HC4GX15 Datasheet, PDF (637/668 Pages) Altera Corporation – HardCopy IV Device Handbook

Chapter 1: DC and Switching Characteristics of HardCopy IV Devices
1–7
Electrical Characteristics
The calibration accuracy for calibrated series and parallel OCTs are applicable at the
moment of calibration. If the voltage or temperature changes, the termination
resistance value varies. Table 1–9 lists the resistance tolerance for HardCopy IV OCT.
Table 1–9. I/O OCT Resistance Tolerance—Preliminary (Note 1)
Symbol
Description
Resistance Tolerance
Commercial Max Industrial Max Unit
ROCT_CAL Internal series/parallel OCT with calibration
(2)
ROCT_UNCAL Internal series/parallel OCT without calibration
TBD
—
%
—
%
Notes to Table 1–9:
(1) Pending silicon characterization.
(2) For resistance tolerance after power-up calibration, refer to Table 1–10.
Table 1–10 lists OCT variation with temperature and voltage after power-up
calibration. Use Table 1–10 and Equation 1–1 to determine the OCT variation when
voltage and temperature vary after power-up calibration.
Equation 1–1. OCT Variation Without Re-Calibration (Note 1)
R_OCT
=
R_CA

L_
1
+
d_----R_--
dT
×
ΔT
+
d_----R_--
dV
×
ΔV_
Note to Equation 1–1:
(1) R_CAL is calibrated OCT at power up. ΔT and ΔV are variations in temperature and voltage with respect to temperature
and V_CCIO values, respectively, at power up.
Table 1–10. OCT Variation after Power-Up Calibration—Preliminary (Note 1), (2)
Symbol
Description
V_CCIO (V)
Commercial
Typical
3.0
TBD
2.5
TBD
dR/dV
OCT variation with voltage without
re-calibration
1.8
TBD
1.5
TBD
1.2
TBD
3.0
TBD
2.5
TBD
dR/dT
OCT variation with temperature
without re-calibration
1.8
TBD
1.5
TBD
1.2
TBD
Notes to Table 1–10:
(1) Valid for V_CCIO range of ± 5% and a temperature range of 0° to 85°C.
(2) Pending silicon characterization.
Unit
%/mV
%/°C
© June 2009 Altera Corporation
HardCopy IV Device Handbook Volume 4