Invention Grant
- Patent Title: Dynamic range enhancement for self-capacitance measurement
-
Application No.: US16040025Application Date: 2018-07-19
-
Publication No.: US10976796B2Publication Date: 2021-04-13
- Inventor: Rajesh Anantharaman , Ajay Taparia , Shunxi Wang
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Loza & Loza LLP
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041 ; G06F3/047 ; G06F1/32

Abstract:
Aspects of the disclosure are directed to self-capacitance measurement and cancellation. In accordance with one aspect, a self-capacitance cancellation circuit includes an input amplifier, wherein the input amplifier comprises a non-inverting input, an inverting input and an output; a coherent current source coupled to the inverting input; a feedback network coupled to the output; and a capacitance coupled to the inverting input.
Public/Granted literature
- US20190034002A1 DYNAMIC RANGE ENHANCEMENT FOR SELF-CAPACITANCE MEASUREMENT Public/Granted day:2019-01-31
Information query