Title :
Small-range current copier cell
Author_Institution :
Inst. of Electron., Humboldt Univ., Berlin, Germany
Abstract :
A current copying principle based on the output resistance of a bipolar or unipolar transistor is proposed. Compared to the common unipolar transconductance-based technique, the range of current variations is reduced as is the sensitivity to errors in the memorised voltage. Noise may be reduced using (lateral) bipolar transistors.
Keywords :
constant current sources; reference circuits; bipolar transistor output resistance; current variation range; error sensitivity; memorised voltage; noise reduction; small range current copier cell; unipolar transistor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19911225
