DATA SHEET
HAL880
3.6.1. Definition of Sensitivity Error ES
ES is the maximum of the absolute value of 1 minus
the quotient of the normalized measured value1) over
the normalized ideal linear2) value:
meas
ideal
-----------
ES = max abs
– 1
[Tmin, Tmax]
In the example below, the maximum error occurs at
−10 °C:
1.001
0.992
------------
ES =
– 1 = 0.9%
1)
2)
normalized to achieve a least-square-fit straight-line
that has a value of 1 at 25 °C
normalized to achieve a value of 1 at 25 °C
ideal 200 ppm/k
1.03
1.02
1.01
least-square-fit straight-line of
normalized measured data
measurement example of real
sensor, normalized to achieve a
value of 1 of its least-square-fit
straight-line at 25 °C
1.001
1.00
0.992
0.99
0.98
–25 -10
150
175
0
25
temperature [°C]
125
–50
50
75 100
Fig. 3–5: ES definition example
Micronas
Feb. 23, 2009; DSH000152_001EN
21
MICRONAS [ MICRONAS ]
