A 0.7 V 24 μA Hybrid OTA Driving 15 nF Capacitive Load With 1.46 MHz GBW
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AbstractA cascade structure of six proposed signal-current enhancers is applied to a standard operational transconductance amplifier (OTA) to improve its gain-bandwidth (GBW) product, slew rate (SR), and voltage gain through significant enhancements of the small-signal and transient output currents from the proposed enhancers. The proposed hybrid OTA is implemented in a standard 0.13 μm CMOS technology, with an active chip area of 0.0027 mm2. Working under a 0.7 V supply and as proven by the measurement results, the resultant OTA when driving an output capacitor of 15 nF attained ∼100 dB gain, a GBW of 1.46 MHz, and an SR of 0.47 V/μs, consuming only 24 μA of current and requiring no compensation capacitor.
All Author(s) ListMak K.H., Lau M.W., Guo J., Mui T.W., Ho M., Goh W.L., Leung K.N.
Journal nameIEEE Journal of Solid-State Circuits
Detailed descriptionVol. 50, No. 11,
Volume Number50
Issue Number11
PublisherInstitute of Electrical and Electronics Engineers
Place of PublicationUnited States
Pages2750 - 2757
LanguagesEnglish-United Kingdom
KeywordsGain, Logic gates, Manganese, Mirrors, Noise, Standards, Transconductance

Last updated on 2021-20-09 at 00:23