Invention Grant
US08681029B1 Chopper-stabilization method and apparatus for sigma delta modulators
有权
用于Σ-Δ调制器的斩波稳定方法和装置
- Patent Title: Chopper-stabilization method and apparatus for sigma delta modulators
- Patent Title (中): 用于Σ-Δ调制器的斩波稳定方法和装置
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Application No.: US13624802Application Date: 2012-09-21
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Publication No.: US08681029B1Publication Date: 2014-03-25
- Inventor: Stanley Bo-Ting Wang , Derek K. Shaeffer
- Applicant: Invensense, Inc.
- Applicant Address: US CA San Jose
- Assignee: Invensense, Inc.
- Current Assignee: Invensense, Inc.
- Current Assignee Address: US CA San Jose
- Agency: IPXLAW Group LLP
- Agent Maryam Imam
- Main IPC: H03M3/00
- IPC: H03M3/00
Abstract:
An embodiment of the invention includes an analog to digital converter including a sigma delta modulator that generates a feedback signal. The sigma delta modulator includes a quantizer responsive to an input signal and the feedback signal and generates a quantizer output. The sigma delta modulator further includes a chopper-stabilized amplifier that provides a reference signal to the sigma delta modulator, and the chopper-stabilized amplifier is stabilized according to a combination of a chopping signal and the quantizer output.
Public/Granted literature
- US20140085120A1 CHOPPER-STABILIZATION METHOD AND APPARATUS FOR SIGMA DELTA MODULATORS Public/Granted day:2014-03-27
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