Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – By integrating
Patent
1997-04-08
1999-05-18
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
By integrating
327344, 341172, 341121, H03M1/12
Patent
active
059053984
ABSTRACT:
A programmable integrated circuit capacitor array includes a plurality of binarily weighted capacitors (16) and a plurality of switches (18) selectively coupling the capacitors in parallel between first and second terminals. A control circuit (10) responds to a plurality of capacitance selection inputs (CS0,1,2) in conjunction with a plurality of trim inputs (TR0,1) and a sign input (TRS) to produce a plurality of selection signals (SEL0,1 . . . 7) on control electrodes of the switches to couple one or more of the capacitors and thereby provide an accurate value of the desired capacitance between the first and second terminals despite any manufacturing deviations in capacitance per unit area.
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Kalthoff Timothy V.
Todsen James L.
Burr-Brown Corporation
Callahan Timothy P.
Shin Eunja
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