Mixed-Signal Building Blocks for Communication Systems Using Flexible Oxide TFT Technology

Bhawna Tiwari, Pydi Ganga Bahubalindruni, Suyash Shrivastava, João Carlos da Palma Goes

Research output: Contribution to journalArticlepeer-review


This article reports two important mixed-signal building blocks using unipolar oxide thin-film transistors (TFTs) on a 30- μm -thick polymide substrate, which find potential application in communication systems. These blocks include a low-voltage bootstrapped (BS) switch and a latch-type comparator designed using a device channel length of 2 μm . Functional demonstration of these blocks has been carried out from measurements under normal ambient conditions with a load of 10 MΩ||12 pF at a supply voltage ( VDD ) not exceeding 3 V. While the BS switch shows a linear ON-resistance of 40 kΩ , at a VDD of 2 V, without any voltage drop across it, the proposed comparator has shown a very low offset of 10 mV with a decision time of 4 μs . These blocks help in expanding the application of oxide TFT technology in communication systems to design the binary amplitude-shift keying (BASK) modulator and demodulator circuits.
Original languageEnglish
Number of pages8
JournalIEEE Journal on Flexible Electronics
Issue number4
Publication statusPublished - Oct 2022


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