Patent ID: 9261541
Filing Date: 2016-02-16
CPC Classification: G01R

Claim Text:
1. A sampling system that samples over positive and negative voltage ranges using a single voltage source, the system comprising: an input on which an analog signal is received; a sampling switch, coupled to the input, the sampling switch defining an active state and inactive state for the sampling circuit; at least one bootstrap capacitor, coupled to the sampling switch and the single voltage source, the at least one bootstrap capacitor is charged to a first voltage level of the first voltage source to allow sampling within the negative range and the positive voltage range; a self-switching bootstrap mechanism, coupled to the at least one bootstrap capacitor and sampling switch, the self-switching bootstrap mechanism having a positive feedback mechanism that allows sampling within the negative voltage range and the positive voltage range; and a sampling circuit, coupled to the sampling switch, the sampling circuit sampling the analog signal during the active state.