A 1GSPS Open-Loop Track and Hold Circuit with 68dB SNDR in 65nm CMOS

2019 ◽  
Author(s):  
Miao Huo ◽  
Zongmin Wang ◽  
Tieliang Zhang ◽  
Song Yang ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Open Loop ◽  
Loop Track

A 62dB SFDR, 500MSPS, 15mW Open-Loop Track-and-Hold Circuit

2006 NORCHIP ◽  
2006 ◽  
Author(s):  
Pieter Harpe ◽  
Athon Zanikopoulos ◽  
Hans Hegt ◽  
Arthur van Roermund
Keyword(s):  
Open Loop ◽  
Loop Track

A High Speed Open-Loop Track/Hold Circuit in CMOS Process

2013 ◽  
Vol 756-759 ◽  
pp. 4302-4305
Author(s):  
Zheng Ping Zhang ◽  
Yong Lu Wang ◽  
Ming Liu
Keyword(s):  
High Speed ◽  
Dynamic Range ◽  
Sampling Rate ◽  
Open Loop ◽  
Cmos Process ◽  
High Sampling ◽  
High Sampling Rate ◽  
Interleaved Structure ◽  
Offset Compensation ◽  
Loop Track

A high speed open-loop track/hold circuit in 0.18um CMOS process is presented. Open-loop and differential architecture are adopted to obtain high bandwidth and high speed;time-interleaved structure is used to reach a high sampling rate;source negative feedback and offset compensation are used to improve the linearity of the circuit.Simulation results show that with 396.875MHz input, 1.6GSPS sampling rate, driving the pre-amplifier of ADC, the thack/hold circuits SFDR(spurious-free dynamic range) is 75.8dB,satisfying the demand of 12 bits ADC.The circuit features high sampling rate,wide bandwidth,high SFDR and universal.

Set of open-loop block-diagonalizers of transfer matrices

1989 ◽  
Vol 49 (1) ◽  
pp. 161-168
Author(s):  
A. Bülent Özgü Ler ◽  
Vasfi Eldem
Keyword(s):  
Open Loop ◽  
Transfer Matrices

On closed-loop equilibrium strategies for mean-field stochastic linear quadratic problems

2020 ◽  
Vol 26 ◽  
pp. 41
Author(s):  
Tianxiao Wang
Keyword(s):  
Optimal Control ◽  
Closed Loop ◽  
Optimal Control Problems ◽  
Mean Field ◽  
Open Loop ◽  
Time Inconsistency ◽  
Control Problems ◽  
Linear Quadratic ◽  
Linear Quadratic Optimal Control ◽  
Equilibrium Strategies

This article is concerned with linear quadratic optimal control problems of mean-field stochastic differential equations (MF-SDE) with deterministic coefficients. To treat the time inconsistency of the optimal control problems, linear closed-loop equilibrium strategies are introduced and characterized by variational approach. Our developed methodology drops the delicate convergence procedures in Yong [Trans. Amer. Math. Soc. 369 (2017) 5467–5523]. When the MF-SDE reduces to SDE, our Riccati system coincides with the analogue in Yong [Trans. Amer. Math. Soc. 369 (2017) 5467–5523]. However, these two systems are in general different from each other due to the conditional mean-field terms in the MF-SDE. Eventually, the comparisons with pre-committed optimal strategies, open-loop equilibrium strategies are given in details.

Comparison of Dc-Dc SEPIC, CUK and Flyback Converters Based LED Drivers

2020 ◽  
pp. 99-107
Author(s):  
Erdal Sehirli
Keyword(s):  
Integrated Circuit ◽  
Closed Loop ◽  
Input Voltage ◽  
Open Loop ◽  
Current Sensor ◽  
Switching Frequency ◽  
Led Driver ◽  
Advantages And Disadvantages ◽  
Led Drivers ◽  
Conduction Mode

This paper presents the comparison of LED driver topologies that include SEPIC, CUK and FLYBACK DC-DC converters. Both topologies are designed for 8W power and operated in discontinuous conduction mode (DCM) with 88 kHz switching frequency. Furthermore, inductors of SEPIC and CUK converters are wounded as coupled. Applications are realized by using SG3524 integrated circuit for open loop and PIC16F877 microcontroller for closed loop. Besides, ACS712 current sensor used to limit maximum LED current for closed loop applications. Finally, SEPIC, CUK and FLYBACK DC-DC LED drivers are compared with respect to LED current, LED voltage, input voltage and current. Also, advantages and disadvantages of all topologies are concluded.

Highly Linear Open-Loop Amplifiers Using Nonlinearity Cancellation and Gain Adapting Techniques

2016 ◽  
Vol E99.C (6) ◽  
pp. 641-650
Author(s):  
Lilan YU ◽  
Masaya MIYAHARA ◽  
Akira MATSUZAWA
Keyword(s):  
Open Loop
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