Title :
An active-feedback cascode current source
Author :
Yang, Howard C. ; Allstot, David J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR, USA
fDate :
5/1/1990 12:00:00 AM
Abstract :
An MOS cascode current source that employs both active and passive series feedback is reported. Small-signal analysis and SPICE simulation results show that a CMOS implementation of the active-feedback cascode current source provides an output open-circuit Thevinin voltage greater than 106 V. This represents an increase of about two orders of magnitude as compared with the conventional cascode current source. The active-feedback cascode current source maintains the same output voltage swing range as the conventional double cascode
Keywords :
CMOS integrated circuits; constant current sources; feedback; CMOS implementation; MOS; SPICE simulation; active-feedback cascode current source; output open-circuit Thevinin voltage; output voltage swing; passive series feedback; small-signal analysis; Analog integrated circuits; Analytical models; Feedback circuits; Helium; Impedance; Mirrors; Negative feedback; Output feedback; SPICE; Voltage;
Journal_Title :
Circuits and Systems, IEEE Transactions on
