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Article
High current efficiency classAB OTA with high open loop gain and enhanced bandwidth
Author/s | Pourashraf, Shirin
Ramírez Angulo, Jaime Román Loera, Alejandro López Martín, Antonio J. Díaz Sánchez, Alejandro González Carvajal, Ramón |
Department | Universidad de Sevilla. Departamento de Ingeniería Electrónica |
Publication Date | 2017 |
Deposit Date | 2023-01-20 |
Published in |
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Abstract | An efficient class-AB OTA with enhanced output current, slew
rate, open loop gain, and gain bandwidth is presented. The circuit is based on
a class-AB input stage with adaptive biasing, and an output stage with
dynamically ... An efficient class-AB OTA with enhanced output current, slew rate, open loop gain, and gain bandwidth is presented. The circuit is based on a class-AB input stage with adaptive biasing, and an output stage with dynamically biased cascode transistors. It can deliver output currents 100 times larger than the bias current with a total quiescent power dissipation of 72 µW. Measurement results of a 180 nm CMOS test chip prototype show slew rate, gain bandwidth, and open loop gain enhancement. |
Citation | Pourashraf, S., Ramírez Angulo, J., Román Loera, A., López Martín, A.J., Díaz Sánchez, A. y González Carvajal, R. (2017). High current efficiency classAB OTA with high open loop gain and enhanced bandwidth. IEICE Electronics Express,, 14 (17), 1-5. https://doi.org/10.1587/elex.14.20170719. |
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14_14.20170719.pdf | 2.321Mb | [PDF] | View/ | |