Lecture 11: Flash ADC: Ref. subtraction; Dynamic premp; Offset calibration; offset as ref. for flash

This lecture recaps the basic implementation of a flash ADC. The need for a global track-and-hold and different ways to subtract the reference voltage from the input is discussed. Following this, techniques to suppress the effect of offset and metastability using a dynamic preamplifier is explained. The lecture concludes with a brief explanation on offset calibration and on using the offset in the comparators to generate the reference voltages needed in a flash ADC.

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Instructor: R. S. Ashwin Kumar ( https://home.iitk.ac.in/~ashwinrs )
MVLSI, EE, IIT Kanpur

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