Visible to Intel only — GUID: xak1487191160228
Ixiasoft
Visible to Intel only — GUID: xak1487191160228
Ixiasoft
OCT Specifications
Description | VCCIO (V) | Resistance Tolerance | Unit | |
---|---|---|---|---|
Commercial Maximum | Industrial, Extended industrial, and Automotive Maximum | |||
Series OCT without calibration | 3.0 | ±30 | ±40 | % |
2.5 | ±30 | ±40 | % | |
1.8 | ±40 | ±50 | % | |
1.5 | ±50 | ±50 | % | |
1.2 | ±50 | ±50 | % |
Description | VCCIO (V) | Calibration Accuracy | Unit | |
---|---|---|---|---|
Commercial Maximum | Industrial, Extended industrial, and Automotive Maximum | |||
Series OCT with calibration at device power-up | 3.0 | ±10 | ±10 | % |
2.5 | ±10 | ±10 | % | |
1.8 | ±10 | ±10 | % | |
1.5 | ±10 | ±10 | % | |
1.2 | ±10 | ±10 | % |
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 |
Final OCT Resistance Equation
ΔRV = (V2 – V1) × 1000 × dR/dV 6 7 8 9
ΔRT = (T2 – T1) × dR/dT 10 11 12 13
For ΔRx < 0; MFx = 1/ (|ΔRx|/100 + 1) 14 15
For ΔRx > 0; MFx = ΔRx/100 + 1 14 15
MF = MFV × MFT 15
Impedance Change Example
Calculate the change of 50-Ω I/O impedance from 25°C at 3.0 V to 85°C at 3.15 V as follows:
ΔRV = (3.15 – 3) × 1000 × –0.026 = –3.83
ΔRT = (85 – 25) × 0.262 = 15.72
Because ΔRV is negative,
MFV = 1 / (3.83/100 + 1) = 0.963
Because ΔRT is positive,
MFT = 15.72/100 + 1 = 1.157
MF = 0.963 × 1.157 = 1.114
Rfinal = 50 × 1.114 = 55.71 Ω