Figure 1. Typical 5V startup and operation current profile
Figure 2. Typical 12V startup and operation current profile
3.8.2Conducted noise
Input noise ripple is measured at the host system power supply across an equivalent
•Using 12V power, the drive is expected to operate with a maximum of 120mV
•Using 5V power, the drive is expected to operate with a maximum of 100mV
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.
3.8.3Voltage tolerance
Voltage tolerance (including noise):
5V ± 5%
12V ±10%
Constellation ES Serial ATA Product Manual, Rev. G | 13 |