bias tee is available in a module that measures 2.1x 1.3 x 0.425 inches and has SMA mm jack connectors. It is ideal for 112 Gbps PAM4 communications systems, optical communication systems, high-speed data systems, level shifting, cascading, interfacing between devices with incompatible DC operating points, biasing amplifiers, lasers, and optical modulators.
