Texas Instruments ADS131E08, Руководство пользователя, Страница: 19 / 47

Temperature ( C)
°
=
Temperature Readnig ( V) 145,300 V
m - m
m
490 V/
°
C
+ 25 C
°
2x
1x
1x
8x
AVDD
AVSS
Temperature Sensor Monitor
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USING THE SOFTWARE
4.5 Temperature Sensor and the Scope Display Tab
The internal temperature sensor on the ADS131E08 is shown in Figure 22.
Figure 17. Internal Temperature Sensor
When the internal mux is routed to the temperature sensor input, the output voltage of the ADC may be
converted to a temperature value using
Equation 1 :
(1)
The output voltage corresponding to a given temperature can be read by running a data acquisition after
the Temperature Sensor mux option is selected, as shown in the
Channel Control Registers section.
Figure 18 demonstrates an example of temperature sensor readings read back using the GUI.
Figure 18. Eight-Channel Read of Internal Temperature Data
19 SBAU200 – June 2012 Performance Demonstration Kit for the ADS131E08
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