Chapter 1: Cyclone III Device Datasheet

1–7

Electrical Characteristics

July 2012

Altera Corporation

Cyclone III Device Handbook

Volume 2

The OCT resistance may vary with the variation of temperature and voltage after

calibration at device power-up. Use Table 1–8 and Equation 1–1 to determine the final

OCT resistance considering the variations after calibration at device power-up.

Table 1–8 lists the change percentage of the OCT resistance with voltage and

temperature.

Table 1–8. Cyclone III Devices OCT Variation After Calibration at Device Power-Up

Nominal Voltage

dR/dT (%/°C)

dR/dV (%/mV)

3.0

0.262

–0.026

2.5

0.234

–0.039

1.8

0.219

–0.086

1.5

0.199

–0.136

1.2

0.161

–0.288

Equation 1–1. (1), (2), (3), (4), (5), (6)

R

(7)

R

(8)

For

R

(9)

Notes to Equation 1–1:

(3) MF is multiplication factor.

(7)

R

(8)

R

(9) dR/dT is the change percentage of resistance with temperature after calibration at device power-up.

(10) dR/dV is the change percentage of resistance with voltage after calibration at device power-up.