Title :
Input adapter based BiCMOS operational amplifier with rail-to-rail capability
Author :
Niksa Tadic;Mirjana Banjevic;Franz Schloegl;Horst Zimmermann
Author_Institution :
Vienna University of Technology, Faculty of Electrical Engineering and Information Technology, Institute of Electrical Measurements and Circuit Design, Gusshausstrasse 25/354, A-1040, Austria
Abstract :
A rail-to-rail operational amplifier in 0.6 μm BiCMOS technology is presented. Two simple input signal adapters with floating outputs are introduced. They translate the input signals into the operating region of the differential amplifier, enabling rail-to-rail operation. An inverter-based rail-to-rail class AB output stage was used. With a bipolar supply of ± 0.75 V, the proposed rail-to-rail operational amplifier achieves 70 dB DC open-loop gain, 2.36 MHz unity gain frequency, 64° phase margin, 2.3 V/μs slew rate, and 146 μW power consumption.
Keywords :
"BiCMOS integrated circuits","Operational amplifiers","Rail to rail amplifiers","Rail to rail operation","Rail to rail inputs","Differential amplifiers","Rail to rail outputs","Power amplifiers","Gain","Frequency"
Conference_Titel :
Microelectronics, 2008. MIEL 2008. 26th International Conference on
Print_ISBN :
978-1-4244-1881-7
DOI :
10.1109/ICMEL.2008.4559306
