Publication Details
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Annachiara Spagnolo, Bob Verbruggen, Stefano D'Amico, Piet Wambacq
 

Chapter in Book/ Report/ Conference proceeding

Abstract 

A 7b time interleaved hybrid ADC in 40nm CMOS is presented. The ADC consists of two pipelined stages and combines an intrinsically linear SAR with a fully calibrated binary search architecture to achieve energy efficiency. The first stage of each channel consists of a 3b SAR followed by a dynamic amplifier merged with a comparator. The second stage is a 3b comparator-based asynchronous binary search with threshold calibration to compensate amplifier nonlinearity. The calibration references are generated on chip by using the DAC embedded in the first stage. The prototype achieves a peak SNDR of 38dB at 3.5GS/s while consuming approximately 6.2mW.

Reference 
 
 
DOI