EP1S10F780I6N Altera, EP1S10F780I6N Datasheet - Page 336
EP1S10F780I6N
Manufacturer Part Number
EP1S10F780I6N
Description
IC STRATIX FPGA 10K LE 780-FBGA
Manufacturer
Altera
Series
Stratix®r
Datasheet
1.EP1S10F484I6N.pdf
(864 pages)
Specifications of EP1S10F780I6N
Number Of Logic Elements/cells
10570
Number Of Labs/clbs
1057
Total Ram Bits
920448
Number Of I /o
426
Voltage - Supply
1.425 V ~ 1.575 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
780-FBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
EP1S10F780I6N
Manufacturer:
ALTERA
Quantity:
3 000
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Enhanced PLLs
Figure 1–14. Spread-Spectrum Signal Energy versus Non-Spread-Spectrum Signal Energy
1–26
Stratix Device Handbook, Volume 2
Amplitude
(dB)
Spread-spectrum technology modulates the target frequency over a small
range. For example, if a 100-MHz signal has a 0.5% down-spread
modulation, then the frequency is swept from 99.5 to 100 MHz.
Figure 1–14
spread-spectrum signal as opposed to a non-spread-spectrum signal. It is
apparent that instead of concentrating the energy at the target frequency,
the energy is re-distributed across a wider band of frequencies, which
reduces peak energy.
Not only is there a reduction in the fundamental peak EMI components,
but there is also a reduction in EMI of the higher order harmonics. Since
some regulations focus on peak EMI emissions, rather than average EMI
emissions, spread-spectrum technology is a valuable method of EMI
reduction.
Spread-spectrum technology would benefit a design with high EMI
emissions and/or strict EMI requirements. Device-generated EMI is
dependent on frequency, output voltage swing amplitude, and slew rate.
For example, a design using LVDS already has low EMI emissions
Spread-Spectrum Signal
Non-Spread-Spectrum Signal
gives a graphical representation of the energy present in a
δ = 0.5%
Frequency
(MHz)
Δ = ~5 dB
Altera Corporation
July 2005
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