Title :
Am improved tail current source for low voltage applications
Author :
You, Fan ; Embabi, Sherif H K ; Duque-Carrillo, J. Francisco ; Sánchez-Sinencio, Edgar
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
8/1/1997 12:00:00 AM
Abstract :
A new current source for low-voltage applications is proposed. This current source is well suited for biasing differential pairs and source followers. Measured compliance voltage is slightly smaller than that of a single transistor. Its output resistance is a factor of 25 larger than that of a single transistor current source and was measured to be 8 MΩ. The use of the new current source improves the common-mode input range and the common-mode rejection ratio of fully balanced and single-ended differential amplifiers
Keywords :
analogue circuits; constant current sources; differential amplifiers; linear network analysis; 8 Mohm; CMRR; LV operation; common-mode input range; common-mode rejection ratio; differential pair biasing; fully balanced differential amplifiers; low voltage applications; single-ended differential amplifiers; source follower biasing; tail current source; Analog circuits; Circuit topology; Current measurement; Differential amplifiers; Electrical resistance measurement; Helium; Low voltage; Noise level; Tail; Voltage measurement;
Journal_Title :
Solid-State Circuits, IEEE Journal of
