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Bandwidth and Slew Rate Enhanced OTA With Sustainable Dynamic Bias
- Source :
- IEEE Transactions on Circuits and Systems II: Express Briefs. 67:635-639
- Publication Year :
- 2020
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2020.
-
Abstract
- A bandwidth and slew rate (SR) enhanced operational transconductance amplifier (OTA) with proposed sustainable dynamic bias, transient detector and passive on-chip high-pass filter is presented in this brief. The proposed design is able to detect large-signal applied to the input of the amplifier and dynamically adjust its bias current to enhance both unity-gain bandwidth (UGB) and SR at the same time to achieve fast-settling behavior without overshoot and undershoot, along with high immunity against variations of supply voltage and bias current. Fabricated with a commercial 130-nm CMOS technology, the proposed design is verified by measurements that it is able to increase its SR by over 15 times, with more than 7.5 times reduction in its power consumption to attain fast settling time compared with a conventional design. Design considerations and an architectural comparison of the proposed design with another design with a different approach are also included in this brief to verify its performance and viability.
- Subjects :
- Computer science
Settling time
Amplifier
Transconductance
020208 electrical & electronic engineering
Bandwidth (signal processing)
020206 networking & telecommunications
Slew rate
02 engineering and technology
CMOS
Operational transconductance amplifier
Hardware_INTEGRATEDCIRCUITS
0202 electrical engineering, electronic engineering, information engineering
Overshoot (signal)
Electronic engineering
Electrical and Electronic Engineering
Subjects
Details
- ISSN :
- 15583791 and 15497747
- Volume :
- 67
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Circuits and Systems II: Express Briefs
- Accession number :
- edsair.doi...........64b5d8de5c9142995b125c422067b189