SCA61T Series
Subject to changes 7/17
www.murata.com Doc. nr. 8261900 Rev.A3
)
100/1(* ScorrSENSSENScomp
+=
0362.0*
0019.0*00011
.0
2
++−=
TTScorr
Offcorr
OffsetOFFSETcomp
−=
0514.0*0032.0*0000857.0*0000005.0
23
+−+−= TTTOffcorr
Temperature dependency of SCA61T sensitivity
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
-40 -20
0
20
40
60 80 100 120
average
+3 sigma
-3 sigma
Figure 5. Typical temperature dependency of SCA61T sensitivity
1.9 Additional External Compensation
To achieve the best possible accuracy, the temperature measurement information and typical
temperature dependency curves can be used for SCA61T offset and sensitivity temperature
dependency compensation. The equation for the fitted 3
rd
order polynome curve for offset
compensation is:
Where:
Offcorr: 3
rd
order polynome fitted to average offset temperature dependency curve
T temperature in °C (Refer to paragraph 2.7 Temperature Measurement)
The calculated compensation curve can be used to compensate for the temperature dependency of
the SCA61T offset by using the following equation:
Where:
OFFSETcomp temperature compensated offset in degrees
Offset Nominal offset in degrees
The equation for the fitted 2
nd
order polynome curve for sensitivity compensation is:
Where:
Scorr: 2
nd
order polynome fitted to average sensitivity temperature dependency curve
T temperature in °C
The calculated compensation curve can be used to compensate the temperature dependency of
the SCA61T sensitivity by using the following equation:
Where:
SENScomp temperature compensated sensitivity
