Dual bridge 6 Gsample/s track and hold circuit in AlGaAs/GaAs/AlGaAs HEMT technology

A T&H circuit with a sampling rate of 6Gsample/s has been experimentally demonstrated in AlGaAs/GaAs/AlGaAs HEMT technology. The circuit utilises a dual bridge topology suitable for interleaved ADC circuits, doubling the effective sampling rate with an insignificant increase in area compared to the previously reported solutions.