High Slew Rate, Low Power Operational Amplifier Using Capacitance Multiplier Compensation and Slew Rate Boost Circuit

カテゴリ: 部門大会

論文No: SS4-10

グループ名: 【C】平成28年電気学会電子・情報・システム部門大会講演論文集

発行日: 2016/08/31

タイトル(英語): High Slew Rate, Low Power Operational Amplifier Using Capacitance Multiplier Compensation and Slew Rate Boost Circuit

著者名: Liu Xinwei(東京工業大学),Sato Hiroki(東京工業大学),Takagi Shigetaka(東京工業大学)

著者名(英語): Xinwei Liu|Hiroki Sato|Shigetaka Takagi

キーワード: slew rate|low power consumption|capacitance multiplier compensation

要約(日本語): High slew rate, low power operational amplifiers (Op-amps) are bottlenecks of today’s battery-powered equipment, due to the limited tail current and stability. To overcome this problem, this paper presents a novel slew rate boost scheme. It can gather extra tail current by slew rate boost circuit and decrease the value of compensation capacitor by using capacitance multiplier compensation when output voltage is slewing. Cadence Spectre simulation shows that this op-amp has a slew rate of 105 V/?s, consuming 0.68mW.

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