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چکیده
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By using Gm-C compensation (GCC) technique, a two-stage recycling folded cascode (FC) operational transconductance amplifier (OTA) is designed. The proposed configuration consists of recycling structure, positive feedback, and feed-forward compensation path. In comparison with the typical folded cascode CMOS Miller amplifier, this design has higher DC gain, unity gain frequency (UGF), slew rate and common mode rejection ratio (CMRR). The presented OTA is simulated in 0.18-_m CMOS technology and the simulation results confirm the theoretical analyses. Finally, the proposed amplifier has a 111 dB open-loop DC gain, 20MHz UGF and 145 dB CMRR @ 1.2V supply voltage while the power consumption is 400 uW which makes it suitable for low-voltage applications.
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