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- W2149457067 abstract "Low-noise, low-dropout (LN-LDO) regulators are critical for supply regulation of deep-submicron analog baseband and RF system-on-chip designs. A low 1/f noise LDO regulator utilizing a chopper stabilized error amplifier is presented. In order to achieve fast response during load transients, a current-mode feedback amplifier (CFA) with an asymmetrical input pair is designed as a second stage. With chopping frequencies up to 1MHz, an output noise spectral density of 32nV/radicHz and PSR of 38dB is achieved at 100kHz. Compared to an equivalent noise density static regulator, the error amplifier silicon area is reduced by 75%. With the current-mode feedback second stage buffer, settling time is reduced by 60% in comparison to an equivalent power consumption voltage mode buffer, achieving 0.6musec settling time for a 50mA load step. The LN-LDO is designed and fabricated on a 0.25 mum CMOS process with five layers of metal, occupying 0.88mm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup>" @default.
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- W2149457067 date "2006-09-01" @default.
- W2149457067 modified "2023-10-18" @default.
- W2149457067 title "A Low 1/f Noise CMOS Low-Dropout Regulator with Current-Mode Feedback Buffer Amplifier" @default.
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- W2149457067 doi "https://doi.org/10.1109/cicc.2006.320913" @default.
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