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2.9.1.1
Typical current profile
Figure 1. 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%
8
LD25 Series PATA Product Manual, Rev. C
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