Article
An Enhanced Gain-Bandwidth Class-AB Miller op-amp with 23,800 MHz·pF/mW FOM, 11-16 Current Efficiency and Wide Range of Resistive and Capacitive Loads Driving Capability
Author/s | Anindita, Paul
Ramírez Angulo, Jaime Díaz Sánchez, Alejandro López Martín, Antonio J. González Carvajal, Ramón X. Li, Frank |
Department | Universidad de Sevilla. Departamento de Ingeniería Electrónica |
Publication Date | 2021 |
Deposit Date | 2021-09-01 |
Published in |
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Abstract | A compact power-efficient class-AB Miller op-amp is introduced. It uses a simple auxiliary
circuit that enhances the op-amp’s gain-bandwidth product and helps to drive a wide range of capacitive and
resistive loads with ... A compact power-efficient class-AB Miller op-amp is introduced. It uses a simple auxiliary circuit that enhances the op-amp’s gain-bandwidth product and helps to drive a wide range of capacitive and resistive loads with high static and dynamic current efficiency. Simple Miller compensation is used to obtain stability over a wide range of loading conditions. The op-amp’s simulation and experimental results in strong inversion with 15µA bias current and in sub-threshold with 250nA bias current are shown. Its performance is measured in terms of dynamic and static current efficiency figures of merit FOMCEDyn and FOMCEStat. and using the conventional small-signal figure of merit FOMSS. Experimental results of op-amps fabricated in a 130nm CMOS technology are shown that validate the proposed approach. |
Project ID. | TEC2016-80396-C2
P18-FR-4317 A1-S-43214 |
Citation | Anindita, P., Ramírez Angulo, J., Díaz Sánchez, A., López Martín, A.J., González Carvajal, R. y X. Li, F. (2021). An Enhanced Gain-Bandwidth Class-AB Miller op-amp with 23,800 MHz·pF/mW FOM, 11-16 Current Efficiency and Wide Range of Resistive and Capacitive Loads Driving Capability. IEEE Access, 9, 69783-69797. |
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