Low-voltage, rail-to-rail, Gm-enhanced pseudo-differential class-AB OTA

被引：0
|
作者：
Thanachayanont, A [1 ]
Chaloenlarp, W [1 ]
机构：
[1] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Dept Elect Engn,Microelect Res Lab, Res Ctr Commun & Informat Technol, Bangkok 10520, Thailand
来源：
2004 47TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL I, CONFERENCE PROCEEDINGS | 2004年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents a new class-AB pseudo-differential operational transconductance amplifier (OTA) for low-voltage and high-speed switched-capacitor circuits. The proposed OTA employs partial positive feedback to enhance the input transconductance, thus increasing the open-loop DC gain and the unity-gain frequency. A push-pull configuration is used to obtain rail-to-rail output voltage swing. Using a 0.35-mum digital CMOS process, the proposed OTA can obtain 78-dB DC gain, 72.5(0) phase margin, 100-V/mus slew rate with 1-pF load capacitor, while draining 170-muA quiescent supply current from a single 1-V power supply voltage.
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页码：53 / 56
页数：4
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