ISG-D5640 Quad Channel 53Gbaud/s MZ Driver 

ISG-D5640 is a high performance quad channel 53Gbaud/s differential input, differential output MZ driver die for 400Gbps applications. The driver can support input signals up to 500mVpp differential. The device can have an output up to 3.5Vpp output swing in linear mode with low Total Harmonic Distortion (THD). ISG-D5640 is designed to be DC coupled to the modulator die. The channel pitch is 625um. The driver offers SPI control for setting the gain and bias of the driver. It also allows monitoring the DC common mode voltage between the driver and modulator to accurately set the modulator bias on the PIC. The chip offers functionality to control the heaters on the Silicon PIC heater and operate two independent CW laser in an APC loop if desired.