of the Thesis A Low Jitter PLL Using High PSRR Low-Dropout Regulator by Gyunam Jeon Master of Science in Electrical and Computer Engineering Northeastern University, June 2015 Dr. Yong-Bin Kim, Adviser In the recent years, the world has seen a huge boom in portable electronic products like cell phones, tablets, etc. Most of the products are powered by a battery that requires a power supply nois...

Mixed and analog systems design with high performance suffers from many difficulties due to supply voltage, power consumption and area overhead. A need for low-voltage low-power operational amplifiers exists and used for some applications. This paper deals an effective OTA design for good PSRR, low-voltage, low-power and wide output voltage swing operational amplifier. Trying to combine an alte...

A 2.5V high precision BiCMOS bandgap reference with supply voltage range of 6V to 18V was proposed and realized. It could be applied to lots of Power Management ICs (Intergrated Circuits) due the high voltage. By introducing a preregulated current source, the PSRR (Power Supply Rejection Ratio) of 103dB at low frequency and the line regulation of 26.7μV/V was achieved under 15V supply voltage a...

This article presents a fully on-chip low-power LDO voltage regulator dedicated to remotely powered wireless cortical implants. This regulator is stable over the full range of alternating load current and provides fast load regulation achieved by applying a time-domain design methodology. Moreover, a new compensation technique is proposed and implemented to improve PSRR beyond the performance l...

The oligonucleotides d[(G-A)7G] and d[(G-A)12G] self-associate under physiological conditions (10 mM MgCl2, neutral pH) into a stable double-helical structure (psRR-DNA) in which the two polypurine strands are in a parallel orientation in contrast to the antiparallel disposition of conventional B-DNA. We have characterized psRR-DNA by gel electrophoresis, UV absorption, vacuum UV circular dichr...

This work presents an ultra-low-voltage ultra-low-power weak inversion composite MOS transistor. The steady state power consumption and the linear swing signal of the composite transistor are comparable to a single transistor, whereas presenting very high output impedance. This work also presents two interesting applications for the composite transistor; a 1:1 current mirror and an extremely lo...

The PSRR of a linear regulator is determined by three factors: 1. The PSRR of the bandgap voltage reference, whose output ripple affects the output ripple of the linear regulator up to the roll-off frequency of the bandgap. 2. The open-loop gain of the feedback loop (AV), which is roughly equal to the open-loop gain of the error amplifier, up to the 0dB (unity gain) crossover frequency of the l...

 Abstract—The dual-band recording of the local-field potential (LFP, 0.1Hz~200Hz) and the spike potential (SP, 200Hz~10kHz) is important for physiological studies at the cellular level. Recent study shows that the LFP signal plays important roles in modulating many profound cellular mechanisms. Although various bio-signal acquisition circuits have been reported over the years, few designs are ...