Variable Gain Differential Low Noise Power Amplifier in 28-nm FD-SOI

This study presents an inductance capacitance (LC) phase-locked loop (PLL) with a dual voltage-controlled oscillator (VCO) and a noise-reduced low-dropout (LDO) regulator, which was used in four-lane multiprotocol serial link applications. The dual VCO architecture can increase the total frequency-tuning range to ensure that the LC PLL achieves multiprotocol serial link coverage from 8 to 12.5 Gbps. Two switch capacitor array-based LC VCOs have a large frequency-tuning range and small VCO gain. The noise-reduced LDO regulator provides a very low-noise power supply to the VCO. The active area occupied by the proposed LC PLL in UMC 28-nm 1P10M complementary metal–oxide–semiconductor (CMOS) technology is 0.25 mm2. The phase noise of the VCO at 1 MHz is −108.1 dBc/Hz. The power consumption of the LC PLL with a 1.8-V supply is 16.5 mW.

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Design and implementation of multi-octave low-noise power amplifier (LNPA) using HIFET configuration

2012 Asia Pacific Microwave Conference Proceedings ◽

10.1109/apmc.2012.6421790 ◽

2012 ◽

Cited By ~ 2

Author(s):

Che-Yang Chiang ◽

Heng-Tung Hsu

Keyword(s):

Power Amplifier ◽

Low Noise ◽

Noise Power ◽

Design And Implementation

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A High-Voltage and Low-Noise Power Amplifier for Driving Piezoelectric Stack Actuators

Sensors ◽

10.3390/s20226528 ◽

2020 ◽

Vol 20 (22) ◽

pp. 6528

Author(s):

Lisong Xu ◽

Hongwen Li ◽

Pengzhi Li ◽

Chuan Ge

Keyword(s):

Feedback Control ◽

Power Amplifier ◽

High Voltage ◽

Operational Amplifier ◽

High Performance ◽

Low Cost ◽

Low Noise ◽

Noise Power ◽

Novel Structure ◽

Voltage Feedback

In this paper, based on the principles of general operational amplifiers, a high-voltage operational amplifier is developed. Considering the influences of piezoelectric stack actuators on the circuit, a novel structure using the high-voltage operational amplifier as a noninverting amplifier is proposed. Because of the simple circuit principles and the voltage feedback control structure, the proposed power amplifier has the advantages of low noise and small size, and it can be realized by discrete electric elements easily. In the application of precision positioning, a power amplifier using the proposed circuit principles for driving piezoelectric stack actuators is designed, simulated, and tested. The simulated results show that the proposed power amplifier could conform to the theory of the circuit. The experimental results show that the designed power amplifier conforms to the simulation, the bandwidth of the power amplifier is about 57 kHz, and the ripple of the power amplifier is less than 2 mV. Furthermore, the output of the proposed power amplifier maintains the same type of wave within in a large range of frequency, while the input is the sinusoidal or square wave, and the resolution of the mechanism which the power amplifier is applied in is about 4.5 nm. By selecting the critical electronic elements and using feedback control, the proposed circuit structure is able to realize a low-cost and high-performance power amplifier to drive piezoelectric stack actuators flexibly, which is the novel work of the paper.

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