Department of Communications and Integrated Systems, Graduate School of Science and Engineering, Tokyo Institute of Technology The Institute of Electronics, Information and Communication Engineers
Shigetaka TAKAGI
Department of Communications and Integrated Systems, Graduate School of Science and Engineering, Tokyo Institute of Technology The Institute of Electronics, Information and Communication Engineers
Nobuo FUJII
Department of Physical Electronics, Graduate School of Science and Engineering, Tokyo Institute of Technology The Institute of Electronics, Information and Communication Engineers
This paper discusses the input range limitation problem in a track-and-hold circuit and the compensation method using a bootstrapped switch. A bootstrapped switch with an additional control circuit is proposed to compensate charge loss in conventional bootstrapped switch circuit. Simulation results using 0.18-μm CMOS process parameters show that the proposed circuit reduces the bootstrap capacitance down to 25% for the conventional circuit.
