Recent Advances on the Design of High-Gain Wideband Operational Transconductance Amplifiers

Assaad, R.; Silva-Martí­nez, J.

doi:10.1155/2009/323595

Cited by 5 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, high performance analog-to-digital converters (ADCs) require OTA circuit with very high DC gain and gain-bandwidth product (GBW), to meet both accuracy and fast settling requirements of the systems [1]. In addition, high-gain amplifiers use cascode structures or multi-stage designs with long channel length transistors biased at low current levels, while, high-bandwidth amplifiers use single-stage designs with short channel length transistors biased at high current levels [2]. Telescopic and folded-cascode structures are two common structures for single-stage OTAs.…”

Section: Introductionmentioning

confidence: 99%

Regulated Telescopic OTA Optimization for Mobile WiMAX Applications. Nano CMOS OTA Performance Prediction Through Bisquare Weights Method

Mallek¹,

Daoud²,

Mnif³

et al. 2019

ijeei

View full text Add to dashboard Cite

This paper presents the design of a high performance Regulated Telescopic Operational Transconductance Amplifier (OTA) for low power and high speed sigma-delta modulator for Mobile WiMAX Applications. Indeed, the Regulated Telescopic OTA is an enhanced DC gain Telescopic circuit with the gate voltage of the cascode transistor is controlled by a feedback amplifier. An algorithmic driven methodology is developed ending to the optimal transistor geometries. Moreover, the proposed OTA was post-layout simulated for some process corners, temperature variation and Monte-Carlo analysis. The post-layout simulation results have achieved a DC gain of 66dB, a large GBW of 862MHz with a phase margin of 58degrees with only 6.24mW power consumption. In addition, the use of a robust Bisquare Weights (BW) method is investigated to predict the Regulated Telescopic OTA performance for new generation systems. Then, the impact of Nanometer CMOS on Regulated Telescopic OTA design is highlighted. It shows the potentialities of future CMOS processes to provide high speed and high performance OTA circuit.

show abstract

Section: Introductionmentioning

confidence: 99%

Regulated Telescopic OTA Optimization for Mobile WiMAX Applications. Nano CMOS OTA Performance Prediction Through Bisquare Weights Method

Mallek¹,

Daoud²,

Mnif³

et al. 2019

ijeei

View full text Add to dashboard Cite

show abstract

“…The novel MOS technologies with channel lengths about level of nanometers are capable of operating with low voltages. Therefore, low voltage-low power (LVLP) circuit design comes into prominence in the analog circuit technology [1], [2].…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of Low-Voltage VDIBA and Filter Application

Sokmen¹,

Tekin²,

Ercan³

et al. 2016

ElAEE

View full text Add to dashboard Cite

In this study, a low-voltage low-power design of previously introduced analog signal processing element called as Voltage Differencing Inverting Buffered Amplifier (VDIBA) is presented. Level shifter current mirrors are used in the circuit design in order to accomplish the low-voltage low-power operation. The configuration operates only with ±0.4 V supply voltages and consumes power 569 µW at the bias current 50 µA. Also, low-voltage transconductor which has highly linear gm is executed with the use of bulk-driven quasi-floating gate (BD-QFG) and source degeneration techniques. The simulations of the introduced circuit have been performed with 0.18 μm TSMC CMOS technology by SPICE. The theoretical approaches have been confirmed by the simulation results.

show abstract

“…The recent MOS structures with smaller channel dimensions are able to operate with low supply voltages. Thus, low voltage low power (LVLP) circuit design becomes the major topic of the analog IC technology [1], [2].…”

Section: Introductionmentioning

confidence: 99%

A Novel Low Voltage Low Power OTA Based on Level Shifter Current Mirror

Sokmen

Ercan

Tekin

et al. 2015

ElAEE

View full text Add to dashboard Cite

In this paper, a low voltage low power operational transconductance amplifier (OTA) structure is proposed. To achieve the low voltage low power operation, level shifter current mirrors are employed in the circuit structure. The proposed structure operates at ±0.5 V as supply voltages and dissipates power as 83 µW. Positive and negative slew rate of the circuit is 223 V/µs and 162 V/µs, respectively. Furthermore, the bandwidth of the circuit is about 80 MHz. The designed OTA is simulated with 0.18 µm TSMC CMOS technology parameters using SPICE. Simulation results have been justified the theoretical approach.

show abstract

Recent Advances on the Design of High-Gain Wideband Operational Transconductance Amplifiers

Cited by 5 publications

References 27 publications

Regulated Telescopic OTA Optimization for Mobile WiMAX Applications. Nano CMOS OTA Performance Prediction Through Bisquare Weights Method

Regulated Telescopic OTA Optimization for Mobile WiMAX Applications. Nano CMOS OTA Performance Prediction Through Bisquare Weights Method

A Novel Design of Low-Voltage VDIBA and Filter Application

A Novel Low Voltage Low Power OTA Based on Level Shifter Current Mirror

Contact Info

Product

Resources

About