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2012•Procedia EngineeringOpen access

Design of High-Speed and Low-Power Comparator in Flash ADC

Shaozhen Zhang, Zheying Li, Bo Ling

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Abstract

In this paper, a high-speed low-power comparator, which is used in a 2 Gsps, 8 bit Flash ADC, is designed and simulated. Based on 0.18 um TSMC CMOS process model, the comparator circuit is simulated with a 1.8 V power supply in Cadence environment. The result shows that it can work at a 2GHZ clock frequency, and the dynamic power consumption is only 1.2mW, with 123.5ps transmission delay. In addition, the average offset voltage of this comparator is only 676.3uV, which can meet the requirements of an 8-bit Flash ADC.

About this research paper

What this paper is about

In this paper, a high-speed low-power comparator, which is used in a 2 Gsps, 8 bit Flash ADC, is designed and simulated. Based on 0.18 um TSMC CMOS process model, the comparator circuit is simulated with a 1.8 V power supply in Cadence environment. The result shows that it can work at a 2GHZ clock frequency, and the dynamic power consumption is only 1.2mW, with 123.5ps transmission delay. In addition, the average offset voltage of this comparator is only 676.3uV, which can meet the requirements of an 8-bit Flash ADC.

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OpenAlex reports 10 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

In this paper, a high-speed low-power comparator, which is used in a 2 Gsps, 8 bit Flash ADC, is designed and simulated. Based on 0.18 um TSMC CMOS process model, the comparator circuit is simulated with a 1.8 V power supply in Cadence environment. The result shows that it can work at a 2GHZ clock frequency, and the dynamic power consumption is only 1.2mW, with 123.5ps transmission delay. In addition, the average offset voltage of this comparator is only 676.3uV, which can meet the requirements of an 8-bit Flash ADC.

Key concepts: Comparator, Flash ADC, Flash (photography), Comparator applications, Power (physics), Electrical engineering, Computer science, Engineering

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