Two High Slew Rate Buffers Based on Flipped Voltage Follower

Abstract

Two Voltage followers (VF) suited to low-voltage operation and able to operate with a high-slew rate and low-output impedance are presented. The buffer core is based on the flipped voltage follower (FVF) which is previously presented in literature. A detailed comparison of proposed buffers and other voltage followers is presented. These buffers have been simulated using 0.18 µm CMOS technology models provided by TSMC. The buffers consume 10 µA from 1.2 V supply and have a power consumption of 25 µw. The first and second proposed buffers have slew rate of 13 V/µs and 32 V/µs, respectively, with output impedance of about 50 Ω.