IDDQ Testing of Low Voltage CMOS Operational Transconductance Amplifier

Abstract

The paper describes the design for testability (DFT) of low voltage two stage operational transconductance amplifiers based on quiescent power supply current (IDDQ) testing. IDDQ testing refers to the integral circuit testing method based upon measurement of steady state power supply current for testing both digital as well as analog VLSI circuit. A built in current sensor, which introduces insignificant performance degradation of the circuit-under-test, has been proposed to monitor the power supply quiescent current changes in the circuit under test. Moreover, the BICS requires neither an external voltage reference nor a current source and able to detect, identify and localize the circuit faults. Hence the BICS requires less area and is more efficient than the conventional current sensors. The testability has also been enhanced in the testing procedure using a simple fault-injection technique. Both bridging and open faults have been analyzed in proposed work by using n-well 0.18µm CMOS technology.

Design of very low-voltages and high-performance CMOS gate-driven operational amplifier

“…MOSFETs circuits, and the only solution to keep pace with the performance of the digital MOSFETs circuits is to choose suitable and simple analog MOSFETs circuits topologies with very LVs power supplies. CMOS operational amplifier (Op-Amp) circuits with different topologies are the main building blocks that perform useful and multiple functions in the analog and mixed-signal integrated circuits (ICs) [10][11][12][13]. Consequently, the selection of suitable and simple design for very LVs power supplies and high-performance specifications CMOS Op-Amp circuits is very crucial because their performance specifications directly affect the overall performance specifications of the analog and mixed-signal ICs.…”

Design and simulate a doherty power amplifier using GaAs technology for telecommunication applications

“…In recent years, due to the increasing demand for communication with high rates of transmission and receiving data, new generations and standards have been developed for data transmission that require lowenergy, low -volume, low -performance standards. in high performance analog integrated circuits, operational transconductance amplifier with very high DC gain and high unity gain frequency are needed to meet both accuracy and fast settling requirements of the systems [8]. Due to the limitations of CMOS technology, a linear power amplifier is a challenging issue.…”