Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2002.07a
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- Pages.337-340
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- 2002
A Phase Compensation for a Low Power Operational Trans-Conductance Amplifier
- Yamauchi, Tsutomu (Faculty of Engineering, Yamagata University) ;
- Takahashi, Kazukiyo (Faculty of Engineering, Yamagata University) ;
- Yokoyama, Michio (Faculty of Engineering, Yamagata University) ;
- Shouno, Kazuhiro (Faculty of Engineering, Yamagata University) ;
- Mizunuma, Mitsuru (Faculty of Engineering, Yamagata University)
- Published : 2002.07.01
Abstract
This paper describes a phase compensation technique for the low power consumption OTA. Power consumption of the low power OTA is lower than that of the conventional Wang's OTA. However. this circuit has an oscillation problem. The phase margin is -24deg. By using the phase compensation capacitor, the phase margin becomes 52deg. As a result, the low power consumption OTA circuit becomes to have an enough phase margin and to operate stably.
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