Linearity of bulk-controlled inverter ring VCO in weak and strong inversion
(2005) p.145-148- Abstract
- Frequency modulation in ring VCOs is investigated. Primarily, the linearity of conversion from input voltage to output frequency is considered. Bulk-voltage control of the threshold voltage of the VCO transistors is found to be a very promising approach for applications in frequency /spl Delta//spl Sigma/ converters. Different approaches apply in presence of high supply voltages, when transistors work in strong inversion, compared to low supply voltages, when transistors are in weak inversion. In strong inversion, second-order effects controlled by the supply voltage linearize the VCO modulation, while in weak inversion an improved linearity can be obtained using soft rails, at the expense of a reduced sensitivity.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1051208
- author
- Wismar, Ulrik ; Wisland, Dag and Andreani, Pietro LU
- publishing date
- 2005
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 23rd NORCHIP Conference, 2005.
- pages
- 145 - 148
- external identifiers
-
- scopus:33847188105
- ISBN
- 1-4244-0064-3
- DOI
- 10.1109/NORCHP.2005.1597010
- language
- English
- LU publication?
- no
- id
- 7eff3ec7-2f2b-4944-8a3b-fc04171d26ec (old id 1051208)
- alternative location
- http://ieeexplore.ieee.org/iel5/10643/33584/01597010.pdf?tp=&isnumber=33584&arnumber=1597010&punumber=10643
- date added to LUP
- 2016-04-04 14:15:01
- date last changed
- 2022-01-30 01:39:37
@inproceedings{7eff3ec7-2f2b-4944-8a3b-fc04171d26ec,
abstract = {{Frequency modulation in ring VCOs is investigated. Primarily, the linearity of conversion from input voltage to output frequency is considered. Bulk-voltage control of the threshold voltage of the VCO transistors is found to be a very promising approach for applications in frequency /spl Delta//spl Sigma/ converters. Different approaches apply in presence of high supply voltages, when transistors work in strong inversion, compared to low supply voltages, when transistors are in weak inversion. In strong inversion, second-order effects controlled by the supply voltage linearize the VCO modulation, while in weak inversion an improved linearity can be obtained using soft rails, at the expense of a reduced sensitivity.}},
author = {{Wismar, Ulrik and Wisland, Dag and Andreani, Pietro}},
booktitle = {{23rd NORCHIP Conference, 2005.}},
isbn = {{1-4244-0064-3}},
language = {{eng}},
pages = {{145--148}},
title = {{Linearity of bulk-controlled inverter ring VCO in weak and strong inversion}},
url = {{http://dx.doi.org/10.1109/NORCHP.2005.1597010}},
doi = {{10.1109/NORCHP.2005.1597010}},
year = {{2005}},
}