AK8996 Datasheet, PDF (60/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
d-2) Sensitivity temperature drift 1^st order coefficient adjustment (Register names: ST1PS,
ST1P, ST1NS, ST1N)
Address: 09 hex – 0A hex D[9:0]=EST1P[9:0], 0B hex – 0C hex D[9:0]=EST1N[9:0]
EST1P/N1[8:0]
Dec Hex
Bin
Ratio
(%)
EST1P/N[9]:0 EST1P/N[9]:1 _Comments
VDD: 5V / 3V VDD: 5V / 3V
0 000 000000000 100.000
0.32
/0.30
-0.32
/-0.30
Default
1 001 000000001 99.804
0.3194
/0.2994
-0.3194
/-0.2994
…..
64 030 001000000 87.4755
0.2799
/0.2624
-0.2799
/-0.2624
…..
128 040 010000000 74.9511
0.2398
/0.2249
-0.2398
/-0.2249
…..
256 100 100000000 49.9022
0.1597
/0.1497
-0.1597
/-0.1497
…..
510 1FE 111111110 0.1957
0.0006262
/0.0005871
-0.0006262
/-0.0005871
511 1FF 111111111 0.0
0.0
0.0
e) Input gain (G1/2) adjustment (Register name: ING)
Register for setting the total gain.
The input gain is adjusted according to the full-scale voltage of the pressure sensor.
Adjust the input gain so that the internal gain amp 2 output voltage is 400mV (@VDD: 5.0V) or less.
Address: 0D hex D[3:0]=EIG[3: 0]
EIG[2:0]
Dec Hex
Bin
G1 Gain
(times)
00
000
2
11
001
3
22
010
4
33
011
5
44
100
6
55
101
7
66
110
8
77
111
9
Total Gain (times)
EIG[3]=0 EIG[3]=1
20
40
30
60
40
80
50
100
60
120
70
140
80
160
90
180
Comments
Default
MS1055-E-02
60
2011/12