Abstract
In this work, we propose a highly efficient two-stage CMOS amplifier that is based on an improved recycling folded cascode design. The circuit was simulated using TSMC 0.18 μm and HSPICE circuit simulator at a voltage of 1.8 V. The first stage of the circuit utilizes a supper recycling folded cascode design, while the second stage employs a simple cascode amplifier. Additionally, we have utilized a small 1 pF Miller capacitor to stabilize the amplifier response. Based on simulation results, the proposed amplifier demonstrates a DC gain of 110 dB, GBW of 15 MHz, and power consumption of 359 μW. Finally, we conducted Monte Carlo simulations to verify the robustness of the proposed circuit against the process, temperature, supply voltage, and device dimension mismatch variations.
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