Design of programmable gain amplifier based on digitally controlled potentiometer 可編程微電流放大電路的設計
Bias control potentiometer 偏壓調整電位計
( 2 ) the digital main experiment board is designed , in this scheme , the analog multiplexers are taken as the nodes selectors to construct the 16 nodes structure of the experiment board . the connection of the nodes of devices can be digitally set . the dcp ( digital control potentiometer ) is selected as the resistor library component , the capacitances and the inductances with the different parameters respective are selected as the capacitance library components and the inductance library components , the parameters of components are set with the analog multiplexers ( 2 )研制了全數字化實驗主板,本方案選擇模擬電子開關組成16選1的節點選擇器,構成了16節點的通用實驗主板,可數字化設置實驗主板上的元件節點的連接,選取數字式電阻作為實驗電阻的元件庫,選取不同參數值的電容和電感組成電感元件庫和電容元件庫,由模擬電子開關對電容和電感元件參數作數字化選擇。