In this work, we propose a rail-to-rail output buffer with low static-power and high speed for OLED display applications. To guarantee low static power consumption, low tail-current is designed in the buffer’s first stage and the output stage is cut off in the static operation. To improve the transient response, dynamic-current-bias technique is used, and it also improves the system stability by pushing away the non-dominant pole. Meanwhile, we balance the large-signal slew-rate and system stability with dual-output buffer structure. Placing compensation resistor across the dual outputs creates zero for suitable phase margin, while the real output still behaves with low ON resistance and keeps high slew rate. The proposed design has been verified by a 0.18 μm 1.8 V/5 V CMOS process, which shows that the buffer only draws 2.8-μA static current. Under a 1-nF capacitance load and a 5-V power supply, the buffer achieves 1.18-μs settling time, which is only 41% of the single-output-stage structure with the same chip size (52 μm \(\times\) 59 μm).

在这项工作中，我们提出了一种用于OLED显示应用的低静态功耗和高速的轨到轨输出缓冲器。为了保证低静态功耗，在缓冲器的第一级设计了低尾电流，并且在静态操作中切断了输出级。为了改善瞬态响应，使用了动态电流偏置技术，该技术还通过推开非主导极点来提高系统稳定性。同时，我们在大信号摆率和系统稳定性与双输出缓冲器结构之间取得了平衡。在双路输出之间放置补偿电阻会为适当的相位裕量产生零，而实际输出仍会表现出低导通电阻并保持较高的压摆率。拟议的设计已通过0.18μm的1.8 V / 5 V CMOS工艺进行了验证，表明该缓冲器仅吸收2.8μA的静态电流。\（\ times \） 59μm）。