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A Range Pre-selection Sampling (RPS) technique is introduced to reduce the input drive energy for SAR ADCs and is applied to a 10-bit 2MS/s SAR ADC in 65nm CMOS in this paper. Using the proposed RPS technique, the peak input sampling current and hence the input drive power requirement is reduced by a factor 2.4 as compared to conventional sampling (CS). Considering an ideal Class A operation for the...
A dynamic bias pre-amplifier based latch type comparator is designed in a 65nm CMOS process. Its performance is compared with the double-tail latch-type comparator fabricated on the same chip in terms of energy consumption, input referred noise and speed. Measurements demonstrate that the proposed dynamic bias pre-amplifier based comparator consumes 2.8 times less energy per comparator operation with...
A 10-bit 1MS/s SAR ADC in 65nm CMOS is presented that introduces an Energy-Reduced-Sampling (ERS) technique to reduce the input drive energy for Nyquist rate ADCs. Our ADC occupies an area of 0.048 mm2, and achieves an SFDR of 67 dB, an SNDR of 56 dB at up-to 1MS/s and 3.2μW power consumption, yielding a Walden Figure of Merit, FoMw of 5.9fJ/conversion-step. Using ERS, the peak sampling current and...
A clock and data recovery (CDR) module in 90nm CMOS, for a 10Gbps serial link, integrated with a −18dB attenuation channel, is presented. A novel dual-loop CDR with separate charge pumps for high-gain frequency acquisition, and low-gain phase tracking has been introduced. The CDR utilizes a full rate architecture with a single VCO along with a selection logic for switching to the desired charge pump,...
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