Seagate ST93015A ユーザーズマニュアル
Momentus 42 Product Manual, Rev. A
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.
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.
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