Table 9-9 Typical (Nominal) Shunt Voltage Gain vs. REXT at IN+ and IN-| REXT | GTotal, typical (V/V) |
|---|
| 0Ω | 200 |
| 110Ω | 176.6784452 |
Table 9-10 Calculated Total Gain Using Best Fit Line| TA (°C) | -40 | 25 | 125 |
|---|
| REXT = 0 | 199.9430451 | 199.8978107 | 199.883843 |
| REXT = 110Ω | 176.3839626 | 176.3770096 | 176.2355055 |
EG is calculated relative to the
typical gain as shown in Table 9-11
Table 9-11 Calculated Total Gain and Offset Error| TA (°C) | -40 | 25 | 125 |
|---|
| EG (%) | REXT = 0 | -0.028% | -0.051% | -0.058% |
| REXT = 110Ω | -0.167% | -0.171% | -0.251% |
| VOS (µV) | REXT = 0 | -13.0103 | -11.2788 | -6.8169 |
| REXT = 110Ω | -16.2581 | -15.4507 | -13.8660 |
Table 9-12 Calculated and Predicted External Input Resistance Error (eEXT)| TA (°C) | -40 | 25 | 125 |
|---|
| EG, EXT (%) | Measured | -0.138% | -0.120% | -0.193% |
| Predicted | -0.056% | -0.120% | -0.193% |
| VOS, EXT (µV) | Measured | -3.248 | -4.172 | -7.049 |
| Predicted | -2.65 | -4.19 | -6.63 |
Table 9-13 Calculated Total Gain and Offset Error Drift| Temperature Coefficient Calculation Range | Δe/(25°C- -40°C) | Δe/(125°C- -40°C) | Δe/(125°C- 25°C) |
|---|
| EG Drift (ppm/°C) | REXT = 0 | -3.5 | -1.8 | -0.7 |
| REXT = 110Ω | -0.6 | -5.1 | -8.0 |
| VOS Drift (nV/°C) | REXT = 0 | 26.639 | 37.536 | 44.619 |
| REXT = 110Ω | 12.422 | 14.498 | 15.847 |
Table 9-14 Calculated and Predicted External Input Resistance Error Drift (eEXT Drift)| Temperature Coefficient Calculation Range | Δe/(25°C- -40°C) | Δe/(125°C- -40°C) | Δe/(125°C- 25°C) |
|---|
| EG Drift, EXT (ppm/°C) | Measured | 2.87 | -3.30 | -7.31 |
| Predicted | -9.9 | -8.3 | -7.3 |
| VOS Drift, EXT (nV/°C) | Measured | -14.22 | -23.04 | -28.77 |
| Predicted | -23.62 | -24.09 | -24.4 |
Table 9-15 Measured Input Offset and Calculated VOS, EXT over VCM at 125°C| VCM (V) | 0 | 9 | 12 | 15 | 25 |
|---|
| VOS (µV) | REXT = 0 | 10.31 | -3.25 | -6.65 | -10.26 | -22.26 |
| REXT = 110Ω | 32.47 | -9.71 | -13.59 | -17.86 | -32.78 |
| VOS, EXT (µV) | 22.16 | -6.47 | -6.94 | -7.59 | -10.53 |
Table 9-16 Measured Input CMRR and Calculated CMRREXT at 125°C| Calculation Method | Two Point | Best Fit |
| Units | µV/V | dB | µV/V | dB |
| CMRR RTI | REXT = 0 | -1.30 | -117.70 | -1.29 | -117.77 |
| REXT = 110Ω | -2.61 | -111.67 | -2.51 | -111.99 |
| CMRREXT | -1.31 | 6.04 | -1.22 | 5.78 |
Table 9-17 Measured and Predicted VOS, EXT over VCM at 125°C| VCM (V) | 0 | 9 | 12 | 15 | 25 |
|---|
| VOS, EXT (µV) | Measured | 22.16 | -6.47 | -6.94 | -7.59 | -10.53 |
| Predicted | 4.78 | -5.82 | -6.63 | -7.43 | -10.10 |
VSENSE = 23-mV, TA = 125°C
Table 9-18 VREF_EFFECTIVE (V) over VCM| VCM (V) | 0 | 9 | 12 | 15 | 25 |
|---|
| REXT = 0 | Measured | 0.14555 | 0.17213 | 0.18101 | 0.18988 | 0.21948 |
| Predicted | 0.146157952 | 0.172487021 | 0.181263378 | 0.190039734 | 0.219294255 |
| Prediction Error | -6.08E-04 | -3.57E-04 | -2.53E-04 | -1.60E-04 | 1.86E-04 |
| REXT = 110Ω | Measured | 0.14555 | 0.17217 | 0.18104 | 0.18991 | 0.21945 |
| Predicted | 0.146158039 | 0.17248129 | 0.181255707 | 0.190030124 | 0.219278181 |
| Prediction Error | -6.08E-04 | -3.11E-04 | -2.16E-04 | -1.20E-04 | 1.72E-04 |
Table 9-19 VREF, EFFECTIVE (V) over Temperature| TA (°C) | -40 | 25 | 125 |
|---|
| REXT = 0 | Measured | 0.18136 | 0.18121 | 0.18101 |
| Predicted | 0.18110 | 0.18116 | 0.18126 |
| Prediction Error | 2.65E-04 | 4.90E-05 | -2.53E-04 |
| REXT = 110Ω | Measured | 0.18138 | 0.18122 | 0.18104 |
| Predicted | 0.18109 | 0.18115 | 0.18126 |
| Prediction Error | 2.92E-04 | 6.66E-05 | -2.16E-04 |