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64 Threads found on edaboard.com: **Noise And Rms**

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**

why 8 uV/sqrt(Hz)? why not 8 uV/(Hz)?
Due to the nature of electronic **noise**. See:
**and** Equivalent input **noise**=9.23 μV or 20.64 nV/√Hz
why those two the same?
A **noise** b**and**width of 200 kHz links both values, also explained in the above quo

Analog Circuit Design :: 09-13-2016 06:46 :: FvM :: 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.
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I have the **noise** simulation results for a b**and**gap circuit. Am trying to calculate **rms** **noise** over 0.1Hz to 10Hz but not sure if my calculation is correct.
Here is (...)

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 b**and**gap 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 (...)

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 (...)

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 b**and**width 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 (...)

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

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. (...)

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

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

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

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? (...)

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**

. 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 (...)

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

Professional Hardware and Electronics Design :: 03-07-2013 10:01 :: apolama :: Replies: **1** :: Views: **668**

here's one guess --- don't take it as gospel, but it make put you on the right track :
**noise** voltage average is considered to be zero. However **noise** power is not. Thats where the v^2 comes from of course.
However note that its not absolute **noise** power, but rather mean **noise** power. That might imply a (V/2) ^2, (...)

Analog Circuit Design :: 01-18-2013 15:37 :: kripacharya :: Replies: **3** :: Views: **492**

Hello,
My flyback transformer is making a **noise**. **and** its loud that I can here it in the next room. This flyback transformer is a part of smps based on UC3842. with TL431 feedback. I have connected lamp as a load. It glows, but I am not able to measure its voltage, because the digital multimeter shows some r**and**om reading (The meter is (...)

Power Electronics :: 10-16-2012 17:12 :: I_think :: Replies: **8** :: Views: **1295**

IN my lab ,there is a PNA N5247 without options 029, if i want to measure the NF ,i must buy options 029,but i have found that the options 029 is too expensive to me i must find other method to measure the **noise** figure ,there is a N8975A in my lab too, but its maximum frequency is 26.5G ,so i must add blockdown converter ,N8975AZ-K40/K50 is a b

RF, Microwave, Antennas and Optics :: 09-07-2012 09:39 :: eason.RFIC :: Replies: **2** :: Views: **916**

EVM(%) = *100 = *100 = 5%
For Modulation Error Ratio you need the average power of the signal **and** of the **noise**. But MER generally is very close to EVM.

RF, Microwave, Antennas and Optics :: 08-29-2012 06:59 :: vfone :: Replies: **3** :: Views: **1761**

hello!
Does anyone know how to get the **rms** output **noise** **and** input dynamic range
of a transimpedance amplifier using cadence or synopsys?
Please help me. I don't have any idea on how to get it..

Analog Circuit Design :: 03-21-2012 15:24 :: aprilyne :: Replies: **0** :: Views: **909**