مشخصات پژوهش

عنوان	Improving power efficiency of a two-stage operational amplifier for biomedical applications
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	OTA, Weak inversion region, Recycling folded cascode, Feed-forward path, Composite transistor
چکیده	By using compensation technique with feedforward path, an improved folded cascode operational transconductance amplifier (OTA) that operates in weak inversion region is designed. The proposed configuration consists of composite transistors, recycling structure and feed-forward compensation path. In comparison with the typical folded cascode CMOS Miller amplifier, this design has higher DC gain, unity gain frequency and slew rate without adversely affecting the noise and offset performance. The presented OTA is simulated in 0.18 lm CMOS technology and the simulation results confirm the theoretical analyses. Finally, the proposed amplifier has a 104.5 dB open-loop DC gain and 69.4 kHz unity gain frequency @ 0.6 V supply voltage while the power consumption is 300 nW.
پژوهشگران	میثم اکبری (نفر اول)، امید هاشمی پور (نفر چهارم)، مسعود نظری (نفر دوم)، لیلا شریفی (نفر سوم)