Seagate ST3450056SS (FDE) Computer Drive User Manual


 
Cheetah 15K.6 SAS Product Manual, Rev. B
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6.2.1 Conducted noise immunity
Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz.
Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power
connector.
6.2.2 Power sequencing
The drive does not require power sequencing. The drive protects against inadvertent writing during power-up
and down.
6.2.3 Current profiles
The +12V and +5V current profiles are shown below in the following figures.
Note: All times and currents are typical. See Tables 12, 14, and 16 for maximum current requirements.
+5V = 250 mV pp from 0 to 100 kHz to 20 MHz.
+12V = 800 mV pp from 100 Hz to 8 KHz.
450 mV pp from 8 KHz to 20 KHz.
250 mV pp from 20 KHz to 5 MHz.