A simple configuration for realizing voltage-controlled impedances

Author

Senani, Raj ; Bhaskar, D.R.

Author_Institution

Dept. of Electron. & Commun. Eng., Delhi Inst. of Technol., India

Volume

39

Issue

1

fYear

1992

fDate

1/1/1992 12:00:00 AM

Firstpage

52

Lastpage

59

Abstract

A simple configuration is proposed that incorporates an effective cancellation of the nonlinearity of the V_DS-i _D characteristics of the FET to produce a voltage-controlled resistance (VCR) with linear range considerably more extended than other conventional FET-based VCRs. The configuration is shown to be simpler than op-amp-JFET based VCRs yet is more versatile than the previously known circuits. It makes possible the realization of VCC and VCL elements from the same configuration, which cannot be realized from the earlier circuits. CMOS versions of the proposed schemes of the VCC and VCL are suggested

Keywords

CMOS integrated circuits; active networks; insulated gate field effect transistors; CMOS; FET; VCC elements; VCL elements; linear range; nonlinearity; voltage-controlled capacitance; voltage-controlled impedances; voltage-controlled inductance; Capacitance; Circuits; Dynamic range; FETs; Impedance; Operational amplifiers; Resistors; Video recording; Voltage; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.109244

Filename

109244