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EP4CE10F17C8N Datasheet(PDF) 9 Page - Altera Corporation |
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EP4CE10F17C8N Datasheet(HTML) 9 Page - Altera Corporation |
9 / 42 page Chapter 1: Cyclone IV Device Datasheet 1–9 Operating Conditions October 2012 Altera Corporation Cyclone IV Device Handbook, Volume 3 The OCT resistance may vary with the variation of temperature and voltage after calibration at device power-up. Use Table 1–10 and Equation 1–1 to determine the final OCT resistance considering the variations after calibration at device power-up. Table 1–10 lists the change percentage of the OCT resistance with voltage and temperature. Table 1–10. OCT Variation After Calibration at Device Power -Up for Cyclone IV Devices 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. Final OCT Resistance (1), (2), (3), (4), (5), (6) R V = (V2 – V1) × 1000 × dR/dV ––––– (7) R T = (T2 – T1) × dR/dT ––––– (8) For R x < 0; MFx = 1/ (|Rx|/100 + 1) ––––– (9) For Rx > 0; MFx = Rx/100 + 1 ––––– (10) MF = MFV × MFT ––––– (11) Rfinal = Rinitial × MF ––––– (12) Notes to Equation 1–1: (1) T2 is the final temperature. (2) T1 is the initial temperature. (3) MF is multiplication factor. (4) Rfinal is final resistance. (5) Rinitial is initial resistance. (6) Subscript x refers to both V and T. (7) R V is a variation of resistance with voltage. (8) R T is a variation of resistance with temperature. (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. (11) V2 is final voltage. (12) V1 is the initial voltage. |
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