EP2AGX260EF29I3N Datasheet, PDF (11/78 Pages) Altera Corporation – Device Datasheet for Arria II Devices

Chapter 1: Device Datasheet for Arria II Devices
Electrical Characteristics
1–11
The calibration accuracy for calibrated series and parallel OCTs are applicable at the
moment of calibration. When process, voltage, and temperature (PVT) conditions
change after calibration, the tolerance may change.
Table 1–13 lists the Arria II GZ OCT without calibration resistance tolerance to PVT
changes.
Table 1–13. OCT Without Calibration Resistance Tolerance Specifications for Arria II GZ Devices
Symbol
25- R_S
3.0 and 2.5
25- R_S
1.8 and 1.5
25- R_S
1.2
50- R_S
3.0 and 2.5
50- R_S
1.8 and 1.5
50- R_S
1.2
100- R_D
2.5
Description
Conditions (V)
25-internal series
OCT without
calibration
25- internal series
OCT without
calibration
25-internal series
OCT without
calibration
50- internal series
OCT without
calibration
50-internal series
OCT without
calibration
50-internal series
OCT without
calibration
100-internal
differential OCT
V_CCIO = 3.0, 2.5
V_CCIO = 1.8, 1.5
V_CCIO = 1.2
V_CCIO = 3.0, 2.5
V_CCIO = 1.8, 1.5
V_CCIO = 1.2
V_CCIO = 2.5
Resistance Tolerance
Unit
C3,I3
C4,I4
± 40
± 40
%
± 40
± 40
%
± 50
± 50
%
± 40
± 40
%
± 40
± 40
%
± 50
± 50
%
± 25
± 25
%
OCT calibration is automatically performed at power up for OCT-enabled I/Os.
When voltage and temperature conditions change after calibration, the resistance may
change. Use Equation 1–1 and Table 1–14 to determine the OCT variation when
voltage and temperature vary after power-up calibration for Arria II GX and GZ
devices.
Equation 1–1. OCT Variation (Note 1)
R_OCT
=
R
SCAL


1
+

d_----R_--
dT

T


-^d---^R---
dV

V
Notes to Equation 1–1:
(1) R_OCT value calculated from Equation 1–1shows the range of OCT resistance with the variation of temperature and
V_CCIO.
December 2013 Altera Corporation
Arria II Device Handbook Volume 3: Device Datasheet and Addendum