Seagate ST94811A, Product Manual

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Momentus Product Manual, Rev. E 9
2.9.1.1 Typical current profile
Figure 2. Typical 5V startup and operation current profile
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 10 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):
5V
±
5%
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
0.0
0.2
0.4
0.6
0.8
1.0
Amps
Seconds
+5 Volt Current during spindle start — Typical Amperes
1.2
4.5