A Low-Quiescent Current Two- Input/Output Buffer with Class A-B Output Stage for LCD Driver
Journal Title: International Journal of Advanced Research in Computer Engineering & Technology(IJARCET) - Year 2012, Vol 1, Issue 8
Abstract
the evolution of compact, light-weight, low-power, and high-quality displays has caused a large demand for liquid crystal display (LCD) drivers, with features such as low cost, low power dissipation, high speed, and high resolution. we propose a low–Quiescent current Two-Input/Output buffer with class A-B output stage for LCD driver applications. The propose buffer amplifier achieve high speed driving performance, draws a small quiescent current during static operation and offer a rail to rail communication-mode input rang Two-Input/Output buffer with class A-B output stage for LCD driver. A current reuse technique is employed in the output stage of the buffer amplifier to reduce the quiescent current consumption. An experimental prototype 6-bit LCD column driver with the proposed buffer amplifiers implemented in a 0.35-μm CMOS technology demonstrates that an average value of 0.2 µA static current is consumed in one channel driver. The settling time to settle within 0.15% of the final voltage is 4 µs under a 30-KΩ- resistance and 2-pF-capacitance load. The area of this two input/ output buffer amplifier is 18 µm × 170μm.
Authors and Affiliations
Deepchand Jaiswal , Rita Jain , M. Zahid Alam
Keywords
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