Title :
A high-input-impedance buffer
Author :
Hribik, Jan ; Lanyi, Stefan ; Hruskovic, Miloslav
Author_Institution :
Dept. of Radio Electron., Slovak Univ. of Technol., Bratislava
Abstract :
A circuit diagram and an equivalent circuit of high-input-impedance buffer stage with bootstrapped input biasing resistor and power supply nodes are given. The efficiencies of the bootstrapping of the input biasing resistor and the power supply nodes are simulated in the equivalent circuit. The analysis of the equivalent circuit of the buffer leads to a set of equations for calculation of the voltage gain and the input impedance. Experimental results show the expected very high input impedance of the buffer.
Keywords :
bootstrap circuits; buffer circuits; equivalent circuits; power supply circuits; bootstrapped input biasing resistor; equivalent circuit; high-input-impedance buffer stage; power supply nodes; Capacitance; Capacitors; Circuit testing; Equivalent circuits; Frequency; Impedance; Power supplies; Resistors; Signal processing; Voltage; High-input-impedance buffer; bootstrapping; input impedance; voltage gain;
Conference_Titel :
Radioelektronika, 2008 18th International Conference
Conference_Location :
Prague
Print_ISBN :
978-1-4244-2087-2
Electronic_ISBN :
978-1-4244-2088-9
DOI :
10.1109/RADIOELEK.2008.4542707
