AK8996 Datasheet, PDF (19/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
11-2-5) Offset Temperature Drift & Sensitivity Temperature Drift Adjustment Circuit
11-2-5-1) Quadratic Function Generator (a*Temp^2+b*Temp+c)
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min.
Typ.
Max. Units Comments
Measurement in test mode after offset voltage and span voltage adjustment
2^nd order coeff. a A2nd5+ VDD=5V±5%
+0.0016
Adj. range 1
A2nd5-
-0.0016
Adj. step 1 A2nd5 stp
2^nd order coeff. a A2nd3+
Adj. range 2
A2nd3-
VDD=2.2 - 3.6V
1.260E-5
+0.0008
-0.0008
Adj. step 2 A2nd3 stp
0.630E-5
Note) Design reference value; no production test performed.
11-2-5-2) Offset Linear Function Generator (d*Temp+e)
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min.
Typ.
Max. Units Comments
Measurement in test mode after offset voltage and span voltage adjustment
1^st order coeff. d D2ndO5+ VDD=5V±5%
+0.60
Adj. range 1
D2ndO5-
-0.60
Adj. step 1 D2ndO5 stp
1^st order coeff. d D2ndO3+ VDD=2.2 - 3.6V
0.0012
+0.30
Adj. range 2
D2ndO3-
-0.30
Adj. step 2 D2ndO3 stp
0.00060
Note) Design reference value; no production test performed.
11-2-5-3) Sensitivity Linear Function Generator (d*Temp+e)
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min.
Typ.
Max. Units Comments
Measurement in test mode after offset voltage and span voltage adjustment
1^st order coeff. d D2ndS5+ VDD=5V±5%
+0.32
Adj. range 1
D2ndS5-
-0.32
Adj. step 1 D2ndS5 stp
1^st order coeff. d D2ndS3+ VDD=2.2 - 3.6V
0.000626
+0.30
Adj. range 2
D2ndS3-
-0.30
Adj. step 2 D2ndS3 stp
0.00060
Note) Design reference value; no production test performed.
MS1055-E-02
19
2011/12