Nanometer CMOS Technology

Goll, Bernhard; Zimmermann, Horst

doi:10.1007/978-3-662-44482-5_4

Cited by 1 publication

(1 citation statement)

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“…The positive feedback can be controlled internally or externally according to the intended application and noise tolerance [11,12]. It is worth noting that since different threshold levels can cause different outputs, the hysteresis characteristic might not be desirable in some applications, such as ADC converters [13].…”

Section: Introductionmentioning

confidence: 99%

A Sub-Threshold Differential CMOS Schmitt Trigger with Adjustable Hysteresis Based on Body Bias Technique

et al. 2020

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This paper presents a sub-threshold differential CMOS Schmitt trigger with tunable hysteresis, which can be used to enhance the noise immunity of low-power electronic systems. By exploiting the body bias technique to the positive feedback transistors, the hysteresis of the proposed Schmitt trigger is generated, and it can be adjusted by the applied bias voltage to the bulk terminal of the utilized PMOS transistors. The principle of operation and the main formulas of the proposed circuit are discussed. The circuit is designed in a 0.18-μm standard CMOS process with a 0.6 V power supply. Post-layout simulation results show that the hysteresis width of the Schmitt trigger can be adjusted from 45.5 mV to 162 mV where the ratio of the hysteresis width variation to supply voltage is 19.4%. This circuit consumes 10.52 × 7.91 μm2 of silicon area, and its power consumption is only 1.38 µW, which makes it a suitable candidate for low-power applications such as portable electronic, biomedical, and bio-implantable systems.

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Section: Introductionmentioning

confidence: 99%