公开(公告)号：US20240356507A1

公开(公告)日：2024-10-24

申请号：US18302414

申请日：2023-04-18

Applicant: Apple Inc.

Inventor： Saikrishna Ganta ,  Sudharsan Kanagaraj ,  Siladitya Dey ,  Man-Chia Chen ,  Paritosh Bhoraskar ,  Srinivas Bangalore Seshadri ,  Tao Wang ,  Si Chen

IPC: H03F3/45

CPC classification number: H03F3/45475 ,  H03F2200/165 ,  H03F2200/171

Abstract: A high input impedance switched capacitor amplifier is disclosed. The switched capacitor amplifier includes at least a first buffer circuit configured to charge a first plurality of capacitors during a first time period. A switch circuit is configured to, during a second time period, cause a modification of an amount of charge stored on one of the first plurality of capacitors by coupling an input signal directly to the one of first plurality of capacitors. An amplifier circuit is configured to, based on a sampling voltage present on one of the first plurality of capacitors, generate an output signal.