AK8999AW Datasheet, PDF (4/68 Pages) Asahi Kasei Microsystems – Pressure Sensor Control IC

CONFIDENTIAL
[AK8999A/AW/AD]
4. Adjustment Characteristics
1) Sensor Characteristics
Adjustable characteristics of pressure sensors are shown below.
■VDD: 5V ± 10%, Sensor drive voltage: 4V, Temperature range: -40 to 105C
Parameter
Symbol Min.
Typ.
Max. Units
Description
Sensor resistance
Sres
1.00
4.00
6.50
k
Voltage input span range Sspnin1 12.00 44.00
76.00
mV Sensor1
Sspnin2 17.00 70.00 125.00 mV Sensor2
Offset voltage adjustment Soff1
-15.00
0.00
15.00
mV Sensor1
range
Soff2
-35.00
0.00
35.00
mV Sensor2
Sensitivity temp. drift
Sst1
coefficient
Sst2
-4000
-4000
2500
2500
ppm/C Sensor1
ppm/C Sensor2
Offset temp. drift
coefficient
Sot1
-0.040
0.00
0.040 mV/C Sensor1
Sot2
-0.080
0.00
0.080 mV/C Sensor2
Note) To combine characteristics of Sensor 1/2 is not allowed. For example, when the characteristic of span
voltage is used as Sensor 1, the characteristic of offset voltage can choose only Sensor 1.
■VDD: 3V ± 10%, 3.3V ± 10%, 5V ± 10%, Sensor drive voltage: 2.2V, Temperature range: -40 to 105C
Parameter
Symbol Min.
Typ.
Max. Units
Description
Sensor resistance
Sres
0.82
4.00
6.50
k
Voltage input span range Sspnin1
6.60
24.20
41.80
mV Sensor1
Sspnin2
9.00
40.00 70.00
mV Sensor2
Offset voltage adjustment Soff1
-8.25
0.00
8.25
mV Sensor1
range
Soff2
-19.25
0.00
19.25
mV Sensor2
Sensitivity temp. drift
Sst1
coefficient
Sst2
-4000
-4000
2500
2500
ppm/C Sensor1
ppm/C Sensor2
Offset temp. drift
coefficient
Sot1
-0.022
0.00
0.022 mV/C Sensor1
Sot2
-0.044
0.00
0.044 mV/C Sensor2
Note) To combine characteristics of Sensor 1/2 is not allowed. For example, when the characteristic of span
voltage is used as Sensor 1, the characteristic of offset voltage can choose only Sensor 1.
MS1600-E-00
-4-
2014/05