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SLAU443 Datasheet, PDF (22/68 Pages) Texas Instruments – EEG Front-End Performance Demonstration Kit | |||
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Using the Software: ADS1299 Control Registers and GUI
www.ti.com
Figure 21. Simplified Diode Arrangement
The output voltage corresponding to a given temperature can be read selecting the Temperature Sensor
option on the Channel Control Registers GUI (see Figure 17) and verified using the AnalysisâScope tab
as shown in Figure 22. The number 0.146V (on the y-axis) can be calculated as a temperature using
Equation 1:
Temperature = (0.146 â 0.145300) / 0.00049 + 25 = 26.4°C
It should be noted that the temperature sensor input cannot be used with a gain setting of 24 as it will
saturate the PGA output.
Figure 22. Eight Channel Read of Internal Temperature Data
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EEG Front-End Performance Demonstration Kit
Copyright © 2012, Texas Instruments Incorporated
SLAU443 â May 2012
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