Patent ID: 8866532

Claim:
A passive integrator comprising: a first switch having a control terminal and first and second terminals, the first terminal coupled for receiving a first source of potential; a first diode that fully depletes of charge at an operating voltage, the first diode having a first terminal directly coupled to the second terminal of the first switch; a second switch having a control terminal and first and second terminals, the first terminal of the second switch directly coupled to the first terminal of the first diode and to the second terminal of the first switch; and a second charge storage element having first and second terminals, the first terminal of the second charge storage element coupled to the second terminal of the second switch; and a third switch having a control terminal and first and second terminals, the first terminal coupled for receiving a first source of operating potential and the second terminal commonly coupled to the first terminal of the second charge storage element and to the second terminal of the second switch.