The HXR14400 Transimpedance Linear Amplifier quad channel array is a member of the family of Optical Receiver Transmitter Array (ORTA) products for PAM4 modulation format targeted at the parallel optical links market. Together with a PIN detector array or discrete detectors, high capacity, high availability optical link can be designed for the next generation Ethernet and Datacom applications. The 3.3V SiGe device integrates the linear transimpedance pre-amplifier, the linear post-amplifier and a versatile CML output stage for four optical channels.