Patent ID: 9076554
Filing Date: 2015-07-07
Classification: G11C,H01L,H03F,H03M

Abstract:
1. A sample and hold amplifier comprising: an operational amplifier having a negative input, a positive input coupled to ground, and an output; a non-linear capacitor having a first terminal, and a second terminal coupled to the negative input of the operational amplifier; a linear capacitor having a first terminal, and a second terminal coupled to the negative input of the operational amplifier; a first switch coupled between the first terminal of the non-linear capacitor and the output of the operational amplifier; a second switch coupled between the first terminal of the non-linear capacitor and ground; a third switch coupled between an input node and the negative input of the operational amplifier; a fourth switch coupled between a first terminal of the linear capacitor and ground; and a fifth switch coupled between a first terminal of the linear capacitor and the output of the operational amplifier.