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Rms Input Noise

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25 Threads found on Rms Input Noise
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 (...)
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?
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 (...)
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 (...)
how to build a circuit to measure rms value of the sine wave signal with frequencies vaying from 1 Hz to 1 KHz. the voltages is of range +/-20 mv(if it is unamplified), +/- 10 V if it is amplified. Thanks in advance.
. 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
Just quoting model numbers without even a manufacturers name is of no use to most members of this forum. What you need is a CW signal source with a calibrated attenuator, a receiver with an IF output and a rms power meter that is accurate at IF and an input termination resistor. So what have you not got? Frank
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..
If the input signal aren't guaranteed to have a clean sine waveform (they hardly will), a true rms measurement is required. It can be only performed by summing the squares. For the rms measurement, filtering of the input signals doesn't make much lsense, unless you have high frequency noise that you want (...)
hi all, if the input rms noise of an amplifier is AVrms, the bandwidth is BHz, and the input-referred noise is CV/rtHz. Assuming the noise is flat. 1. What's the relation between A and C? does C equal A/rtB? 2. How to convert A (or C) to decibal? is NF=10log(1+C/4kTRs) or (...)
In general it will depend on the application but good tests include: - minimum load for stability - phase margin - gain and GBW - slew rate OR settling time to a specific level and accuracy - input common range - PSRR - rms noise Let us know if you need specific ideas
"The effective noise bandwidth (ENB) is a property for a filter circuit and not for an opamp alone." Then, how can I calculate the ENB of op-amp? how can I simulate the input referred rms noise of op-amp in h-spice?
How to create Test Bench to find input referred noise of any block for example inverter/Dff. How to find rms noise of the circuit? Please comment..
There is a noise generator in analogLib.. You may set the rms noise voltage in properties menu..
Hi, I am designing a transmitter and I want to control jitter measurement by measuring noise on the input signal. Can I request anyone to please help and give me a code, as to how can I measure noise in the input signal for each clock period as I want to get Average voltage and rms voltage for each (...)
In Gray's book, the feedback has no effect on the circuit equivalent input noise. But my question is, does the feedback have no effect on the circuit equivalent input noise rms value or the equivalent input noise spectral density? i.e. for a circuit with the feedback, does (...)
Hi, If you are given receiver sensitivity in dBm, you can't really get the gain of the TIA. From the receiver sensitivity, you can get how much the current amplitute and dc value. If you are given input noise current and output rms voltage noise, then only u can calculate the TIA gain. I suggest you to study on the Bezhad (...)
Hi, I'm desigining a Transimpedance amplifier with the bandpass response, which means the differential output of the TIA is feedback to the input of the TIA for DC cancellation purpose. My question is, how do I calculate input referred rms noise of the TIA in Cadence. I understand that for the forward TIA design (LPF (...)
how to measure the input-referred rms noise voltage of ADC? for example, the input-referred rms noise voltage of pipeline ADC. thanks.
an actual adc will produce additional codes outside the main bin for any dc input value ,due to the presence of noise, as show in following pic. this histogram is some like gaussian distribution. my question is how to get rms noise from this histogram, then get the effective bit of ADC thanks:D