Unity gain positive feedback integrator with programmable chargi

Details Unity gain positive feedback integrator with programmable chargi Unity gain positive feedback integrator with programmable chargi

1994-12-14

1996-03-12

Cunningham, Terry

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

By integrating

327199, 327215, 327336, 327341, 327482, 327589, H03K 458, H03K 456, H03K 452

Patent

active

054989922

ABSTRACT:
An integrator includes a capacitor and a bootstrap circuit for detecting any leaking charge from the capacitor and replacing it. The integrator also includes a charge injection circuit for adjusting the charge applied to the capacitor in response to a digital control input to the charge injection circuit. The bootstrap circuit has two transistors to sense leaking charge, and two further transistors forming a differential pair. The bootstrap circuit uses positive feedback and unity gain to replenish the lost charge.

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Stahl, "Dual One-Shot Generates Identical-Width Pulses From Both Edges Of Its Input", Electronic Design 23, Nov. 8, 1978 (vol. 23), p. 134.

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