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3.4.8
Tab 8: Calibration
Tab 8 (shown in
Figure
registers. The ADC2 offset and gain calibration registers are only available when the ADS1263EVM is
connected.
Program the calibration coefficients manually into the registers, or send the corresponding SPI calibration
command. Click an SPI command button to run the selected calibration routine. During a calibration
routine, CAL in Progress? lights up to show that the calibration process is ongoing. If the calibration
completes successfully, CAL Completed? lights up. If CAL Completed? does not light up, run the
calibration again.
The calibration coefficients are converted to their practical units in the Offset and Gain indicators. Note
that the units of Offset can be changed from uV to mV as needed.
Calibration is not required; however, calibration improves overall ADC accuracy by about an order of
magnitude.
SBAU206 – April 2015
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24) allows for reading and writing of the offset and full-scale (gain) calibration
8 Calibration
Figure 24. Tab 8: Register Map
Copyright © 2015, Texas Instruments Incorporated
ADS126xEVM Software
27
ADS126xEVM-PDK
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