Abstract:
This paper proposes a low voltage wide input linear range CMOS Operational Transconductance Amplifier (OTA). The voltage-to-current is carried by bulk-driven flipped-volt...Show MoreMetadata
Abstract:
This paper proposes a low voltage wide input linear range CMOS Operational Transconductance Amplifier (OTA). The voltage-to-current is carried by bulk-driven flipped-voltage follower differential pair input stage based on resistive source degeneration topology. The DC quiescent current of proposed OTA is determined by active load (diode-connected transistors) to provide a class-AB bulk-driven flipped-voltage follower differential pair input stage. The proposed design is optimized for a 0.8-V single power supply voltage. Simulation results of current tuning for the fully differential transconductance amplifier show wide linear differential input voltage range of 750-mV has one percentage of total harmonic distortion. The proposed OTA is implemented a CMOS biquad filter. Post layout simulation illustrates AC frequency responses for low-pass, band-pass, high-pass, and reject-band-pass filter through Specter simulator on 0.18-μm CMOS technology.
Published in: 2014 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)
Date of Conference: 01-04 December 2014
Date Added to IEEE Xplore: 29 January 2015
Electronic ISBN:978-1-4799-6120-7