Texas Instruments ADS1146EVM, Руководство пользователя

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Evaluating Performance with the ADCPro Software
9.1.1.1 I/O Configuration Section
Each input channel can have a VBIAS applied to it. Checking the VBIAS box on a channel applies the
VBIAS voltage, which is approximately half the value of the supply. You can test this option as shown in
Figure 16 , using one input tied to something close to ground (make sure you observe the common-mode
restrictions listed in the ADS1246 device data sheet) as a reference for this signal.
Figure 16. Enabling VBIAS on a Channel
19 SBAU149B – June 2009 – Revised May 2011 ADS1146EVM, ADS1246EVM, ADS1146EVM-PDK, ADS1246EVM-PDK
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