TMP007_16 Datasheet, PDF (37/55 Pages) Texas Instruments – Infrared Thermopile Sensor with Integrated Math Engine

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TMP007
SBOS685C – APRIL 2014 – REVISED JULY 2015
Typical Applications (continued)
8.2.1.1 Design Requirements
For this application, the system must operate over the environment described in Table 10.
DESIGN PARAMETER
N
Minimum T_DIE
Maximum T_DIE
Minimum T_OBJ
Maximum T_OBJ
ε
Field of view
Conversion rate
Table 10. Wide-Range Parameters
EXAMPLE VALUE
32
0°C
60°C
0°C
60°C
0.95
110°
1 sample/second
COMMENT
Number of devices in calibration set
Minimum expected die temperature
Maximum expected die temperature
Minimum expected objected temperature
Maximum expected object temperature
Object emissivity
Field of view subtended by object
Select a set of values for T_DIE and T_OBJ to generate the calibration set. At a minimum, include the four extreme
points of the temperature ranges desired. In practice, it is best to include a number of intermediate points as well.
This example uses the values shown in Table 11, with an X marking the values chosen for measurement.
T_OBJ
0°C
20°C
40°C
60°C
Table 11. Wide-Range Measurement Values
T_DIE
0°C
20°C
40°C
X
X
X
X
X
X
X
X
X
X
X
X
60°C
X
X
X
X
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