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• For FB1, which is placed on the power line (as inferred from your net connections), you should choose a ferrite bead with an impedance suitable for filtering out the noise frequencies you expect on the power supply line. The impedance value is frequency-dependent. Typically, for digital circuits with operating frequencies in the MHz range, a ferrite bead with impedance of 600 Ω at 100 MHz is a reasonable starting point. However, the current rating of the bead must also be considered to ensure it can handle the maximum current draw of your ADC and associated circuitry without saturating. A value of 600 Ω at 100 MHz and a current rating of at least 200 mA could work well, assuming your circuit's current draw is under 200 mA.

• FB1: Impedance of 600 Ω at 100 MHz, with a minimum current rating of 200 mA.
• For FB2, assuming it serves a similar purpose on another line, either for another power supply line or a signal line requiring noise suppression (possibly the I2C lines if they are particularly susceptible to noise in your application), the recommendations would be similar. If it's for a signal line, ensuring that the ferrite bead does not heavily dampen the signal itself is crucial, making a bead with a slightly lower impedance value potentially more suitable, especially if the bead is for use on the lower current I2C lines.

• FB2: Impedance of 300 Ω to 600 Ω at 100 MHz, with a minimum current rating of 100 mA, if it's used on signal lines with lower current than the power lines.

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