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how to design a three stage ring oscillator, if only the first stage has a capacitor and the other two stages has no capacitor?how to choose bias current of first stage, capacitor of first stage, W/L of all transistors? for 1M oscillation frequency. is there some design methods or some advice? and how to measure its loop gain?and how to take co
I think you can use same gate drive circuit which is being used for inverter switching. For IGBTD and IGBTD2 use two isolated supplies,and for IGBTD1 and IGBTD3 you can use one supply whose ground is common with Vdc ground.
I tried to simulate just a simple circuit of two inverters in cadence: one inverter from each process. My first issue was the scaling: one process scales units to um and the other doesn't so it is not able to recognize the device size as it is in the correct range for the model!! How do I deal with that?
You can either use a fully differential amplifier with 10:1 resistors or two individual regular OPs, one 5:1 differential amp and one 1:1 inverting amp.
I tried to simulate just a simple circuit of two inverters in cadence: one inverter from each process. My first issue was the scaling: one process scales units to um and the other doesn't so it is not able to recognize the device size as it is in the correct range for the model!! How do I deal with that?
Hi everbody, During last two year I've studied abour active power filter. And I desined a circuit for obtainig harmonics on power system. Now I have design an inverter for injecting harmonics to power system. Anybody help me about this subject? How can I design an inverter? thanks
Fan-out of 4 is a concept in electronics referring to the gate capacitance between two consecutive stages. In recent CMOS processes, it is generally the case that the minimum delay in an inverter chain occurs when each succeeding inverter has a gate capacitance 4 times larger than that of the previous inverter. Since an (...)
Hi,guys in the picture, if Vdd=5V , Vss=-5V; input Vi=?100mV, Vo=?4.5V; When connect two resistors like this, also let Vi=?100mV, how to calc Vo now? Thanks
To operate as an ring-oscillator, the structure must have a gain above unity with 180 additional phase shift. This requires either two integrators or three poles and sufficient gain. So a single inverter would need additional low pass filters no meet the oscillation condition (if the gain would be still high enough then).
Different high speed logic families can work at the GHz range. For example, current mode logic (CML) and dynamic logic. Actually, these two families are used for frequency dividers for PLLs working at multi-GHz frequency.
Could anyone tell me if two inverters could be connected in tandum so that I could get more wattage?.
hi . i need a simulation of a statcom in matlab simulink (using two or three level inverter ) thank you
A digital buffer is always made by two cascaded cmos inverters. I can always see that a shunt feedback resistor is usually connect from the output of the first inverter to its input. I want to know why the shunt resistor is used? What's its purpose?
For an Amp Op a DC gain of 200 is not too much, as most Amp Ops have a gain greater than 10000 in open loop. You can easily obtain this gain of 200 using only one stage, using a non inverter configuration and a negative feedback composed of two resistors. The gain is given by the formula: 1 + Rf/R where Rf is the resistance that connects the
These two questions confused me a lot. Anybody can give me any cue? 1) How to simulate power supply and ground induced noise in vco? The relation with power and ground push gain 2) Performance compared between inverter chain ring oscllator, current-starved inverter ring oscillator and differential delay ring oscillator( (...)
Please Reupload this Doc in two parts. Thanks
Just use an inverter, a crystal and two capacitors. Most of the microcontrollers and DSPs on the market generate their clock signal that way. Attached is an application note from Microchip's Web site (AN588). It shows you the basic circuit, which uses an inverter internal to the microcontroller (figure 9), but you can implement this circuit (...)
normally i use W/L as the size of transistor or inverter... W = width, L = length. so min size means in 65nm technology node, L = 65nm and W is to follow the design rule speicified min width (i forgot this :) if you have two parallel connected transistors and u wan to match with a single inverter, and assume u want the same L, you need (...)
hi, The switch comprises of two TG , an inverter for control and a pulldown transistor. The setup provided to us is, a bias voltage connected to input pin, input voltage source which need to be varied. So is that we should measure current at out and vout at outpin to calculate RON. cheers raags
Hi, No , its not possible. If so XOR can be used as inverter so the combination of AND and XOR can form as a NAND. NAND is a universal gate so if it possibe combinely (AND,XOR) as a Universal gate. We can realise any gate using two Universal gate NAND and NOR , other than these we cant do anything. --Satya.A