Digital OTAs: Conventional Designs Versus Emerging Concept

Digital OTAs: Conventional Designs Versus Emerging Concept | Research Square Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Help Center Sign In Submit a Preprint Cite Share Download PDF Short Report Digital OTAs: Conventional Designs Versus Emerging Concept Meysam Akbari, Erika Covi, Paolo Gibertini This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8909290/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract This brief presents two novel fully digital operational transconductance amplifier (OTA) architectures for low-voltage CMOS technologies. The first design is a fully differential OTA that replaces conventional inverter-based gain stages with Müller C-elements, exploiting their regenerative and state-retentive properties to enhance effective voltage gain without DC biasing or analog support circuitry. The second introduces an emerging concept in which a latch-based comparator is reinterpreted as a continuous-time OTA through controlled charge transfer to an output capacitor using predominantly standard digital cells. Both approaches eliminate traditional analog biasing while preserving rail-to-rail operation and zero static power in steady state. A comparative analysis highlights their operating principles and scalability for digitally intensive mixed-signal systems. Electrical Engineering Digital OTA Inverter C-element Static power Rail-to-rail Latch Standard cell Full Text Additional Declarations The authors declare no competing interests. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information

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