A 25 GHz Analog Multiplexer for a 50GS/s D/A-Conversion System in InP DHBT Technology

An analog 2:1 multiplexer for high speed analog multiplexing is presented in InP DHBT technology. The multiplexer features a SNDR above 26 dB with a differential input voltage of 1V-PP and a 3 dB corner frequency above 40GHz. The power consumption of the multiplexer is 1.35W at a supply voltage of 5.5V. The multiplexer is suitable for the realization of a 50GS/s digital-to-analog conversion system, which is more than two times faster than currently available fully sampling rate flexible D/A-conversion systems.