Chapter 4: DC and Switching Characteristics
4–25
Power Consumption
Table 4–41. Series On-Chip Termination Specification for Left I/O Banks
Resistance Tolerance
Symbol
Description
Conditions
Commercial
Industrial
Max
Units
Max
25- RS 3.3/2.5 Internal series termination without
calibration (25- setting
VCCIO = 3.3/2.5V
VCCIO = 3.3/2.5/1.8V
VCCIO = 1.5V
30
30
30
36
25
%
%
%
%
50- RS
3.3/2.5/1.8
Internal series termination without
calibration (50- setting
30
36
20
50- RS 1.5
Internal series termination without
calibration (50- setting
RD
Internal differential termination for
VCCIO = 2.5V
LVDS (100- setting)
Pin Capacitance
Table 4–42 shows the Arria GX device family pin capacitance.
Table 4–42. Arria GX Device Capacitance (Note 1)
Symbol
Parameter
Typical
Units
pF
CIOTB
CIOL
Input capacitance on I/O pins in I/O banks 3, 4, 7, and 8.
5.0
6.1
Input capacitance on I/O pins in I/O banks 1 and 2, including high-speed differential
receiver and transmitter pins.
pF
CCLKTB
CCLKL
Input capacitance on top/bottom clock input pins: CLK[4..7]and CLK[12..15].
Input capacitance on left clock inputs: CLK0and CLK2.
6.0
6.1
3.3
6.7
pF
pF
pF
pF
CCLKL+
COUTFB
Input capacitance on left clock inputs: CLK1and CLK3.
Input capacitance on dual-purpose clock output/feedback pins in PLL banks 11 and 12.
Note to Table 4–42:
(1) Capacitance is sample-tested only. Capacitance is measured using time-domain reflections (TDR). Measurement accuracy is within 0.5 pF.
Power Consumption
Altera offers two ways to calculate power for a design: the Excel-based PowerPlay
early power estimator power calculator and the Quartus II PowerPlay power analyzer
feature.
The interactive Excel-based PowerPlay Early Power Estimator is typically used prior
to designing the FPGA in order to get an estimate of device power. The Quartus II
PowerPlay Power Analyzer provides better quality estimates based on the specifics of
the design after place-and-route is complete. The power analyzer can apply a
combination of user-entered, simulation-derived and estimated signal activities
which, combined with detailed circuit models, can yield very accurate power
estimates.
In both cases, these calculations should only be used as an estimation of power, not as
a specification.
© December 2009 Altera Corporation
Arria GX Device Handbook, Volume 1
ALTERA [ ALTERA CORPORATION ]
