ZHCSHA6E May 2009 – January 2018 ADS1013 , ADS1014 , ADS1015
PRODUCTION DATA.
A precision voltage source is used to sweep VSHUNT from –50 mV to +50 mV. The application circuit produces a differential voltage of –250 mV to +250 mV across the ADC inputs. Figure 30 and Figure 31 show the measurement results. The measurements are taken at TA = 25°C. Although 1% tolerance resistors are used, the exact value of these resistors are measured with a Fluke 4.5 digit multimeter to exclude the errors due to inaccuracy of these resistors. In Figure 30, the x-axis represents VSHUNT and the black line represents the measured digital output voltage in mV. In Figure 31, the x-axis represents VSHUNT, the black line represents the total measurement error in %, the blue line represents the total measurement error in % after excluding the errors from precision resistors and the green line represents the total measurement error in % after excluding the errors from precision resistors and performing a system offset calibration with VSHUNT = 0 V. Table 10 shows a results summary.
| PARAMETER | VALUE |
|---|---|
| Total error, including errors from 1% precision resistors | 1.89% |
| Total error, excluding errors from 1% precision resistors | 0.17% |
| Total error, after offset calibration, excluding errors from 1% precision resistors | 0.11% |