Other Parts Discussed in Thread: OPA1637,
Hello all,
I am trying to get my THP210 design working. For some reason I get poor THD+N values measured with an Audio Precision analyzer.
At first I had a gain configuration of 0,135. Assuming…
Hi all,
I need your help to understand how to reach the THD performances reported in OPA690 datasheet. Below the application circuit:
The input signal is 1Vpp, sinewave, 1kHz; the spectrum analyser input impedance is 50ohm. I get…
Hi! I have a question about harmonic distorion of differential amplifier.
There is a harmonic distortion frequency dependence of LMH5401. It starts from 10 Meg. Can i be sure, that harmonic distorion at very low frequency (100 Hz,…
This technical article was updated on July 23, 2020.
Today, we continue our series on successive approximation register (SAR) analog-to-digital converters (ADCs) input types. Previously, I reviewed input considerations and pnoise performance comparis…
I think this is harmonic distortion from above picture.
So you need to check with sine wave by reference signal during voice recording.
And then please attach the picture of time domain not frequency domain by x axis.
IMO, the result is that sine wave…
So, Im wondering what direction this will take. Im leaning the MSP430 & embedded systems partially for metering systems. NIST/IEEE are now setting standards. My feeling is that the 430 and zigbee will be front and center as well as the 320 dsp. What are…
I am simulating the reference schematic available on the OPA211 specifications webpage. The simulation was in Tina version: 7.0.30.267. I changed the gain to 2 by setting Rg=Rf=11k. I changed the function generator…
Thanks for the reply. I have a few more questions regarding your explanation. The BW that you used is 22.5MHz even though I am looking at random spikes in Fourier spectrum within a band of 10Hz to 2kHz, much smaller than 22.5MHz.
In any case, to avoid…
