HL8447

The HL8447 from HYPERLABS is a Kelvin Bias Tee that operates from 50 kHz to 67 GHz. It is specifically designed for applications where both RF and DC signals are applied to the device under test (DUT) and precision measurements are required. This type of bias tee eliminates DC biasing errors as the sense coil allows for accurate measurements of the DC voltage applied across the DUT. It has a breakdown voltage of 11/30 V and a breakdown current of less than 175 mA. It has an amplitude match of ±0.2 dB and a phase balance of ±4°. This bias tee has a group delay of 115 ps and a rise time of 5 ps. 

The HL8447 is available as a module that measures 2.100 x 1.300 x 0.425 inches and has SMA (female) connectors. This 50-Ohm bias tee is ideal for use in 112 Gbps PAM4 signaling, optical communication systems, high-speed data systems, and interfacing between devices with incompatible DC operating points.