Patent ID: 9692376
Date: 2017-06-27
CPC Classifications: H03F,H03K

Claim:
1. A switched capacitor circuit comprising: two or more capacitors arranged in a switched capacitor circuit configuration; a comparison device comparing a node at an input of the comparison device whose potential varies with the charging of one or more of said switched capacitors; two or more current sources coupled to said two or more capacitors and to said comparator, wherein a first current source charges at least two of said capacitors switched together in series during the charge portion of a cycle, and a second current source having a current proportional to a current of the first current source charges at least one of but at least one fewer of said two or more capacitors coupled to the node of the comparison device through the switched capacitor circuit configuration during the charge portion of said cycle; and wherein said current sources are enabled at the beginning of said charge portion of said cycle, and said comparison device disables said current sources once said node reaches a reference potential.