DB35.3 Series SATA/PATA Product Manual, Rev. F
9
2.1.7.1.1
Representative current profile
Figure 1
Representative 5V startup and operation current profile
Figure 2
Representative 12V startup and operation current profile
2.1.7.2
Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on
the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.
• Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave
injected noise at up to 10 MHz.
• 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.
2.1.7.3
Voltage tolerance
Voltage tolerance (including noise):
5V ± 5%
12V ± 10%
