A 3-V 5.4-mW BiCMOS Track&Hold circuit with sampling frequency up to 150 MHz

A Track&Hold circuit to he used in front of a highspeed analog-to-digital converter (ADC) is proposed. In order to achieve the required resolution with a single 3-V supply, a fully differential closed-loop architecture is used. The Track&Hold circuit processes a differential 1-Vpp output signal swing and achieves more than 8-b linearity with sampling frequency up to 150 MHz, In these renditions, the total power consumption is 5.4 mW from a single 3-V supply, The circuit has bern realized in a 0.7-mu m BiCMOS technology, and its active area is about 0.15 mm(2).