Bandgap circuit design using current mode approach by Chow, Mei Yi.

“…The purpose of the circuit design is to design a Bandgap Circuit that is to design an operational amplifier (Op-amp) to be able to operate its function close to the idea of how an ideal operational amplifier (Op-amp). …”
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Feasibility studies of high data rate ADC by Goo, Yong Soon.

“…In particular, the design of the two-stage high speed operational-amplifier has been carried out in transistor level. …”
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Improving the Signal to Noise Ratio of QTF Preamplifiers Dedicated for QEPAS Applications by Piotr Z. Wieczorek, Tomasz Starecki, Frank K. Tittel

“…Moreover, special care should be taken when choosing a particular operational amplifier in either a transimpedance or voltage (differential) configuration. …”
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Design of CMOS buffer by Chan, Khang Yie

“…The final circuit is an operational amplifier with embedded buffer and the performance is discussed.…”
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Design of a 1.8v successive approximation register analog-to-digital converter with low noise by Hassan, Hur A.

“…From simulation, input referred noise for both two stage operational amplifier and folded cascode amplifier are 18 nV/√Hz. …”
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Current mode voltage reference by Goh, Siow Chnia

“…The power consumption is 356.976uW , the line regulation of the circuit designed was 45.2uV/V and the PSRR of the circuit is 77.23dB under normal operating condition in 300K. The operational amplifier has a relatively high gain of 79.16dB and the phase margin is around 83.82 deg. …”
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Multifunctional Platform with CMOS-Compatible Tungsten Microhotplate for Pirani, Temperature, and Gas Sensor by Jiaqi Wang, Jun Yu

“…It consisted of a tungsten microhotplate and an on-chip operational amplifier. The platform was fabricated in a standard complementary metal oxide semiconductor (CMOS) process. …”
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Development and research of an information-measuring system for quality control of agricultural products by Mishukov Stanislav, Vorotnikov Igor, Mastepanenko Maxim, Gabrielyan Shaliko

“…The study of this method was carried out using simulation modeling in the SimInTech environment, while custom operational amplifier blocks and sample-and-hold circuit were built. …”
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A 1.8v 10-Bit 100ms/S Fully Differential Pipelined Adc In Cmos 0.18um Process Technology by Khoo , Boon Hee

“…Flipped Voltage Follower (FVF) operational amplifier has been recommended as operational amplifier to achieve high sampling rate .Ten stages pipelined ADC was developed and tested at 50MS/s and 100MS/s. …”
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Influence of the Gain–Bandwidth of the Front-End Amplifier on the Performance of a QEPAS Sensor by Luigi Lombardi, Gianvito Matarrese, Cristoforo Marzocca

“…The quartz tuning fork used as an acoustic sensor in quartz-enhanced photo-acoustic spectroscopy gas detection systems is usually read out by means of a transimpedance preamplifier based on a low-noise operational amplifier closed in a feedback loop. The gain–bandwidth product of the operational amplifier used in the circuit is a key parameter which must be properly chosen to guarantee that the circuit works as expected. …”
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Designing control loops for linear and switching power supplies : a tutorial guide / by 317873 Basso, Christophe P.

Design of low-voltage switched-capacitor filters by Loh, Nyean Wei.

“…The amplifiers include differential operational amplifier, fully differential operational amplifier and pseudo differential SC amplifier. …”
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Design And Simulation Of Cmos-Based Low Voltage Variation Bandgap Reference Voltage Circuitry Using 0.18μm Process Technology by Tan, Chee Yong

“…The operational amplifier and BGR circuits were simulated using DC and AC analysis in Cadence software. …”
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Design of a CMOS class AB op amp with a constant input transconductance by Ngo, Minh Phuong.

“…Being one of the most fundamental building blocks of analog system, it is a challenge to design an operational amplifier in small size and yet remains in good operation under low voltage. …”
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Design Of Digital To Analog Converter (DAC) For Integrated Bluetooth Applications Using 0.18μm CMOS Technology by Low, Pit Xing

“…This operational amplifier is a current mirror op-amp with open loop dc voltage gain of 24.64dB. …”
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Home based fetal heart rate monitor by Shabry, N. A. N. B. M., Singh, O. P., Sardana, P., Hisham, R. B., Malarvili, M. B.

“…The sensor acquires the data then undergoes pre-processing which involves amplification and filtration using fourth order low pass butterworth filter. The operational amplifier was used for pre-amplification during filteration; the operational amplifier used is LM 741. …”

An ultra low-power precision sample-and-hold circuit for biomedical applications by Tan, Hui Ling.

“…A new ultra low-power precision sample-and-hold circuit is realized in this project by reducing the potential loading capacitance seen by the operational amplifier during operation through using a C-series capacitor load technique and an ultra low-power op-amp.…”
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Electronic Amplifier / by Fusco, Heather, author 648172

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Design of a low noise CMOS Op-Amp with high PSRR by The, Yen Ju.

“…This report presents a low voltage, low power, low noise and high power supply rejection ratio (PSRR) operational amplifier to drive a resistive load of 10k Ohm in parallel with a capacitive loadof70pF.…”
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Sensing interface for high-resolution accelerometers by Zhang, Xiaoling

“…In combination with chopper stabilization technique, the interface topology offers simplicity in canceling the offset and 1/f noise of the CMOS operational amplifier. The power consumption of the sensor system is only 859.6u,A.…”
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