AK8996 Datasheet, PDF (43/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
2.2 Pressure detection & self diagnosis valid (EINT1[1:0]=3h)
EAS[2: 0]
Dec Hex Bin
0 0 000
1 1 001
2 2 010
3 3 011
4 4 100
5 5 101
6 6 110
7 7 111
Pressure Detector Disable Time (msec)
fs: 100Hz fs: 1kHz fs: 2kHz fs: 10kHz
10.2
1.2
0.7
0.3
10.2
1.2
0.7
0.3
40.2
4.2
2.2
0.6
80.2
8.2
4.2
1.0
160.2
16.2
8.2
1.8
320.2
32.2
16.2
3.3
640.2
64.2
32.2
6.5
1280.2
128.2
64.2
12.7
Comments
Default
VDD
Settling time for
stable analog operation
DET pin output
Pressure detector disable time
(Including self diagnosis time)
3. Pressure determination circuit operation
The settling time for the VOUT pin voltage is, as with the pressure detector, determined by the 32kΩ
internal resistor and VO pin external capacitance C. Current specifications (C≤0.1µF) do not cause
any problem with the pressure determination results, whereas misinterpretation may occur in the
pressure determination circuit if a capacitance of more than 0.1µF is used. These matters should be
carefully considered before use.
4) Power Consumption
Current values described in 3) Power Consumption in the Electrical Characteristics are those for the
average current. The maximum current is shown in the table below. Use a power supply with sufficient
supply capacity by referring to this table:
Max. Current
Unit VDD: 3.6V VDD: 5.5V
Note
mA
2.4
3.5
Reference value
for design
MS1055-E-02
43
2011/12