Temperature stable voltage controlled current source

This paper proposes a complementary bipolar junction transistor circuit that supplies a nominally temperature invariant output current whose value is linearly related to a user defined static control voltage. The circuit developed herein is a true current source, as opposed to a current sink. It effectively functions as a static transconductor in that the controlling voltage is not limited to small signals, very little current is conducted by the controlling port, and very high static output resistance characterizes the controlled port. Moreover, the effective input-to-output transconductance is virtually independent of the absolute values of transistor parameters. Instead, its value is determined by a designable circuit resistance