A 0.6 V class-AB rail-to-rail CMOS OTA exploiting threshold lowering

作者：Centurelli F^*; Monsurro P; Parisi G; Tommasino P; Trifiletti A

来源：Electronics Letters, 2018, 54(15): 930-931.

DOI：10.1049/el.2018.5175

• CMOS analogue integrated circuits
• operational amplifiers
• capacitance 5 pF
• frequency 8
• 8 MHz
• gain 41 dB
• size 40 nm
• voltage 0
• 6 V
• unity-gain buffer configuration
• CMOS technology
• threshold voltages
• threshold lowering technique
• transistors
• low-voltage applications
• rail-to-rail input common-mode range
• operational transconductance amplifier topology
• threshold lowering
• class-AB rail-to-rail CMOS OTA

A class-AB OTA (operational transconductance amplifier) topology with rail-to-rail input common-mode range is proposed for application in very low-voltage applications. High efficiency is achieved by reusing transistors both for class-AB operation and for mirroring the output currents, and a threshold lowering technique is applied to allow supply voltages less than two threshold voltages. Simulations in 40 nm CMOS technology show 41 dB gain at +/- 0.3 V supply voltage, a unity-gain frequency of 8.8 MHz on a 5 pF load, class-AB behaviour and full rail-to-rail operation when closed in unity-gain buffer configuration.

• 出版日期2018-7-26