10 µA Quiescent Current Opamp Design for LCD Driver ICs

Tetsuro ITAKURA  Hironori MINAMIZAKI  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E81-A   No.2   pp.230-236
Publication Date: 1998/02/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Analog Circuit Techniques in the Digital-Oriented Era)
analog circuits and signal processing,  integrated electronics,   CMOS opamp,  low power,  

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This paper examines the design considerations for an opamp to be used in a low-power consumption LCD driver IC: (1) slew rate enhancement suitable for a rail-to-rail input stage; (2) improved phase compensation with reduced compensation capacitance; and (3) limitation of instantaneous current consumption. The experimental results support our opamp design approach and indicate the feasibility of a 10 µA quiescent current opamp.