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لماذا عندما نشكل مكبر العمليات ( مضخم ) كمكبر ذو حلقة مغلقة فإن حساسيته و تأثره للحرارة ينخفض أو ينعدم فلا يعود يتأثر بالحرارة ؟
use op-amp amplifier with open loop because the main op-amp has a switched capacitor common mode feedback circuit. two fully differential folded-cascode op amps with continuous-time CMFBs are used as auxiliary op amps to increase the open-loop gain of the main op amp. Common mode feedback (CMFB) is used to stable the designed op-amp against temperature.
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