Patent ID: 9628105
Date: 2017-04-18
CPC Classifications: H03M,H04N

Claim:
1. An electronic circuit having a first node, a second node, and a third node, the electronic circuit comprising: a first capacitor electrically coupled between the first and second nodes; a second capacitor electrically coupled between the second and third nodes; a dynamic resistance element electrically coupled between the first and third nodes for receiving a current input signal from the third node, wherein the dynamic resistance element is configured to have a variable resistance that changes in accordance with a voltage difference across the dynamic resistance element; a charge transfer switch electrically coupled between the first node and the dynamic resistance element to enable charge transfer from the first capacitor to the third node through the dynamic resistance element when the charge transfer switch is closed; a recharge circuit electrically coupled across the first capacitor to recharge the first capacitor to a common voltage when the charge transfer switch is open; and a comparator having a first terminal electrically coupled to the third node, a second terminal electrically coupled to a reference voltage, and an output terminal electrically coupled to the charge transfer switch.