In this paper, we propose a fully standard-cell-based common-mode feedback (CMFB) loop with an explicit voltage reference to improve the CMRR of pseudo-differential amplifiers and stabilize dc output voltage. This latter feature allows robust biasing operational transconductance (OTAs) based on cascade such stages. A detailed analysis CMFB is reported both provide insight into circuit behavior ...

<p><span>Fin field-effect transistor (FinFET) based analog circuits are gaining importance over metal oxide semiconductor field effect (MOSFET) with stability and high frequency operations. Comparator that forms the sub block of most is designed using operational transconductance amplifier (OTA). The OTA new design procedures comparator circuit integrating OTA. building blocks such ...

A novel, inverter-based, fully differential, body-driven, rail-to-rail, input stage topology is proposed in this paper. The exploits a replica bias control loop to set the common mode current and feed-forward strategy its output voltage. This novel cell used build an ultralow voltage (ULV), ultralow-power (ULP), two-stage, unbuffered operational amplifier. dual path compensation exploited impro...

A novel architecture and design approach which make it possible to boost the bandwidth slew-rate performance of operational transconductance amplifiers (OTAs) are proposed employed a low-power OTA with top-of-class small-signal large-signal figures merit (FOMs). The makes enhance gain, for given power consumption capacitive load, achieving more than an order magnitude better comparable conventi...

The implementation of a fully-differential (FD) instrumentation amplifier (IA), based on indirect current feedback (ICF) and aimed to electrical impedance measurements in an Internet Things (IoT) biomedical scenario, is presented. IA consists two FD transconductors, process the input signal feed back output signal, summing stage, used add both contributions generate correcting common-mode netwo...

This paper presents the operation principle and silicon characterization of a power efficient ultra-low voltage area fully-differential, digital-based Operational Transconductance Amplifier (OTA), suitable for microscale biosensing applications (BioDIGOTA). Measured results in 180nm CMOS prototypes show that proposed BioDIGOTA is able to work with supply down 400 mV, consuming only 95 nW. Owing...

We have constructed a dc-coupled differential amplifier capable of operating in the 4.2 K – 300 K temperature range. The amplifier can be operated at high-bias setting, where it dissipates 5 mW, has noise temperature TN < 0.8 K at 4 k source resistance and >40 MHz bandwidth at 4.2 K bath temperature. The bias setting can be adjusted: at our lowest tested setting the amplifier dissipates <100 W,...

9 Abstract—This paper presents design concept of Operational Transconductance Amplifier (OTA). The 0.18μm CMOS process is used for Design and Simulation of this OTA. This OTA having a bias voltage 1.8 with supply voltage, the design and Simulation of this OTA is done using CADENCE Specters environment with UMC 0.18μm technology file. The Simulation results of this OTA shows that the open loop g...