1. IMPROVED LOW-POWER HIGH-SPEED BUFFER AMPLIFIER WITH SLEW-RATE ENHANCEMENT FOR LCD APPLICATIONS.
- Author
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MARANO, DAVIDE, PALUMBO, GAETANO, and PENNISI, SALVATORE
- Subjects
- *
LIQUID crystal display industry , *ELECTRONIC amplifiers , *BUFFER storage (Computer science) , *ELECTRIC currents , *LIQUID crystals - Abstract
The present paper addresses an improved low-power high-speed buffer amplifier topology for large-size liquid crystal display applications. The proposed buffer achieves high-speed driving performance while drawing a low quiescent current during static operation. The circuit offers enhanced slewing capabilities with a limited power consumption by exploiting a slew detector which monitors the output voltage of the input differential amplifier and outputs an additional current signal providing slew-rate enhancement at the output stage. Post-layout simulations show that the proposed buffer can drive a 1 nF column line load with 8.5 V/μs slew-rate and 0.8 μs settling time, while drawing only 8 μA static current from a 3 V power supply. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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