Title :
A JFET-based circuit for realizing a precision and linear floating voltage-controlled resistance
Author :
Holani, R. ; Pandey, P.C. ; Tiwari, N.
Author_Institution :
Dept. of Biosci. & Bioeng., Indian Inst. of Technol. Bombay, Mumbai, India
Abstract :
A JFET-based circuit for realizing a precision and linear floating voltage-controlled resistance (VCR) is presented for use in analog multipliers and programmable analog circuits and as a resistance mirror. It uses a matched JFET pair along with an op amp based negative feedback for realizing a precision resistance and a feedback of the source and drain voltages to the gate for realizing a linear floating resistance. The circuit operation is validated through circuit simulation and practical testing.
Keywords :
analogue circuits; analogue multipliers; junction gate field effect transistors; JFET-based circuit; analog multipliers; linear floating voltage-controlled resistance; op amp based negative feedback; precision resistance; programmable analog circuits; resistance mirror; JFETs; Logic gates; Operational amplifiers; Resistance; Resistors; Video recording; Voltage control; JFET; programmable analog circuits; self-tracking circuit; voltage-controlled resistance;
Conference_Titel :
India Conference (INDICON), 2014 Annual IEEE
Conference_Location :
Pune
Print_ISBN :
978-1-4799-5362-2
DOI :
10.1109/INDICON.2014.7030568
