Ab.~tract—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.
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发表于 2006-11-2 18:41:30
