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10
ST1 Series Product Manual, Rev. A
2.9.2
Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on
the +5 volt line.
Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave
injected noise at up to 20 MHz.
Using 3.3-volt power, the drive is expected to operate with a maximum of 70 mV peak-to-peak square-wave
injected noise at up to 20 MHz.
Note.
Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
2.9.3
Voltage tolerance
Voltage tolerance (including noise):
5.0V ± 10%
3.3V ± 5%
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