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Hi all, is this method is valid for calculating n from week to strong inversion? or is there any alternate i need to calculate n(slope factor) to find technology current. Thanks
When you trace an Id-Vg @ Vd=contant courve of a MOSTand you draw it on a logarithmic vertical scale, you will notice that, for Vg < Vth, the Id current (in the log scale) increases linearly with Vg. The slope of this section of the couve is called the WI slope or, more exactly, the inverse slope. It tells you how ideal your transistor (...)
Some fabs give Subthreshold slope S rather than Subthreshold slope factor n. You can see here how to convert between the two:
Hello All, I am trying to extract the source-bulk junction capacitance using eldo. The model I have is BSIM3v3 and the confusion is as follows: There are two capacitances between the source and bulk 1. Intrinsic CSB which is due to the bulk charge. 2. Extrinsic CSB which is due to the junction between the source and bulk How do I sepa
The key parameter for EKV is 'n', the slope factor. Our foundry gives us S, the subthreshold slope, which can be converted to n by S=ln(10)*n*Ut. The rest of the parameters for calculating Ispec are process parameters which are easily obtained from the model card. Then I size my devices according to weak and strong inversion I-V equations. (...)
simulate ids-vgs curve, plot ids on log scale, measure the change in vgs for current to increase by one decade, this is called subthreshold slope S. the relation between S and n is \dfrac{1}{S}=\ln 10 \times n \times U_t. typical value for S is maybe between 80 mV and 90 mV in 130 nm process.
The "n" you are describing is not subthreshold slope parameter of EKV model, see pg 194. n=1 Junction emission coefficient. bsim model does not calculate slope parameter, specific current, etc. that you are looking for, they must be approximated/derived from given
The datasheets are specifying a resistance range for a specific illumination, mostly 10 lux. The variation is typically +/- 50%. Furthermore they specify a logarithmitic slope factor γ, so you are able to calculate the resistance at different luminance levels. You won't get more accurate data, because the nature of these sensors apparently doe
Hi I'm confused with NMOS and PMOS transistors in subthreshold region. Which of them has the higher current value, for a given value of Vgs? Which of them has the higher subthreshold slope? Which of them has the higher value of threshold voltage? I'm working with 90nm Tech. Rosa
I would suggest that you try to extract the Kp and Kn instead, you will probably also need the slope factor n. Try to extract Kp,Kn for different values of W/L and see how they vary. Perhaps you could use an average value of the results for the Kp,Kn I would also be very reserved with the hand calculated results if you intend to use the quadratic
Hi, can anyone help me out in how to measure the FINFET's sub-threshold slope factor using HSPICE. I need the command used to find the derivative of log(Id).
These are ordinary quarter wave transmission lines. They are sometimes made slightly shorter so that the capacitor between the open end and ground can change the resonant frequency. The reactance slope is determined by the loaded Q. You control this with the source and load impedance.
Hello, integration period is actually related to signal frequency, cause i supresses frequencies with a period equal to integration period and it's integer mutiples. It has been often used with 100 ms or 20 respectively 16.7 ms period to suppress mains interferences. Cause it needs a time-to-digital converter with sufficient relative solution, i
To shady205, It is may be too late, but I just found your question. There is one easy way to determine the Q-factor of your filter. It is equal to ABS(tan(phi)), where phi is the phase angle. By another words Q-factor is the slope of filter?s phase characteristic. Do not forget that phase must be in radians and frequency in Hertz. To (...)
Dear all: I'd like to consult a question about reactance slope parameter. I do not understant how to define the parameter. As we know, reactance slope parameter x=ωo/2*(dX(ω)/dω) when ω=ωo. Based on the classical microwave passive book written by Rizzi. It can be treated as Energy stored in the resonant circu
Hi From Pozar, I know that Q=beta/(2*alpha) = pi/(4*alpha*length); ---valid for short circuited transmision lines and from resonant theory (parallel resoant circuit) Q= slope(imag) * fo /(2R). I am using ADS, I use 2 port simulation to extract alpha and beta..and find Q?? or use one port simualtion to extract Q?? Which one is valid??
Nominal Resolution of dual-slope ADC is usually referring to the resolution of the time measurement of de-integration phase and is simply given by your hardware design. Usable resolution is a matter of various error terms and more difficult to determine. Ponts to consider are - integration capacitor loss factor - comparator response time
Hi I want to use an OTA integrator in a dual slope ADC. But since the input signal is large signal wont it change the gm for different levels? Thanks Salil
Hello, In the attached LTspice sim of a full bridge smps, we see that magnetising current in the secondary of the current transformer has a negative slope. This seems counter intuitive. But is the wisdom involved in its analysis, concerning the fact that the field due to the secondary is the opposite of that due to the primary coil, and so the m
where to download power factor meter diy resource? help me, thank you
I need good article( info) about power factor corrector, basics, principles of operation and so on. Thanks in advance.
i have came across the Q factor for Inductor. 1.)how about finding the Varactor Q and value? The varactor is either pn-diod or mos-cap. 2.)how the measure the s-parameters of the varactor?
