用於光纖陀螺儀之數位類比轉換器

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

17/084,863

專利證號

US 11,196,440 B1

專利獲證名稱

用於光纖陀螺儀之數位類比轉換器

專利所屬機關 (申請機關)

國立中山大學

獲證日期

2021/12/07

技術說明

一種數位類比轉換器，用以解決習知數位類比轉換器的製程漂移而導致電流源誤差的問題。係包含：一隨機單元，產生一亂數訊號；數個編碼單元，耦合連接該隨機單元，各該編碼單元依據該亂數訊號將數個數位訊號轉換為數個旋轉訊號；數個控制單元，一對一耦合連接該數個編碼單元，各該控制單元將該數個旋轉訊號轉換為數個邏輯訊號；一電流源陣列，耦合連接該數個控制單元，該電流源陣列依據該數個邏輯訊號產生一總電流；及一輸出負載，電性連接該電流源陣列，該總電流通過該輸出負載，在該輸出負載的兩端形成一類比電壓訊號。 A digital to analog converter is provided to solve the problem of the current source error caused by manufacturing drift of the conventional digital to analog converter. The digital to analog converter comprises a random unit, a plurality of coder units coupled with the random unit, a plurality of control units one to one coupled with the plurality of coder units, a current source array coupled with the plurality of control units, and an output load electrically connected to the current source array. The random unit generates a random signal. Each of the plurality of coder units converts a plurality of digital signals to a plurality of spin signals according to the random signal. Each of the plurality of control units converts the plurality of spin signals to a plurality of logic signals. The current source array generates a total current according to the plurality of logic signals. The total current passes through the output load. An analog voltage signal is formed at both ends of the output load.

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