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Improvement of Active-Input Current Mirrors Using Adaptive Biasing Technique

Mohan Julien 1 Serge Bernard 1 Fabien Soulier 1 Vincent Kerzérho 1 Guy Cathébras 1
1 SmartIES - Smart Integrated Electronic Systems
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
Abstract : Dynamic CMOS current mirrors are used in a large variety of circuits as fundamental elements of analog design. Several topologies have been proposed over the years to improve their performances. Among these solutions, the active-input technique is intended to increase speed-power ratio and input compliance. However, it has been proven that this structure suffers from a restricted input-current dynamic. In this paper, we propose an enhancement of the active-input structure relying on adaptive biasing to overcome the input current range limitation at low cost in terms of power consumption, noise and silicon area. Theoretical analysis demonstrates the efficiency of the proposed enhancement. Then, an example circuit realized in AMS CMOS 0.18 μm technology at 1.8 V supply is validated by simulation results.
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-02287704
Contributor : Fabien Soulier <>
Submitted on : Friday, September 13, 2019 - 5:14:54 PM
Last modification on : Tuesday, June 8, 2021 - 11:08:02 AM

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Mohan Julien, Serge Bernard, Fabien Soulier, Vincent Kerzérho, Guy Cathébras. Improvement of Active-Input Current Mirrors Using Adaptive Biasing Technique. 33rd International Conference on Design of Circuits and Integrated Systems (DCIS 2018), Nov 2018, Lyon, France. ⟨10.1109/DCIS.2018.8681474⟩. ⟨lirmm-02287704⟩

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