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105 Threads found on edaboard.com: **Rms Noise**

most spectrum analyzers simply measure the power spectral density of the phase **noise**, and integrated it to show **rms** jitter. On the average, it is an accurate calculation.

RF, Microwave, Antennas and Optics :: 03-01-2017 10:21 :: biff44 :: Replies: **3** :: Views: **479**

Please can anyone one help me in calculating the **noise** in V**rms**. I have got the **noise** in cadence in uV/sqrtHz now I want to convert the uV/sqrtHz in V**rms**. 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 (...)

Analog Circuit Design :: 01-11-2017 06:24 :: simplsoft :: Replies: **0** :: Views: **730**

As for a free-run oscillator, the jitter accumulates over time. The wavescope calculates jitter in a certain time windows. My question is if I want to know the **rms** jitter of a oscillator in a time range of ,maybe 4us , then what the is the frequency range for the integral of phase **noise** in reponse. （mainly, the lower limit of integral）

Analog Circuit Design :: 01-08-2017 08:50 :: Kristya :: Replies: **0** :: Views: **518**

Hi,
I am trying to measure AC **rms** voltage using PIC microcontroller. I have attached the circuit for measurement. I am connecting a 3V step down transformer out to the input of the circuit.The feedback capacitor has been added to reduce the **noise**, but I am getting **noise** if I add this. This is getting smooth after the low pass filtering. (...)

Microcontrollers :: 11-24-2016 13:34 :: archusvijay1 :: Replies: **6** :: Views: **697**

The definition of "plain" **rms** is the square-root of the sum of the squares.
That gives the equivalent power value of the waveform (normally used in signal analysis), which is why the square is used (since power is proportional to the square of the voltage).
It's not the average value.
Does that answer your question?

Analog Circuit Design :: 09-11-2016 00:34 :: crutschow :: Replies: **4** :: Views: **715**

Hi All, would anyone in this forum help me in a **noise** calculation problem? I post this in a different forum but did not get any answers.
------
I have the **noise** simulation results for a bandgap circuit. Am trying to calculate **rms** **noise** over 0.1Hz to 10Hz but not sure if my calculation is correct.
Here is my results. The (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 07-21-2016 02:02 :: bhl3302 :: Replies: **0** :: Views: **56**

Hi All, I have the **noise** simulation results for a bandgap circuit. Am trying to calculate **rms** **noise** over 0.1Hz to 10Hz but not sure if my calculation is correct.
Here is my results. The left figure and the right figure were plotted from the same data. The only difference is that the Y-axis of the right figure is in log-domain.
13

Analog Circuit Design :: 07-13-2016 16:32 :: bhl3302 :: Replies: **0** :: Views: **455**

The power darlington transistors need heatsinks. If the output voltage swing is as high as 8V **rms** then the output power is 8W into 8 ohms and each darlington heats with almost 2W.
The 741 opamp was designed 48 years ago! It is noisy and its slew rate cuts its high level frequencies above only 9kHz. A modern low **noise** audio opamp works perfectly to

Analog Circuit Design :: 05-31-2016 13:11 :: Audioguru :: Replies: **2** :: Views: **366**

Hi Saad,
Say you have the **noise** voltage expressed as εn .
Then the (normalized) power spectral density is εn2 [V2.
The normalized power in a bandwidth B is εn2B [V2
The **rms** voltage is VEF=sqrt(εn2[/SUP

RF, Microwave, Antennas and Optics :: 05-23-2016 21:48 :: zorro :: Replies: **4** :: Views: **582**

First try to define ( by commercial comparison) your expectations in a value for;
-equivalent input **noise** and signal range
-THD
-Output peak power
-**rms** power, and temperature rise from losses.
-Load impedance range vs power
and frequency response deviations
If you can afford to avoid poor choices of ceramic by replacing the double bar non polar

Hobby Circuits and Small Projects Problems :: 05-04-2016 18:33 :: SunnySkyguy :: Replies: **13** :: Views: **919**

hi,
P**rms** = Vds x Ids
P**rms** = **rms** RF output power.

RF, Microwave, Antennas and Optics :: 04-14-2016 16:25 :: pragash :: Replies: **1** :: Views: **400**

See equation for **rms** Period Jitter in attached figure.
How to derive this equation ?
Especially, how is sin() term from ?

RF, Microwave, Antennas and Optics :: 03-11-2016 13:46 :: pancho_hideboo :: Replies: **1** :: Views: **689**

You are looking to design a Window Comparator which requires two Comparators with wired OR output low for detecting UV or OV.
This requires low ripple or **noise** inputs, hysteresis, supply filtering and a good low **noise** reference voltage for comparing the scaled inputs.
Define your spec first using **rms** converted to peak.
UV detect le

Power Electronics :: 12-17-2015 05:55 :: SunnySkyguy :: Replies: **21** :: Views: **1746**

The quantization error produces harmonics which extend well past the nyquist bandwidth of DC to Fs/2. However, all those higher order harmonic must fold back into the nyquist bandwidth and sum together to produce the **rms** **noise**. you can think of this process as FIRST doing QUANTIZATION (which produces **noise** from DC to Higher frequencies than (...)

Analog Circuit Design :: 02-20-2015 01:51 :: Jim cage :: Replies: **6** :: Views: **1668**

gangs,
I am running .**noise** analysis in cadence's spectre. Two methods display the simulation results: method 1. plot equivalent input **noise**. This can be done by: locate spectre simulator menu-->results-->direct plot-->equivalent input **noise**. A figure will pop out. Then go to calculator's **rms** function. The final result is (...)

Analog Integrated Circuit (IC) Design, Layout and Fabrication :: 12-08-2014 02:07 :: hyleeinhit :: Replies: **1** :: Views: **1584**

Hi,
I have designed a front-end readout circuit which consist of a preamplifier and pulse shaper in Mentor Graphics. Now I want a **noise** simulation, from transient **noise** simulation I got the circuit output **rms** **noise** voltage, but how do I know each individual transistor **noise** contribution?
I don't know (...)

Analog Circuit Design :: 08-13-2014 13:46 :: Nurahmad :: Replies: **0** :: Views: **640**

Unless there you don't mind measuring Signal + **noise**, the appropriate method is to convert Peak to **rms** assuming Sine wave and **rms**=Peak/Root(2) or 0.707 x Vp as Audioguru stated.
If you want to eliminate **noise**, then a tracking filter is needed.

Analog Circuit Design :: 07-01-2014 21:04 :: SunnySkyguy :: Replies: **11** :: Views: **1328**

Peak ripple would of course be (Max-min)/2 which is closer to **rms** **noise**, but depends on if your interest is thermal **noise**, clock feedthru or some other **noise** in the signal. Normally if it is fundamental f or 2f , we call it ripple, otherwise just "**noise** p-p" covers all types including transient (...)

Analog Circuit Design :: 05-14-2014 00:32 :: SunnySkyguy :: Replies: **5** :: Views: **1276**

. It depends on your sampling rate. ADC is linear but your detector is not.
Do you want to only track changes in Vac over long term or short term interruptions or do statistics Avearage & deviations ?
Choices:
quasi **rms** with Peak, P-p or rectified average
I would use LPF **noise** filter and rectified average with another LPF.
200Hz LPF before br

Elementary Electronic Questions :: 05-12-2014 03:37 :: SunnySkyguy :: Replies: **3** :: Views: **914**

Standard Deviation=**rms** Value of **noise**

Digital communication :: 10-30-2013 02:42 :: pancho_hideboo :: Replies: **4** :: Views: **635**

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