High-Slew-Rate Low-Static-Power Dynamic-Bias Rail-to-Rail Output Buffer for OLED-on-Silicon VR Microdisplay

摘要

In this paper, a high-slew-rate low-static-power rail-to-rail output buffer with dynamic bias has been proposed. When input voltage is stable, this buffer can automatically shut down its output transistors so as to reduce the static power consumption. When input voltage changes, it triggers the proposed feedback to supply more tail current. Thus, faster slew rate and superior system stability are achieved. Based on 0.25 μm process, the simulation results show that the proposed buffer with feedback is more stable and can support wider range of output loading, and the slew rate is 22.8 V/μs, which is 2.6 times larger than that of the buffer without feedback.