描述

偏差(offseterror)是指保證輸出代碼為0時(shí)的理想輸入模擬量與實(shí)際輸入模擬量的偏差。計(jì)算方法：輸出第一個(gè)代碼發(fā)生變化時(shí)ADC的實(shí)際輸入模擬值減去1/2個(gè)最小有效位(LSB)大小再減去理想的0代碼輸入模擬值。

ADC的增益誤差(gainerror)是指滿量程輸入時(shí)輸出代碼的誤差。計(jì)算方法：滿量程輸出代碼加上11/2最小有效位(LSB)時(shí)輸入值與滿量程輸出代碼時(shí)輸入之間的差值，再加上偏差(offseterror)。

最小有效位(LSB)大小是通過(guò)測(cè)量最小的和最大的轉(zhuǎn)換點(diǎn)后計(jì)算得到的。理想情況下，模擬輸入變化一個(gè)LSB值，將引起輸出端變化一個(gè)代碼。

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