Bidirectional current-controlled PTAT current source

Author

Fabre, Alain

Author_Institution

Lab. d´´Electron., Ecole Centrale de Paris, Chatenay-Malabry, France

Volume

41

Issue

12

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

922

Lastpage

925

Abstract

In this paper a new current-source proportional to absolute temperature (PTAT) is introduced. It is adjustable and does not require any starting current. The circuit is obtained from a mixed translinear loop of only four transistors. A first generation current conveyor is added in order to obtain a floating output current. Its sign and its slope can both be modified from the value of the control current I₁. SPICE simulation results are given, They indicate that the circuit compares favorably with conventional PTAT current sources. Experimental results, which prove to be in agreement with the theory, are also given

Keywords

SPICE; analogue integrated circuits; circuit analysis computing; constant current sources; current conveyors; digital simulation; SPICE simulation results; control current; current-controlled PTAT current source; first generation current conveyor; floating output current; mixed translinear loop; proportional to absolute temperature; Active circuits; Circuit simulation; Impedance; Mirrors; Null value; SPICE; Switching circuits; Temperature; Voltage;

fLanguage

English

Journal_Title

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

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/81.340860

Filename

340860