Conducted Noise; Voltage Tolerance - Seagate ST1.3 Series Product Manual

2.7.2

Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on
the +3.3 volt line.
Using 3.3-volt power, the drive is expected to operate with a maximum of 70 mV peak-to-peak square-wave
injected noise at up to 20 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
2.7.3

Voltage tolerance

Voltage tolerance (including noise):
3.3V ± 5%
ST1.3 Series Product Manual, Rev. C 9