Power factor Corrector (PFC) program is a design aid for power factor corrector applications. Even though different topologies can be realised for power factor correction, this tool supports the boost topology. The boost inductor located between the mains bridge and the switch, minimises the noise generated at the input and therefore (...)
how to simulate quality factor of an spiral inductor in ADS?please
hi all do any one know any links for a project of making a power factor correction using the hc08 thanks for help
Hi, Maybe this is novice question, but i'm MCU system designer, and i need information about power factor corrector devices. Well i saw in one PSU chip L6561 that is driving MOSFET and it is used as switching PSU that works from 85-250 VAC. But i can not understand where is power factor corrected with this device. It is used as switching PSU contr
This is a 3-layer spiral inductor with copper conductor and polyimide dielectric . My question is : How is the quality factor when I put this spiral inducor in top layer or in bottom layer ???
Does anyone have information about power factor correction and inverters?
Is NF is the output noise of our design?? How can we have an analysis on NF by generating a NF waveform? .print noise onoise(db) ---> is this the syntax for NF?? :(
ti and onsemi website have application note about slope control of current mode smps.
are Dissipation factor and loss tagent the same ??
Dear All: Today I use report_lib to read some lib information. I am not sure what does the slope, fanout->length mean. Such as: Name : 5KGATES Location : ssc_core Resistance : 0.00012 Capacitance : 0.000266 Area : 0.5 slope : 50.9049 Fanout Length Points Average Cap Std Dev
Hi everybody, i am simulating some antennas for milimeterwave application. Sometimes the simulation was aborted due to unstable state and the logfile suggests a smaller stability factor for the transient solver or a smaller PBA fill limit. The simulation runs when i changed the stabily factor for timestep in the special settings to 0.7 (defau
Hi all, I am simulating tri-band planar antenna in which S11 of all resonant frequency is only around -3.5dB, I would like to have some advice on what major factor to affect antenna efficiency. Best Regards, Le :o
How do you determine the scaling factor in a PI controller? Lets talk over numbers. Say we have Kd and Ki, proportional and integral multipliers respectively. Say they can change between 0-100. What we control is the pwm duty cycle (shortly pwm) which can change between 0-500. And there is an error term which can be between 0-1000. Using these val
hi all.what differ between the stability factor and stability factor measurment at ADS2003 (stability factor >1 and measured one less one) what i talk care ? regards
dear all: what is the ideality factor of the diode? thanks
hi,i design with stability factor>1 but measures one (.9-1) is there is oscillation pls reply regards
Hi what quality factor i need to design a BPF with Δf bandwidth and IR dB insertion loss is there any equation explain the relationship between these parameters and the degree of the filter as well Cheers
Sorry...all this magnetisation characteristics are given under the topic DC Shunt Generator... In DC shunt generator the field and armature circuit are in parallel. Now say E is the generated armature EMF. E=KΦω, where Φ is field flux and ω is generator speed or turbine speed and K is a proportionali
Hi all, Does anyone know what scaling factor I need to keep when I migrate 0.5um technology cell library to 0.33um technology? Can anyone suggest me where to start? Thanks and appreciate your opinion. KC
the slope for 3rd harmonic is 1:3 for any condition? for example : substrate , temp or power?
I want to design a power factor corrector for households, are there any IC's that supports correction for 220V of supply? Btw this is not an ordinary power factor correction for switching power supply.
Hi there, i have designed a Butterworth low pass filter, but i don't know how to measure Q factor from simulation to comfirm my design. Can u guyz help me out? Thanks~!!!
For current mode DC-DC design, a artificial ramp is added to inductor current signal to aviod sub-harmonic oscillation. The slope compensation is chosen: 1/2*Mlslope. Ma is the slope of artificial ramp.
Could anyone suggest reading material for slope compensation
Could someone please guide me to amterial on slope compensation
Try this first: You can also go to the TI website and search for "slope compensation". There should be lots of material.
Hello! Can anyone give me a hint about this : My graphics card is working only with 2x agp factor(instead of 4x)! Motherboard Gigabyte 7DXE: 4x Graph. card Asus 9180SE: 8x, latest drivers. Now this could be interesting : in the past it used to work with 4x factor, until my power switching source exploded. Could this latter mess be the expl
When I finished the design of varactor, inductor and cross-coupled nmos pair, how to simulate the composite quality factor of the tank?