A transconductance-enhancement cascode Miller compensation for low-power multistage amplifiers. (March 2018)

• Record Type: Journal Article
• Authors: Dong, Siwan; Zhu, Zhangming
• Is Part Of: Microelectronics journal. Volume 73(2018)
• Page Start: 94
• Page End: 100
• Publication Date: 2018-03
• Subjects: Multistage amplifiers -- Transconductance enhancement -- Frequency compensation -- Very large capacitive load -- Three-stage amplifier; Microelectronics -- Periodicals; Microélectronique -- Périodiques; Microelectronics; Electronic journals; Journals - contents and abstracts; Periodicals; 621.3805
• DOI: 10.1016/j.mejo.2018.01.009
• Languages: English
• ISSNs: 0959-8324

Abstract

Abstract: A transconductance-enhancement cascode Miller compensation technique is proposed for low supply-power, large or very large capacitive load multistage amplifiers. By using the transconductance-enhancement operational amplifiers and the local impedance attenuation network, both the gain bandwidth and setting time are thus significantly improved. The effectiveness of the method has been verified in a 0.18 μm CMOS process, the proposed three-stage amplifier has over 100 dB gain, 6.5 MHz gain-bandwidth product, and 0.83 V/μs slew rate while consuming 23 μW power from a 1.2 V supply while driving a 560 pF load.