Low power high-gain class-AB OTA with dynamic output current scaling

IEICE Electronics Express

Youngil Kim¹  Sangsun Lee¹ 

[1] Department Nanoscale Semiconductor Engineering, Hanyang University

关键词: operational transconductance amplifier (OTA);    slew rate;    dynamic biasing;    voltage regulators;    low-dropout regulator (LDO);   

DOI  :  10.1587/elex.10.20130042

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(5)A high-performance operational transconductance amplifier (OTA) is proposed. In order to increase DC gain, gain bandwidth, and the slew rate under low standby quiescent current, the proposed OTA has the dynamic output current scaling and class AB operation. Under the condition of 250µA quiescent current and a 30pF load capacitance with a step voltage from 1.2 to 1.5V at a rise time of 1nsec in a unit gain configuration, HSPICE simulation results are presented to show a higher DC gain, gain bandwidth and slew rate than conventional OTAs.

【 授权许可】

Unknown