What is need for level shifter in operational amplifier?
Answers from top 10 papers
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| Papers (10) | Insight |
|---|---|
| Simulation results demonstrate that the level shifter is able to perform voltage level shifting with low leakage for both low to high, as well as high to low voltage level translation. | |
23 Dec 2013 28 Citations | This paper presents a fast and energy-efficient current mirror based level shifter with wide shifting range from sub-threshold voltage up to I/O voltage. |
03 Nov 2014 29 Citations | An overlapping clamping structure with low parasitic capacitances in combination with a high-speed comparator makes the level shifter also very robust against large coupling currents during high-side transitions as fast as 20 V/ns, verified by measurements. |
01 Nov 2009 34 Citations | The level shifter makes use of MTCMOS design technique which gives more design flexibility, especially in low power systems. |
04 Jan 2008 14 Citations | This paper examines the performance of a conventional voltage level shifter and describes a novel high performance level shifter that is more robust under adapting voltage scaling. |
03 Aug 2010 | In addition, the proposed level shifter realizes a wide operation margin with a lower VDD compared to conventional implementations. |
03 Jan 2006 54 Citations | The simulation results show that the proposed level shifter circuit is able to shift the input signal from 1.2V to 2.5V at maximum frequency of 500MHz. |
03 Jan 2005 32 Citations | Proposed level shifter design makes it possible to apply dual supply voltages at gate level granularity with much less overhead compared to traditional level shifters. |
23 Dec 2013 28 Citations | The measurement results show that the proposed level shifter can convert from 0.21V up to 3.3V with significantly improved delay and power consumption over the existing level shifters. |
| The measurement results also show that the proposed level shifter has good delay scalability with supply voltage scaling and low sensitivity to process and temperature variations. |
Related Questions
How to design a level shifter with differential pair?5 answersA level shifter with a differential pair can be designed by using a pair of differential transistors, a current source, and a pair of loading devices. The pair of differential transistors have first terminals coupled to clock signals, a common terminal, and second terminals for producing setting and resetting signals. The current source provides a bias current between the common terminal and a reference ground. The pair of loading devices, with a common contact and a pair of output contacts, is coupled to a power line and the second terminals, respectively. This design allows for the generation of differential signals and the shifting of voltage levels.
How to design a voltage level shifter with differential pair hemts?5 answersA voltage level shifter with differential pair HEMTs can be designed by using a multi-threshold carbon nanotube FET (CNTFET) based circuit. This circuit is capable of converting the input voltage level from the deep sub-threshold to the above-threshold domain and from the above-threshold to the nominal voltage domain. The proposed circuit exhibits high speed, energy efficiency, and robustness, with an average propagation delay of approximately 63 ps and 32 ps for two different voltage levels, respectively. It also dissipates lesser static power compared to existing circuits based on CNTFET. Additionally, a multiple threshold level shifter (MTLS) can be used to achieve low power dissipation and improve the power delay product (PDP). MTLS incorporates transistors with different threshold voltages within the circuit and can be cascaded with complex circuits.
How to design a gan level shifter?5 answersA GaN level shifter can be designed by using a combination of techniques. One approach is to use a cross-coupled structure with a pull-up module to speed up voltage transitions. Another method involves using a level shifter with a first inverter, a capacitor, and a latch circuit, where the input voltage signal is capacitively coupled to the latch circuit via the capacitor. Additionally, GaN-based half bridge power conversion circuits can employ integrated control, support, and logic functions, with communication between the low side and high side devices facilitated through level shift circuits. Furthermore, a hybrid structure consisting of a Wilson current mirror and cross-coupled level shifter can be used, which addresses voltage drop issues and reduces leakage power. These techniques provide different options for designing GaN level shifters with improved performance and reliability.
How do you define Operational Amplifiers?5 answersOperational amplifiers are linear devices that provide nearly ideal DC amplification. They are commonly used in signal conditioning, filtering, and mathematical operations such as addition, subtraction, integration, and differentiation. Operational amplifiers have a low impedance output referenced to a common ground terminal and are designed to ignore common mode signals. This means that if the same signal is applied to both the inverting and non-inverting inputs, there should be no change in the output.An operational amplifier typically consists of a single-stage amplifier and a current controller. The single-stage amplifier amplifies the input signal using a voltage controlled current source circuit, while the current controller generates a bias voltage input based on the input signal.Another type of operational amplifier activates either a first or a second differential pair of transistors based on the input voltage. Each differential pair is biased with a current that has a constant portion and a temperature-dependent portion, allowing for relatively constant transconductance with temperature. The operational amplifier also includes a trim current source to reduce voltage offset at each output, resulting in a relatively constant voltage offset over a range of input voltages with an unaffected temperature coefficient.An operational amplifier can also serve as an input and/or output interface, with various ports connected to different parts of a transistor. This allows for high-current output and high-voltage constant-current input, addressing the limitations of prior art interface circuits.Additionally, an operational amplifier circuit can include a differential input end, an input stage, and an output stage with a functional circuit. The functional circuit, consisting of transistors, helps reduce overshoot voltage and shorten the stabilization time of the operational amplifier circuit.
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