Table 41: Power Supply Generated Ripple At Drive Power Connector - Hitachi HDT725025VLA380 - Deskstar 0A33423 T7K500 250GB SATA 7200RPM 8MB Cache Hard Drive Specifications

Power supply current of
400 / 500 GB SATA models
(values in milliamps. RMS)
Idle average
Idle ripple (peak-to-peak)
Low RPM idle
Low RPM idle ripple
Unload idle average
Unload idle ripple
Random R/W average
Random R/W peak
Silent R/W average
Silent R/W peak
Start up (max)
Standby average
Sleep average
Power supply current of
250 / 300 / 320 GB SATA models
(values in milliamps. RMS)
Idle average
Idle ripple (peak-to-peak)
Low RPM Idle
Low RPM Idle Ripple
Unload Idle average
Unload Idle Ripple
Random R/W average
Random R/W peak
Silent R/W average
Silent R/W peak
Start up (max)
Standby average
Sleep average
7.3.3 Power supply generated ripple at drive power connector

Table 41: Power supply generated ripple at drive power connector

Maximum (mV pp)
+5 V dc 100
+12 V dc 150
+5 Volts [mA]
Pop Mean
500
450
340
200
340
200
1
730
1800
730
1800
1250
340
300
+5 Volts [mA]
Pop Mean
500
450
340
200
340
200
1
730
1800
730
1800
1250
340
300
MHz
Deskstar T7K500 Hard Disk Drive Specification
Std Dev Pop Mean
4
10
4
10
4
10
10
30
10
30
30
4
4
Std Dev Pop Mean
4
10
4
10
4
10
10
30
10
30
30
4
4
0-10
0-10
53
+12 Volts [mA]
Std Dev
380 4
400 10
140 4
400 10
340 4
300 10
640 20
1700 30
440 10
1000 30
2000 30
12 2
12 2
+12 Volts [mA]
Std Dev
300 4
400 10
130 4
400 10
260 4
300 10
560 20
1700 30
360 10
1000 30
2000 30
12 2
12 2
Total
[W]
7.0
3.4
5.8
11.3
8.9
1.8
1.6
Total
[W]
6.0
3.3
4.8
10.4
8.0
1.8
1.6