Low Voltage Class AB Output Stage for CMOS Op-Amps Using Multiple Input Floating Gate Transistors |
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| Authors: | R.G. Carvajal A. Torralba J. Tombs F. Muñoz J. Ramírez-Angulo |
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| Affiliation: | (1) Dpto. de Ing. Electrónica, Escuela Superior de Ingenieros, Universidad de Sevilla, Sevilla, Spain;(2) Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM |
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| Abstract: | A new class AB output stage for CMOS op-amps is proposed with simple and accurate quiescent current control using floating gate transistors. The proposed stage can be operated with a supply voltage close to a transistor's threshold voltage. Experimental results are provided showing a 15 MHz gain-bandwidth product when it is used as the second stage of an op-amp with 1.5 V supply voltage in a standard 0.8  m CMOS technology. |
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| Keywords: | low-voltage operational amplifiers floating-gate transistors |
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