2017/02/03 by Naveen Kadayinti, Dinesh Sharma, Kadayinti, Naveen +1
Computer Science · #FOS: Computer and information sciences #Hardware Architecture (cs.AR) #cs.AR
paper · pdf · doi:10.48550/arxiv.1702.01067
15 pages, 11 figures
arxiv created 2017/02/03 · arxiv updated 2017/02/06
A decision feedback circuit with integrated offset compensation is presented in this paper. The circuit is built around the sense amplifier comparator. The feedback loop is closed around the first stage of the comparator resulting in minimum loop latency. The feedback loop is implemented using a switched capacitor network that picks from one of pre-computed voltages to be fed back. The comparator's offset that is to be compensated for, is added in the same path. Hence, an extra offset correction input is not required. The circuit is used as a receiver for a 10 mm low swing interconnect implemented in UMC 130 nm CMOS technology. The circuit is tested at a frequency of 1 GHz and it consumes 145 μA from a 1.2V supply at this frequency.