AK8996 Datasheet, PDF (68/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
r-2) Output reference voltage fine adjustment (LVF)
The output reference voltage is fine-tuned.
The adjustment voltage varies ratiometrically with respect to the supply voltage.
Address: 1C hex D[5:0]=ELVF[5:0]
ELVF[5:0]
VO pin
ELVR ELVR
Dec Hex Bin [10]=0 [10]=1
(*VDD) (*VDD)
VOUT pin
ELVR
ELVR
[10]=0
[10]=1
(*VDD)
(*VDD)
0 00 000000
0
0
0*OG
0*OG
1 01 000001 -0.0005 0.0005 -0.0005*OG
0.0005*OG
2 02 000010 -0.0010 0.0010 -0.0010*OG
0.0010*OG
:
:
:
:
:
:
:
30 1E 011110 -0.0150 0.0150 -0.0150*OG
0.0150*OG
31 1F 011111 -0.0155 0.0155 -0.0155*OG
0.0155*OG
32 20 100000 -0.0160 0.0160 -0.0160*OG
0.0160*OG
:
:
:
:
:
:
:
61 3D 111101 -0.0305 0.0305 -0.0305*OG
0.0305*OG
62 3E 111110 -0.0310 0.0310 -0.0310*OG
0.0310*OG
63 3F 111111 -0.0315 0.0315 -0.0315*OG
0.0315*OG
Note) OG: The value of the BUF gain (Register name: BUFG) being set.
Comments
Default
s) Pressure judge threshold adjustment (Register names: PJLV1, PJLV2)
The pressure judge threshold voltage is adjusted.
The adjustment threshold value varies ratiometrically with respect to the supply voltage.
Address: 1D hex D[1:0]=EPJLV[9:8], 1E hex D[7:0]=EPJLV[7:0]
EPJLV[9:0]
DET pin
VDD: 3V
VDD: 5V
Comments
Dec Hex
Bin
(mV)
(mV)
-450 23E 1000111110
1350
2250
-450 23F 1000111111
1347
2245
:
:
:
:
:
-401 26F 1001101111
1203
2005
-400 270 1001110000
1200
2000
-399 271 1001110001
1197
1995
:
:
:
:
:
-1 3FF 1111111111
0 0 0000000000
1 1 0000000001
:
:
:
399 18F 0110001111
400 190 0110010000
3
0
-3
:
-1197
-1200
5
0
-5
:
-1995
-2000
Default
401 191 0110010001
-1203
-2005
:
:
:
:
:
449 1C1 0111000001
-1347
-2245
450 1C2 0111000010
-1350
-2250
MS1055-E-02
68
2011/12