Patent ID: 6836171
Filing Date: 2004-12-28
Classification: G06G

Abstract:
An integration circuit comprising:input node for receiving an input charge; an integrator including a first amplifier having an input terminal coupled to the input node, an output terminal and a first charge storage device coupled between the input and output terminals; an intermediate node coupled between the input node and ground; a second charge storage device having a first terminal coupled to the intermediate node and a second terminal coupled to an output node of the integration circuit; a first switch device coupled between the input node and the intermediate node; and a second switch device coupled between the output terminal of the integrator and the output node; wherein, during a first phase of operation, the first and second switch devices are open, and the input charge received on the input terminal of the integrator is stored on the first charge storage device; and during a second phase of operation, the first and second switch devices are closed, and the charge stored on the first charge storage device is transferred to the second charge storage device.