The HL9438 from HYPERLABS is an Inner DC Block that operates from 160 kHz to 95 GHz. It has a breakdown voltage of up to 30 V and an insertion loss of less than 2 dB. This DC block has an amplitude match of ±0.1 dB and a phase match of ±4° (at 40 GHz). It is available in a module that measures 29 x 9.57 x 9.57 mm and has 1.0 mm jack/plug connectors. This DC Block is suitable for use in PAM4 communication systems, optical communication systems, high-speed data systems, level shifting, cascading, and for interfacing between devices with incompatible DC operating points.