From ecea8b5aa3f5f103d66b9705ca0666a4e3d7d568 Mon Sep 17 00:00:00 2001 From: Kevin Date: Sat, 28 Oct 2023 09:29:42 -0600 Subject: [PATCH] Update qwiic-sensors.md --- .../adafruit/qwiic-sensors/qwiic-sensors.md | 17 ----------------- 1 file changed, 17 deletions(-) diff --git a/notebook/adafruit/qwiic-sensors/qwiic-sensors.md b/notebook/adafruit/qwiic-sensors/qwiic-sensors.md index 605c161..7ca8539 100644 --- a/notebook/adafruit/qwiic-sensors/qwiic-sensors.md +++ b/notebook/adafruit/qwiic-sensors/qwiic-sensors.md @@ -126,23 +126,6 @@ where [misc1]: https://cdn-shop.adafruit.com/datasheets/ht16K33v110.pdf [misc2]: https://cdn-learn.adafruit.com/assets/assets/000/093/906/original/st25dv04k.pdf?1596828496 -## Terms - -Power Spectral Density: - -- Power: mean-squared value -- Spectral: distribution of a signal over a spectrum of frequency -- Density: mangitude of the PSD is normalized to a single Hz bandwidth - -$$ -RMS_{noise} = NoiseDensity \sqrt{BW * filter} -$$ - -where $bandwidth$ is half the Output Data Rate (ODR), $filter$ is a low pass filter having one of the following values: - -- 1.57(1st order) -- 1.11 (2nd order) -- 1.05(3rd order) ## Wiring