Advancement of CMOS Schmitt Trigger Circuits

  •  Wassan Kader    
  •  Haroon Rashid    
  •  Md. Mamun    
  •  Mohammad Arif Sobhan Bhuiyan    


Schmitt triggers are electronic comparators that are widely used to enhance the immunity of circuits to noise and disturbances and are inherent components of various emerging applications. Conventional Schmitt triggers, composed of operational amplifiers, suffer from some inevitable drawbacks which are not prominent in CMOS Schmitt triggers. In this paper, a review on the advancement of Schmitt trigger circuits are illustrated in different literatures is discussed with their merits and demerits.

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