A Linearization Technique for Differential OTAs
(2017) In IEEE Transactions on Circuits and Systems II: Express Briefs 64(9). p.1002-1006- Abstract
- This brief presents an operational transconductance amplifier (OTA) linearization technique that is applied to a low-noise amplifier (LNA) and an OTA-C filter. Simulations show the effectiveness of the proposed technique on the LNA, whose noise and gain performance remain unaffected while the linearity is significantly improved. Measurements of the 80-MHz fourth order Butterworth OTA-C filter are also presented. It is implemented using six OTAs instead of eight, thus reducing the power consumption and area. The filter is implemented in 65-nm low-power CMOS, with a core area of 0.05 mm 2 and consumes 12.6 mA from 1.2 V supply. The measured in-band noise voltage is below 42 nV/ Hz‾‾‾√ , and the measured third order intercept point... (More)
- This brief presents an operational transconductance amplifier (OTA) linearization technique that is applied to a low-noise amplifier (LNA) and an OTA-C filter. Simulations show the effectiveness of the proposed technique on the LNA, whose noise and gain performance remain unaffected while the linearity is significantly improved. Measurements of the 80-MHz fourth order Butterworth OTA-C filter are also presented. It is implemented using six OTAs instead of eight, thus reducing the power consumption and area. The filter is implemented in 65-nm low-power CMOS, with a core area of 0.05 mm 2 and consumes 12.6 mA from 1.2 V supply. The measured in-band noise voltage is below 42 nV/ Hz‾‾‾√ , and the measured third order intercept point improvement using OTA linearization is up to 17 dB in-band and about 3 dB out-of-band. Supply and temperature variation measurements on three samples show that the linearization is effective without a need for bias adjustment. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/50cf4179-e101-4e95-9447-250d912824ac
- author
- Abdulaziz, Mohammed LU ; Ahmad, Waqas LU ; Törmänen, Markus LU and Sjöland, Henrik LU
- organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Transactions on Circuits and Systems II: Express Briefs
- volume
- 64
- issue
- 9
- pages
- 1002 - 1006
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85029583852
- wos:000408771000002
- ISSN
- 1549-7747
- DOI
- 10.1109/TCSII.2016.2617920
- language
- English
- LU publication?
- yes
- id
- 50cf4179-e101-4e95-9447-250d912824ac
- date added to LUP
- 2017-09-07 12:50:29
- date last changed
- 2024-04-14 17:39:26
@article{50cf4179-e101-4e95-9447-250d912824ac, abstract = {{This brief presents an operational transconductance amplifier (OTA) linearization technique that is applied to a low-noise amplifier (LNA) and an OTA-C filter. Simulations show the effectiveness of the proposed technique on the LNA, whose noise and gain performance remain unaffected while the linearity is significantly improved. Measurements of the 80-MHz fourth order Butterworth OTA-C filter are also presented. It is implemented using six OTAs instead of eight, thus reducing the power consumption and area. The filter is implemented in 65-nm low-power CMOS, with a core area of 0.05 mm 2 and consumes 12.6 mA from 1.2 V supply. The measured in-band noise voltage is below 42 nV/ Hz‾‾‾√ , and the measured third order intercept point improvement using OTA linearization is up to 17 dB in-band and about 3 dB out-of-band. Supply and temperature variation measurements on three samples show that the linearization is effective without a need for bias adjustment.}}, author = {{Abdulaziz, Mohammed and Ahmad, Waqas and Törmänen, Markus and Sjöland, Henrik}}, issn = {{1549-7747}}, language = {{eng}}, number = {{9}}, pages = {{1002--1006}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Transactions on Circuits and Systems II: Express Briefs}}, title = {{A Linearization Technique for Differential OTAs}}, url = {{http://dx.doi.org/10.1109/TCSII.2016.2617920}}, doi = {{10.1109/TCSII.2016.2617920}}, volume = {{64}}, year = {{2017}}, }