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A Precision Curvature-Compensated CMOS Bandgap Reference
by
BANG-SUP SONG, STUDENTMEMBER, IEEE,ANDPAUL R. GRAY, FELLOW,IEEE
IEEE JOURNAL OF SOLID-STATE CIRCUITS, VOL. SC-18, NO. 6, DECEMBER 1983
Abstract—A precision curvature-compensated switched-capacitor bandgap
reference is described which employs a standard digital CMOS process
and achieves temperature stability significantly lower than has previously
been reported for CMOS circuits. The theoretically achievable temperature
coefficient approaches 10 ppm/ 0 C over the commercial temperature
range utilizing a straightforward room temperature trim procedure. Experimental
data from monolithic prototype samples are presented which are
consistent with theoretical predictions. The experimental prototype circuit
occupies 3500 milsz and dissipates 12 mWwith+5Vpowersupplies,The
proposedreferenceis helieved to be suited for use in monolithic data
acquisition systems with resolutions of 10 to 12 bits.
[ 本帖最后由 semico_ljj 于 2006-10-20 13:06 编辑 ] |
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