A Pulse Width Modulator Using a High-Speed Comparator With Flexible Oxide TFT Technology
IEEE Solid-State Circuits Letters(2022)
Abstract
This letter presents a pulse-width modulator (PWM) using a novel high-speed comparator, whose duty cycle changes with respect to the variation in the input reference voltage. This circuit has shown a variation of 44% in the duty cycle of a PWM wave for an input reference voltage variation of 2 V from measurements. This circuit is showing an input referred offset voltage of 40 mV, an input rms noise voltage of 4 mV and a power consumption of 56 mu W . Further, the circuit is able to discriminate a minimum differential input voltage of 40 mV. The reliable operation was demonstrated with a maximum input signal frequency of 10 kHz and a clock frequency of up to 1 MHz at a supply voltage of 4 V under normal ambient conditions. This circuit was fabricated on a flexible 30- mu m thick polyamide substrate using an a-IGZO TFT technology.
MoreTranslated text
Key words
Comparator,flexible electronics,oxide TFT,pulse-width modulator (PWM) modulator
AI Read Science
Must-Reading Tree
Example
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined