1/f noise of the ADM7150/ADM7151 be reduced?

Document created by analog-archivist Employee on Feb 23, 2016
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How can the 1/f noise of the ADM7150/ADM7151 be reduced?

 

The BYP capacitor value can be increased to reduce the noise below 1 kHz at the
expense of increasing the start-up time of the LDO. Very large values of CBYP
significantly reduce the noise below 10 Hz. Tantalum capacitors are recommended
for capacitors larger than approximately 33 µF. A 1 μF ceramic capacitor in
parallel with the larger tantalum capacitor is required to retain good noise
performance at higher frequencies. Solid tantalum capacitors are less prone to
microphonic noise issues.

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