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With the rising importance of energy efficiency, zero leakage power and instant-on capability are highly desired features in energy harvesting sensors, as well as “normally off” high performance processors. However, intermittent power in such systems requires nonvolatile memory (NVM) to hold intermediate data and avoid rollbacks. Previous work has adopted FeRAM and STT-MRAM to achieve zero-standby...
In this paper, a 6-bit 320-MS/s successive approximation register analog-to-digital converter (SAR ADC) is presented. The 2-bit/cycle technique and tri-level based charge redistribution technique are utilized to achieve high conversion rate and reduce the hardware cost. The proposed ADC is designed and implemented in a 65-nm CMOS process. Simulation results show that it accomplishes 48.52-dB SFDR,...
Multi-stage latency adders based on different prediction schemes have been proved promising to enhance the circuit performance with negligible overhead. This paper presents a novel predictor exploiting both the detection and the sequence-dependence between the successive calculations. The detection of carry-kill pattern of the input data can lower the probability of the operation with multiple clock...
A 14 bit 500 MS/s current-steering digital-to-analog converter (DAC) was designed and fabricated in 0.13 CMOS process. For traditional wide-band current-steering DACs, the spurious-free dynamic range (SFDR) is limited by nonlinear distortions from the code-dependent load variations and the code-dependent switching glitches. They are analyzed in this paper and mitigated by the proposed complementary...
The paper introduced the mathematical model in both time and frequency domain of parallel/interleaved sampling system, the total gain error, phase shift error, aperture jitter error of multi-channel sampling scheme are all involved. The critical layout techniques of a hi-speed and hi-resolution analog-to-digital conversion circuit are also provided. At last, a 4-channel interleaved sampling clock...
This paper describes a 10-bit 40 MS/s low power pipelined analog-to-digital converter (ADC). A novel pre-charged fast power-on switched operational amplifier is used to lower power consumption of the pipelined ADC to 13.82 mW. The ADC is designed in a 1.8 V 1P6M 0.18-mum CMOS process. Simulation results indicate that the ADC exhibits Spurious Free Dynamic Range (SFDR) of 74.19 dB and Signal to Noise...
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