Implantable cardiac defibrillator employing a switched capacitor

Details Implantable cardiac defibrillator employing a switched capacitor Implantable cardiac defibrillator employing a switched capacitor

1989-05-19

1990-10-23

Cohen, Lee S.

Surgery

Truss

Pad

128419PG, 128419P, A61N 139

Patent

active

049644068

ABSTRACT:
An implantable cardiac defibrillator employing a switched capacitor stage wherein the switches are clocked in a non-50%/50% ratio such that an operational amplifier has greater than 50% of the clock period to acquire the desired voltage and less than 50% of the clock period to hold the acquired voltage, thereby allowing the circuit to run at an overall lower current drain.

REFERENCES:
patent: 4596252 (1986-06-01), Nelson
patent: 4726379 (1988-02-01), Altman et al.
patent: 4779618 (1988-10-01), Mund et al.
patent: 4790318 (1988-12-01), Elmqvist et al.
patent: 4811738 (1989-03-01), Economides et al.
Brodersen et al., "MOS Switched-Capacitor Filters", Proceedings of the IEEE, vol. 67, No. 1, Jan. 1979, pp. 61-75.

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