CMOS adjustable Schmitt triggers

Wang, Z.

doi:10.1109/19.87026

Cited by 64 publications

(27 citation statements)

References 4 publications

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“…Steyaert and Sansen [7] proposed a lowvoltage Schmitt trigger with only two transistors stacked between power and ground rails. Although only one triggering voltage was implemented, Steyaert-Sansen's design can readily be extended to two triggering voltages, as demonstrated in [8]. The Schmitt trigger proposed by Kim et al [9] uses 10 transistors to form the needed regenerative feedback.…”

Section: Introductionmentioning

confidence: 99%

Differential CMOS Schmitt trigger with tunable hysteresis

Yuan

2009

Analog Integr Circ Sig Process

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This letter presents a new differential Schmitt trigger with tunable hysteresis. The hysteresis is generated using a cross-coupled inverter pair. The amount of hysteresis can be adjusted by varying the current of the symmetrical load. The proposed Schmitt trigger has been designed in TSMC-0.18 lm 1.8 V CMOS technology and analyzed using Spectre from Cadence Design Systems with BSIM3V3 device models. Simulation results demonstrate that the triggering voltage of the Schmitt trigger can be adjusted from 0.95 to 1.35 V approximately.

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Section: Introductionmentioning

confidence: 99%

Differential CMOS Schmitt trigger with tunable hysteresis

Yuan

2009

Analog Integr Circ Sig Process

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“…Another kind of commonly used Schmitt trigger and its modification are based on simple inverter-comparator, as reported in [5,6,7,8,9]. They operate with little static current and some could adjust the hysteresis voltages by pre-setting a DC bias voltage.…”

Section: Introductionmentioning

confidence: 99%

“…1a) is one of the most effective approaches to realize the voltage comparator for converting the input analog signal to digital signal [5]. Despite the fact that the gain and slew rate is not limited by a bias current and that it provides the maximum possible charging and discharging current for a given supply voltage, it suffers unpredictable inherent threshold voltage caused by PVT variations [10], as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…So, the inverter-comparator in the main-function circuit obtains the same inherent threshold as the one in the self-tuning circuit, which constantly equals to 1/2 V DD against PVT variations and achieves the best noise margin [11]. However, this circuit lacks the hysteresis and adjustable threshold voltages, which are crucial to reduce the sensitivity to noise and disturbances in sensing nodes of body area network [5].…”

Section: Introductionmentioning

confidence: 99%

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A PVT-independent Schmitt trigger with fully adjustable hysteresis threshold voltages for low-power 1-bit digitization applications

Lin

Wang

Zhang

et al. 2016

IEICE Electron. Express

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This paper proposes a process, voltage, temperature (PVT) independent Schmitt trigger with fully adjustable hysteresis threshold voltages. These characteristics are attributed to the proposition of a self-tuning circuit in the inverter-comparator, along with a feedback controlling network for hysteresis characteristic. The proposed Schmitt trigger is designed and fabricated with SMIC 0.13 µm CMOS technology. It has much less power consumption of only 2.51 µW, and features also an adjustable hysteresis threshold voltages ranging from 350 mV to 850 mV at a minimum supply voltage of 1.0 V. All these advantages make it very suitable to work as 1-bit digitization in a low power sensing node.

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“…Actually it is a bistable multivibrator circuit which converts a varying voltage into an unvarying logical voltage signal (zero or one). Numerous design and implementation of Schmitt trigger circuits for different applications and advantages has been proposed in literatures by many researchers (Lotze & Manoli, 2012;Saini, Veeramachaneni, Kumar, & Srinivas, 2009;Kulkarni, Kim, & Roy, 2007;Wu & Chiang, 2004;Morimura et al, 2004;Kim, Kim, & Chung, 2007;Dokic, 1984;Dokic & Bundalo, 1985;Wang, 1991;Kim, Joongsik, & Kim, 1993;Dokic, 1996;Zhang, Srivastava, & Ajmera, 2003;Franco, 1988;Dokic, 1984;Azeemuddin & Sayeh, 2011;Chen & Ker, 2005;Kuang & Chuang, 2001;Stayaert & Sansen, 1986;Singhanat et al, 2011;Ahdal & Toumazou, 2012). This paper presents a detail review on the merits and demerits of each circuit from its architecture and performance point of view illustrated in literatures for last two decades.…”

Section: Introductionmentioning

confidence: 99%

Advancement of CMOS Schmitt Trigger Circuits

Kader¹,

Rashid²,

Mamun³

et al. 2012

MAS

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Schmitt triggers are electronic comparators that are widely used to enhance the immunity of circuits to noise and disturbances and are inherent components of various emerging applications. Conventional Schmitt triggers, composed of operational amplifiers, suffer from some inevitable drawbacks which are not prominent in CMOS Schmitt triggers. In this paper, a review on the advancement of Schmitt trigger circuits are illustrated in different literatures is discussed with their merits and demerits.

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CMOS adjustable Schmitt triggers

Cited by 64 publications

References 4 publications

Differential CMOS Schmitt trigger with tunable hysteresis

Differential CMOS Schmitt trigger with tunable hysteresis

A PVT-independent Schmitt trigger with fully adjustable hysteresis threshold voltages for low-power 1-bit digitization applications

Advancement of CMOS Schmitt Trigger Circuits

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