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APPARATUS AND METHOD FOR TRACKING AND CANCELLING DC OFFSET TO ACQUIRE SMALL AC SIGNAL
专利权人:
Craig P. Finlinson;Mohammad U. Abbasi;Mark S. Mudd;Nicholas P. Cowley
发明人:
Craig P. Finlinson,Mohammad U. Abbasi,Nicholas P. Cowley,Mark S. Mudd
申请号:
US14752881
公开号:
US20160374574A1
申请日:
2015.06.27
申请国别(地区):
US
年份:
2016
代理人:
摘要:
Described is an apparatus which comprises: a source to generate a first current having AC and DC components; a current-to-voltage converter to convert the first current or a copy of the first current to a first voltage proportional to a resistance, the first voltage having AC and DC components that correspond to the AC and DC components of the first current; a sample-and-hold circuit to filter the AC component from the first voltage and for providing an output voltage with the DC component; and an amplifier to receive the output voltage.
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