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首页> 外文期刊>IEEE Journal of Solid-State Circuits >1.2-V CMOS op-amp with a dynamically biased output stage
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1.2-V CMOS op-amp with a dynamically biased output stage

机译:具有动态偏置输出级的1.2V CMOS运算放大器

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摘要

A very low-voltage operational amplifier in a standard CMOSnprocess with a 0.75 V threshold voltage is presented. It uses a novelndynamically biased output stage based on the switched-capacitornapproach. Thanks to this, drive performance is greatly improved andnaccurate current control is also achieved. The amplifier is capable ofnworking with a power supply as low as 1.2 V while providing a -74 dBntotal harmonic distortion with a 700 mV peak-to-peak output voltage intona 500 Ω and 20 pF output load. The open-loop gain and thengain-bandwidth product are higher than 90 dB and 2.2 MHz, respectively
机译:提出了标准CMOSn工艺中具有0.75 V阈值电压的超低压运算放大器。它使用基于开关电容方法的新型动态偏置输出级。因此,驱动性能大大提高,并且还实现了不正确的电流控制。该放大器能够在低至1.2 V的电源上工作,同时提供-74 dBn的总谐波失真以及700 mV的峰峰值输出电压到500Ω和20 pF的输出负载。开环增益和增益带宽乘积分别高于90 dB和2.2 MHz

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