A Compact 0.3-V Class AB Bulk-Driven OTA
| Autor: | Fabian Khateb, Tomasz Kulej |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Semiconductor device fabrication business.industry Transconductance Transistor Electrical engineering 02 engineering and technology Capacitance 020202 computer hardware & architecture law.invention Threshold voltage Hardware and Architecture law Operational transconductance amplifier MOSFET 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Software Voltage |
| Zdroj: | IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 28:224-232 |
| ISSN: | 1557-9999 1063-8210 |
| Popis: | In this article, a new solution for an ultralow-voltage (ULV) ultralow-power (ULP) operational transconductance amplifier (OTA) is presented. Thanks to the combination of a low-voltage bulk-driven nontailed differential stage with the multipath Miller zero compensation technique, a simple class AB power-efficient ULV structure has been obtained, which can operate from supply voltages less than the threshold voltages of the employed MOS transistors, while offering rail-to-rail input common-mode range at the same time. The proposed OTA was fabricated using the 180-nm CMOS process from Taiwan Semiconductor Manufacturing Company (TSMC) and can operate from $V_{\mathbf {DD}}$ ranging from 0.3 to 0.5 V. The 0.3-V version dissipates only 12.6 nW of power while showing a 64.7-dB voltage gain at 1-Hz, 2.96-kHz gain-bandwidth product, and a 4.15-V/ms average slew-rate at 30-pF load capacitance. The measured results agree well with simulations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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