EVAL-ADXRS290Z-M User Guide
UG-783
Rev. 0 | Page 13 of 14
TEMPERATURE TAB
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Figure 19.
Temperature
Tab
The
Temperature
tab, as shown in Figure 19, is designed to
facilitate temperature testing of the
ADXRS290
. This tab
determines the device offset stability with respect to temperature.
An
ADT7301
temperature sensor is included on the satellite
board for accurate temperature measurement of the environment
near the
ADXRS290
device.
For this tab, the sampling data rate is fixed to 100 Hz, with the
effective data rate observed by the user determined by the
Number of Samples
box. The default number of samples is set
to 100, resulting in an effective data rate of 1 Hz, and an effective
bandwidth of 0.5 Hz. Low data rates are desirable for temperature
testing because offset stability vs. temperature is a predominantly
dc behavior. The operation for
View Measurement
,
View & Save
Measurement
, and
Stop Measurement
is the same as described
in the Real Time Data Tab section.
To avoid measurement error, use the following precautions:
Keep the temperature sweep ramp rate low (<2°C/minute)
to avoid false temperature hysteresis. The physical separation
of the
ADT7301
and the
ADXRS290
results in a temperature
differential because each device takes longer to reach
equilibrium with the temperature of the environmental
chamber. Reducing the temperature ramp rate helps to
minimize this effect.
Ensure that the device does not move during the
temperature sweep. Any motion induced during the
temperature sweep results in erroneous data samples.
