Invention Application
US20140070971A1 TRACK-AND-HOLD CIRCUIT FOR ANALOG-TO-DIGITAL CONVERTER WITH SWITCHED CAPACITOR COUPLING OF AMPLIFIER STAGE
有权
具有开关电容耦合放大器级的模拟数字转换器的跟踪保持电路
- Patent Title: TRACK-AND-HOLD CIRCUIT FOR ANALOG-TO-DIGITAL CONVERTER WITH SWITCHED CAPACITOR COUPLING OF AMPLIFIER STAGE
- Patent Title (中): 具有开关电容耦合放大器级的模拟数字转换器的跟踪保持电路
-
Application No.: US13607073Application Date: 2012-09-07
-
Publication No.: US20140070971A1Publication Date: 2014-03-13
- Inventor: Oleksiy Zabroda
- Applicant: Oleksiy Zabroda
- Applicant Address: US CA Milpitas
- Assignee: LSI Corporation
- Current Assignee: LSI Corporation
- Current Assignee Address: US CA Milpitas
- Main IPC: G11C27/02
- IPC: G11C27/02 ; H03M1/12
Abstract:
A track-and-hold circuit comprises at least first and second amplifier stages, and switched capacitor circuitry coupled between the first and second amplifier stages. In a track mode of operation of the track-and-hold circuit, the switched capacitor circuitry is configured to decouple inputs of the second amplifier stage from respective outputs of the first amplifier stage and to couple the inputs of the second amplifier stage to a common mode voltage via respective first and second capacitors. In a hold mode of operation of the track-and-hold circuit, the switched capacitor circuitry is configured to couple the inputs of the second amplifier stage to the respective outputs of the first amplifier stage via the respective first and second capacitors. Multiple instances of the track-and-hold circuit may be implemented in parallel in a time-interleaved analog-to-digital converter.
Public/Granted literature
- US08704691B2 Track-and-hold circuit for analog-to-digital converter with switched capacitor coupling of amplifier stage Public/Granted day:2014-04-22
Information query
