發明
美國
14/175,279
US 9,118,338 B2
偏移補償電路及其補償方法 OFFSET COMPENSATION CIRCUIT AND METHOD THEREOF
財團法人國家實驗研究院
2015/08/25
一種電流導引式偏移補償電路用以校正一訊號處理器之差動誤差,該訊號處理器具有一對差動輸入端和一對差動輸出端,以及該電流導引式偏移補償電路包含一導引電路,與該訊號處理器連接;一數位控制器,根據該訊號處理器之該對差動輸出端的值,產生一數位控制訊號;一數位類比轉換電路,接收該數位控制訊號,並輸出一控制電壓,其中該導引電路接收該控制電壓,據以輸出一校正電流。 A current-steering offset compensation circuit for correcting the differential error signals of a signal processor. The signal processor includes a pair of differential input terminals and a pair of differential output terminals and the current-steering offset compensation circuit includes a current-steering circuit which is connected with the signal processor, a digital control unit which according to the differential error signals of the signal processor, generates a digital control signal, and a digital to analog converter which receives the digital control signal and outputs a control voltage, wherein the current-steering circuit receives the control voltage and then outputs a correction current.
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