Title :
A CMOS Low-Noise, Low-Dropout Regulator for Transceiver SOC Supply Management
Author :
Oh, Wonseok ; Bakkaloglu, Bertan ; Aravind, Bhaskar ; Hoon, Siew Kuok
Author_Institution :
Dept. of Electr. Eng. Tempe, Arizona State Univ, Tempe, AZ
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 introduced. A secondary amplifier with supply ripple subtraction stage is used for PSR improvement. With the proposed techniques, less than 180 nV/radicHz output noise spectral density and 50 dB of PSR is measured at 10 kHz frequency. With chopping frequencies up to 1MHz, the regulator achieves 5 mV/25 mA load regulation at 100 muA quiescent current. The LN-LDO is designed and fabricated on a 0.25mum, digital CMOS process with five level metal occupying 0.54 mm2.
Keywords :
1/f noise; CMOS integrated circuits; amplifiers; system-on-chip; telecommunication power supplies; transceivers; 1/f noise; CMOS; SOC; chopper stabilized error amplifier; chopping frequencies; current 100 muA; frequency 10 kHz; low dropout regulator; low noise; quiescent current; size 0.25 mum; supply management; transceiver; Baseband; Choppers; Density measurement; Frequency measurement; Low-noise amplifiers; Radio frequency; Radiofrequency amplifiers; Regulators; System-on-a-chip; Transceivers;
Conference_Titel :
SOC Conference, 2006 IEEE International
Conference_Location :
Taipei
Print_ISBN :
0-7803-9781-9
Electronic_ISBN :
0-7803-9782-7
DOI :
10.1109/SOCC.2006.283832
