Paper Info
Title
A Low-Noise, Positive-Input, Negative-Output Voltage Generator for Low-to-Moderate Driving Capacity Applications
Abstract
In this paper, a generic, low-noise, negative-voltage generator with wide tuning range and moderate driving capacity is presented. The highly integrated solution, incorporating a fully-integrated charge-pump and a regulator block, requires only one off-chip capacitor that can be shared with the supply decoupling capacitors. The fully integrated charge-pump operation is analyzed quantitatively, and a closed-form expression of its output impedance is derived. Powered from a single 3.3-V dc input, the output has a tuning range from −4.4 to +2.1 V for biasing applications, while the design supports a maximum load current of 250, 550, and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$800~\mu \text{A}$ </tex-math></inline-formula> for the regulated output voltage at −3.0, −1.5, and 1.5 V, respectively. The measured steady-state ripple is under 3 mV <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">PP</sub> , while the noise voltage at the charge-pump operating frequency harmonics is below 130 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mu \text {V}_{\mathrm{ rms}}$ </tex-math></inline-formula> and the noise floor is under <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$5~\mu \text {V}_{\mathrm{ rms}}$ </tex-math></inline-formula> . The design is also the application verified with a gallium nitride power amplifier, thus further confirming its low-noise performance. Implemented in CMOS 180-nm process, the prototype chip occupies an area of 0.55 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
Year
DOI
Venue
2019
10.1109/TCSI.2019.2927117
IEEE Transactions on Circuits and Systems I: Regular Papers
Keywords
Field
DocType
Generators,Regulators,Charge pumps,Impedance,Voltage control,Capacitors,Switches
Output impedance,Topology,Capacitor,Noise floor,Control theory,CMOS,Decoupling capacitor,Ripple,Mathematics,Amplifier,Biasing
Journal
Volume
Issue
ISSN
66
9
1549-8328
Citations 
PageRank 
References 
0
0.34
0
Authors
6
Name
Order
Citations
PageRank
Devrishi Khanna100.34
Chirn Chye Boon213626.81
Pilsoon Choi34610.72
Siek, L.4114.61
Bei Liu500.68
Li Chenyang6148.48