The third main parameter to consider when dealing with sensors in general, and gyroscopes in particular, is the Rate Noise Density. This parameter is usually expressed in the form of spectral density, allowing the user to get the actual value of the noise depending on the low-pass filter applied to the output. The formula shows that by multiplying noise density by the square root of the bandwidth, the RMS value expressed in degrees per second can be immediately retrieved. The table in the bottom right corner can be used to convert this value to the related peak-to-peak level. Low noise level makes ST’s gyroscopes well suited for applications requiring high-resolution angular rate sensing.