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## SRAM write noise margin (WNM) procedure in cadence

Hai I am trying to get WNM of SRAM. I am following the procedure given in the book "Robust SRAM designs and analysis". I have attached the WNM graph (Fig1_WNM_book) from this book. My doubt is: As per the procedure, BL line is connected to Vdd and BLB line is connected to gnd. The voltage at source node Q is sweeping while monitoring QB an

## [Moved]: Noise Analysis of Pixel Circuit in Cadence

Hello all, I am currently designing some pixel circuits for my bachelor thesis and am trying to analyse the noise of such a pixel using cadence. I have a couple of questions regarding this aspect as I am new to this.. Also please consider that the pixel is a black box (made up of a photodiode and transistors) whose input ports are some logic

## Transient noise analysis (Cadence Virtuoso)

I don't know what simulator you use in cadence Virtuoso. We can use various simulators from cadence Virtuoso. Invoke "Dynamic Parameter Ability" for Transient Analysis, if you use cadence Spectre. param=isnoisy param_vec=

## [Moved]: Noise in RMS and PSRR calculation in Cadence

Please can anyone one help me in calculating the noise in VRMS. I have got the noise in cadence in uV/sqrtHz now I want to convert the uV/sqrtHz in Vrms. I have the noise result attached. Do I have to use calculator if yes the how? I want to calculate PSRR in cadence of an OTA. Can any one help me step (...)

## [Moved]: Divider pnoise in the PLL

Hi, i want to get the overall pnoise of the PLL in Matlab, so i firstly stimulus the pnoise of several components in the cadence ADE, the simulation pnoise of Divider is about -120~-130dBc/Hz, and the noise power spectral density is about -160~-170dB/sqrt(Hz), i want to know is it normal? if it's correct, (...)

Hi everyone, I am designing an offset cancellation circuit and I want to do a noise simulation. My goal is to do the simulation using the circuit without the offset cancellation technique and then using the same topology using the offset cancellation technique and compare both noises. I have tried the noise analysis, but I don't know (...)

## noise and dynamic range analysis an calculation

Need help in understanding some things about noise and dynamic range analysis. 1) We know THD (total harmonic distortion) and THD+N (THD+noise), which is THD measured with transient noise ON in cadence. Am I correct? 2) For a given input frequency and amplitude, SINAD is equal to THD + N, provided the bandwidth for the (...)

## A simulator to simulate a LNA in an OOK transreceiver

Hi, Well I have to design a low noise amplifier for ultra or narrow wideband applications. which simulator will you recommend considering I have to use multi gate mosfets. I don't have cadence or mentor graphics license so, Which is best free simulator out there? technology for LNA is 32nm since it will be integrated

## [Moved]: Noise Analysis of a Transmission gate in cadence

I have made a simple transmission gate with one input (for signal with sinusiodal voltage input V0), a control (logic 0/1 to make switch On /OFF, with dc voltgae) and an output across a resistor. I want to do the noise analysis of this circuit. 1) Since it is not a differential circuit, how can i have positive and negative output nodes, for outpu

## CS Differential LNA simulation problem !

generally the noise figure of differential LNA is lower than single ended.Wrong. NF of differential amplifier is always larger since noises are uncorrelated. Do u think baluns add noise to circuit?If you use "analogLib/ideal_balun" in cadence dfII, it is noiseless.

## S Parameter in spectre and ADS

Here all, here i am simulation circuit with 3 port and in virtuoso while doing SP analysis i am getting total NF . But if same circuit simulated in cadence then it will show NF(1), NF(2), NF(3) can anybody tell me what is meaning of this and which value from ads for NF is correct

## Simulate the jitter of a ring oscillator in Cadence

Hi, i want to simulate the jitter/phase noise of my ring oscillator. The oscillator frequency is about 2 GHz. Actual i just simulated the transient behaviour. I took a look at tutorials, but I'm not sure with all that settings for correct noise simulation. My idea was, to simulate 'transient noise' in transient simulation and (...)

## how to simulate the input refered noise of an integrator in cadence/spectre

As the figure shows, do the noise simulation, but the output and negative input node of the amplifier is not "directly" biased, how to get the input referred noise data from simulation? Thanks 129361

## Noise analysis in by cadence virtuso

I am trying to get the noise ****

## An issue with the noise summary tool of cadence

Is "noise summary" tool reliable?It is reliable in most cases. Show me analysis statement. I don't know what simulator you use. However I recommend you to set "augmented=off", if you use Autonomous-Shooting-PSS/Pnoise in cadence Spectre. Try the followings, if you use cadence Spectre. (1) Autonomous-HB-PSS/P

There is no tool whose name is cadence. Even if you use cadence ADE, we can use various vendor's simulators such as Synopsys HSPICE, Mentor Eldo, Keysight ADS, Keysight GoldenGate, cadence Spectre, etc. Always describe correct tool's name and vendor's name which you use as tool or simulator.

## noise file for current source cadence

Hi i want to add noise to the input current source of my multiplier circuit and i want to run the DC analysis. Can anyone tell me can is there any noise file already written that i can obtain from cadence or do it have to write a file of my own and include the txt file. Also once obtained can anyone pls tell me how to include it. In the (...)

## SRAM Write Noise Margin Butterfly curve in cadence

please help I need to draw butterfly for Write NM for SRAM cell I cut down the inverter into two halves to get the VTC for both INVA and INVB as it is shown in the figure, the result should be as shown in the graph but I got different result, the green curve is wrong while the red one is right, What is the problem with this curve ?? Please

## generate stochastic,crosstalk noise in cadence

hello, I want to add a stochastic noise to vsource, such as gauss noise. i note that there is a "noise file" field in properies of vsource. (1) Could I use this "noise file" to add a stochastic noise. how to write this " noise file" (2) Is there any other methods adding stochastic (...)

## Calculation of random jitter fom phase noise of vco in PLL

I have a 16GHZ pll and div by N is 160. I am trying to calculate random jitter from phase noise of VCO. I TRIED IN cadence by setting noise source type as jitter and then selecting FM jitter or PM jitter. I was wondering how to plot jitter information using above choices I have made in direct plot form. Also, while calculating Random (...)