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

fYear

2014

fDate

11-13 Dec. 2014

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

India Conference (INDICON), 2014 Annual IEEE

Conference_Location

Pune

Print_ISBN

978-1-4799-5362-2

Type

conf

DOI

10.1109/INDICON.2014.7030568

Filename

7030568