A high-slew rate rail-to-rail operational amplifier by flipped voltage followers

Zhang, Shu-Hang; Feng, Yucheng; Shiau, Miin-Shyue; Wan, Qi-Ming; Liu, Don‐Gey

doi:10.1109/asicon.2015.7516984

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…The response speed is also one of the crucial indicators used to measure the quality of an op-amp. For the analysis of speed characteristics, two commonly used performance indicators are settling time and slew rate [14]. The setup time reflects how fast the op-amp processes the signal.…”

Section: Response Speed Analysismentioning

confidence: 99%

A Low-Voltage, Ultra-Low-Power, High-Gain Operational Amplifier Design for Portable Wearable Devices

Bai

2021

Electronics

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Based on the SMIC 0.13 um CMOS technology, this paper uses a 0.8 V supply voltage to design a low-voltage, ultra-low-power, high-gain, two-stage, fully differential operational amplifier. Through the simulation analysis, when the supply voltage is 0.8 V, the design circuit meets the ultra-low power consumption and also has the characteristic of high gain. The five-tube, fully differential, and common-source amplifier circuits provide the operational amplifier with high gain and large swing. Unlike the traditional common-mode feedback, this paper uses the output of the common-mode feedback as the bias voltage of the five-tube operational transconductance amplifier load, which reduces the design cost of the circuit; the structure involves self-cascoding composite MOS, which makes the common-mode feedback loop more sensitive. The frequency compensation circuit adopts Miller compensation technology with zero-pole separation, which increases the stability of the circuit. The input of the circuit uses the current mirror. A small reference current is chosen to reduce power consumption. A detailed performance simulation analysis of this operational amplifier circuit is carried out on the Cadence spectre platform. The open-loop gain of this operational amplifier is 74.1 dB, the phase margin is 61°, the output swing is 0.7 V, the common-mode rejection ratio is 109 dB, and the static power consumption is only 11.2 uW.

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Section: Response Speed Analysismentioning

confidence: 99%

A Low-Voltage, Ultra-Low-Power, High-Gain Operational Amplifier Design for Portable Wearable Devices

Bai

2021

Electronics

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“…The FVF is a voltage follower cell with improved characteristics using feedback that decreases the output resistance and increases the bandwidth. It is widely used for driving large capacitive loads in several analogue integrated circuits such as amplifiers [3][4][5][6], differential pairs [7], filters [8], adders [9], multipliers [10,11], low-dropout regulators [12][13][14][15][16], current comparators [17], current conveyors [18], current mirrors [19], current sensors [20], etc. However, the conventional FVF cell has limited input/output swing and asymmetrical slew rate (class A operation) [21,22].…”

Section: Introductionmentioning

confidence: 99%

Class‐AB level shifted flipped voltage follower cell using bulk‐driven technique

Jindal

Pandey

2018

IET Circuits, Devices & Systems

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In this study, a novel level shifted version of flipped voltage follower (FVF) cell, which provides efficient class-AB operation, is presented. The level shifter is used to increase the swing of the FVF cell. In the proposed circuit, a bulk-driven metal-oxide-semiconductor field effect transistor is used as a current source to improve the sourcing capability and symmetrical slew rate for the class-AB operation. The circuit has a high-input/-output swing of 1.01 V/0.80 V, wide bandwidth of 751 MHz and low-output resistance of 107 Ω. The proposed circuit has been designed and simulated in a Cadence Virtuoso Analog Design Environment using BSIM3v3 180 nm complementary metal-oxide-semiconductor technology. The post-layout simulation results have also been presented to demonstrate the performance of the proposed circuit.

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Improving the Electrical Characteristics of Measuring Devices Based on Rail-to-Rail Operational Amplifiers

Sergeev

Suvorov²

2018

Meas Tech

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A high-slew rate rail-to-rail operational amplifier by flipped voltage followers

Cited by 6 publications

References 4 publications

A Low-Voltage, Ultra-Low-Power, High-Gain Operational Amplifier Design for Portable Wearable Devices

A Low-Voltage, Ultra-Low-Power, High-Gain Operational Amplifier Design for Portable Wearable Devices

Class‐AB level shifted flipped voltage follower cell using bulk‐driven technique

Improving the Electrical Characteristics of Measuring Devices Based on Rail-to-Rail Operational Amplifiers

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