National Tsing Hua University Institutional Repository:A 0.7-V CMOS Operational Transconductance Amplifier with Bulk-Driven Technique
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    NTHUR > College of Electrical Engineering and Computer Science > Department of Electrical Engineering > EE Conference Papers >  A 0.7-V CMOS Operational Transconductance Amplifier with Bulk-Driven Technique

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    Title: A 0.7-V CMOS Operational Transconductance Amplifier with Bulk-Driven Technique
    Authors: M.-H. Shen;Y.-S. Wu;G.-H. Ke;P.-C. Huang
    Teacher: 黃柏鈞
    Date: 2010
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Relation: SoC Design Conference (ISOCC), 2010 International, Seoul, 22-23 Nov. 2010, Pages 392 - 395
    Keywords: CMOS
    Operational Transconductance Amplifier
    Abstract: This paper presents a two-stage pseudo-differential amplifier. Rail-to-rail operations are achieved by using bulk terminals as the inputs. The positive feedback technique is used to enhance the transconductance with negative conductance. The bulk terminals of all transistors are carefully biased to lower their threshold voltages (Vth) and maximize signal swing. Using a standard 0.18-μm CMOS technology, measurement results demonstrate that gain-bandwidth product is 0.97MHz. The settling time for a 0.7-Vpp step is 2.1/μS. The input referred noise is 0.14mV at 1MHz. All the circuits dissipate 0.107μW under a single 0.7-V power supply.
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