represents the PSD of the noise current generated
in the Mn transistor. Since M1-M8 are biased with a relatively
high current, namely a quarter of the Hall effect device biasing
current, the PSDs of the noise currents of these transistors are
sufficiently large to make M1-M8 the main noise sources of the
whole system, assuming the input differential stage of the amplifier
to be designed for low-noise as explained in [8]. In addition,
since all the transistors are biased with the same current
intensity, the PSDs of the noise currents of all the NMOSs (resp.
PMOSs) are equal. Thus, in the case of an -strips device biased