ID 683801
Date 5/23/2023
Public

OCT Without Calibration Resistance Tolerance Specifications

Table 10.  OCT Without Calibration Resistance Tolerance Specifications for Cyclone® V DevicesThis table lists the Cyclone® V OCT without calibration resistance tolerance to PVT changes.
Symbol Description Condition (V) Resistance Tolerance Unit
–C6 –I7, –C7 –C8, –A7
25-Ω RS Internal series termination without calibration (25-Ω setting) VCCIO = 3.0, 2.5 ±30 ±40 ±40 %
25-Ω RS Internal series termination without calibration (25-Ω setting) VCCIO = 1.8, 1.5 ±30 ±40 ±40 %
25-Ω RS Internal series termination without calibration (25-Ω setting) VCCIO = 1.2 ±35 ±50 ±50 %
50-Ω RS Internal series termination without calibration (50-Ω setting) VCCIO = 3.0, 2.5 ±30 ±40 ±40 %
50-Ω RS Internal series termination without calibration (50-Ω setting) VCCIO = 1.8, 1.5 ±30 ±40 ±40 %
50-Ω RS Internal series termination without calibration (50-Ω setting) VCCIO = 1.2 ±35 ±50 ±50 %
100-Ω RD Internal differential termination (100-Ω setting) VCCIO = 2.5 ±25 ±40 ±40 %
Figure 2. Equation for OCT Variation Without Recalibration

The definitions for the equation are as follows:

• The ROCT value calculated shows the range of OCT resistance with the variation of temperature and VCCIO.
• RSCAL is the OCT resistance value at power-up.
• ΔT is the variation of temperature with respect to the temperature at power up.
• ΔV is the variation of voltage with respect to the VCCIO at power up.
• dR/dT is the percentage change of RSCAL with temperature.
• dR/dV is the percentage change of RSCAL with voltage.