4–18
Altera Corporation
Stratix Device Handbook, Volume 1
January 2006
Power Consumption
device. Decoupling capacitors were not used in this measurement. To
factor in the current for decoupling capacitors, sum up the current for
each capacitor using the following equation:
I = C (dV/dt)
If the regulator or power supply minimum output current is more than
the Stratix device requires, then the device may consume more current
than the maximum current listed in
Table 4–34. However, the device does
not require any more current to successfully power up than what is listed
The exact amount of current consumed varies according to the process,
temperature, and power ramp rate. Stratix devices typically require less
current during power up than shown in
Table 4–34. The user-mode
current during device operation is generally higher than the power-up
current.
The duration of the ICCINT power-up requirement depends on the VCCINT
voltage supply rise time. The power-up current consumption drops when
the VCCINT supply reaches approximately 0.75 V.
Table 4–34. Stratix Power-Up Current (ICCINT) Requirements Note (1) Device
Power-Up Current Requirement
Unit
Typical
Maximum
EP1S10
250
700
mA
EP1S20
400
1,200
mA
EP1S25
500
1,500
mA
EP1S30
550
1,900
mA
EP1S40
650
2,300
mA
EP1S60
800
2,600
mA
EP1S80
1,000
3,000
mA
(1)
The maximum test conditions are for 0
° C and typical test conditions are for
40
° C.