Title :
CMOS two-quadrant multiplier using transistor triode regime
Author :
Filanovsky, I.M. ; Baltes, H.
Author_Institution :
Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada
fDate :
5/1/1992 12:00:00 AM
Abstract :
A CMOS two-quadrant multiplier using a differential pair with controlled current tail is described. A bias circuit with output current proportional to the square of input voltage provides the tail current for the pair. This bias circuit includes an operational amplifier and two nested transistors. One of these transistors is in pinch-off, the other in the triode region of operation. The transistor mismatch and body effect influence are evaluated. The circuit is verified experimentally
Keywords :
CMOS integrated circuits; analogue computer circuits; multiplying circuits; CMOS; bias circuit; body effect; controlled current tail; differential pair; nested transistors; operational amplifier; pinchoff region; transistor mismatch; transistor triode regime; two-quadrant multiplier; Circuits; Filters; Input variables; Laboratories; Operational amplifiers; Resistors; Tail; Threshold voltage; Transconductance; Voltage control;
Journal_Title :
Solid-State Circuits, IEEE Journal of
