scholarly journals Operational Transconductance Amplifier With Class-B Slew-Rate Boosting for Fast High-Performance Switched-Capacitor Circuits

2018 ◽  
Vol 65 (11) ◽  
pp. 3769-3779 ◽  
Author(s):  
Mohammad H. Naderi ◽  
Suraj Prakash ◽  
Jose Silva-Martinez
Keyword(s):  
High Performance ◽  
Switched Capacitor ◽  
Slew Rate ◽  
Operational Transconductance Amplifier ◽  
Switched Capacitor Circuits ◽  
Transconductance Amplifier ◽  
Class B

scholarly journals Operational Transconductance Amplifier in 350nm CMOS technology

2015 ◽  
Vol 19 (1) ◽  
pp. 32
Author(s):  
Dejan D. Mirković ◽  
Predrag M. Petković ◽  
Ilija Dimitrijević ◽  
Igor Mirčić
Keyword(s):  
Cmos Technology ◽  
Open Loop ◽  
Switched Capacitor ◽  
Loop Gain ◽  
Operational Transconductance Amplifier ◽  
Mixed Signal ◽  
Switched Capacitor Circuits ◽  
Transconductance Amplifier ◽  
Technology Process ◽  
Level Design

This paper presents transistor level design ofoperational transconductance amplifier in CMOS technology.Custom designed, circuit is to be built-in into the mixed-signal,switched capacitor circuit. Amplifier targets relatively high slewrateand moderate open loop gain with megahertz order gainbandwidth.Adopted architecture is discussed appreciatingapplication in switched capacitor circuits. Circuit behavior isexamined through set of simulations. Obtained results confirmeddesired behavior. Target technology process is TSMC 350nm.

scholarly journals FinFET Based Tunable Analog Circuit: Design and Analysis at 45 nm Technology

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Ravindra Singh Kushwah ◽  
Shyam Akashe
Keyword(s):  
Analog Circuits ◽  
High Performance ◽  
Analog Circuit ◽  
Schmitt Trigger ◽  
Low Noise ◽  
Operational Transconductance Amplifier ◽  
Back Gate ◽  
Amplifier Circuit ◽  
Tunable Circuits ◽  
Transconductance Amplifier

We included a designing of low power tunable analog circuits built using independently driven FinFETs devices, where the controlling of the back gate provide the output on the front gate. We show that this could be an effective solution to conveniently tune the output of bulk CMOS analog circuits particularly for Schmitt trigger and operational transconductance amplifier circuits. FinFET devices can be used to increase the performance by reducing the leakage current and power dissipation, because front and back gates both are independently controlled. FinFET device has a higher controllability, resulting relatively high Ion/Ioff ratio. In this paper, we proposed a tunable analog circuit such as CMOS amplifier circuit, Schmitt trigger circuit, and operational transconductance amplifier circuit, these circuit blocks are necessary for low noise high performance ICs for analog applications. Gain, phase, group delay, and output response of analog tunable circuits have been discussed in this paper. The proposed FinFET based analog tunable circuits have been designed using Cadence Virtuoso tool at 45 nm.

Low Power Operational Transconductance Amplifier (OTA) with Enhanced DC Gain and Slew-Rate

2013 ◽  
Vol 411-414 ◽  
pp. 1645-1648
Author(s):  
Xiao Zong Huang ◽  
Lun Cai Liu ◽  
Jian Gang Shi ◽  
Wen Gang Huang ◽  
Fan Liu ◽  
...  
Keyword(s):  
Low Voltage ◽  
Cmos Technology ◽  
Optimization Techniques ◽  
Current Mirror ◽  
Slew Rate ◽  
Operational Transconductance Amplifier ◽  
Theory Analysis ◽  
Transconductance Amplifier ◽  
Dc Gain ◽  
Simulation Results

This paper presents a low-voltage differential operational transconductance amplifier (OTA) with enhanced DC gain and slew-rate. Based on the current mirror OTA topology, the optimization techniques are discussed in this work. The proposed structure achieves enhanced DC gain, unit gain frequency (UGF) and slew-rate (SR) with adding four devices. The design of the OTA is described with theory analysis. The OTA operates at the power supply of 1.8V. Simulation results for 0.18μm standard CMOS technology show that the DC gain increases from 60.6dB to 65dB, the UGF is optimized from 2.5MHz to 4.3MHz, the SR is enhanced from 0.88 V/μs to 4.8 V/μs with close power consumption dramatically.

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