AK8996 Datasheet, PDF (5/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
Adjustment Characteristics
1) Adjustable Sensor Characteristics (Reference Example)
Item
Symbol Min.
Typ.
Max. Units
Comments
Drive voltage
Svs1
4
V
Svs2
2
V
Temperature range
Sta
-40
105
°C
Sensor resistance
Sres1
3
5
kΩ VDD: 2.2 to 3.6V
& 5V±10%
Voltage input span
Sres2
1
2
Sspnin 22.22
80
kΩ VDD: 2.7 to 3.6V
& 5V±10%
200
mV VDD: 5V±10% ^Note)
range
1
Sspnin 11.11
40
100
mV VDD: 2.2 to 3.6V ^Note)
Voltage span
2
Sspn
100/164 100/100 100/36.25 ^{times Note)}
adjustment range
Offset voltage
adjustment range
Sensitivity temp. drift 2^nd
order coefficient
Sensitivity temp. drift 1^st
order coefficient
Offset temp. drift 2^nd
order coefficient
Offset temp. drift 1^st
order coefficient
Soff1
Soff2
Sst21
Sst22
Sst11
Sst12
Sot21
Sot22
Sot11
Sot12
-48
-24
-0.0016
-0.0008
-0.32
-0.3
-0.0016
-0.0008
-0.6
-0.3
48
24
+0.0016
+0.0008
+0.32
+0.3
+0.0016
+0.0008
+0.6
+0.3
mV VDD: 5V±10% ^Note)
mV VDD: 2.2 to 3.6V ^Note)
VDD: 5V±10% ^Note)
VDD: 2.2 to 3.6V ^Note)
VDD: 5V±10% ^Note)
VDD: 2.2 to 3.6V ^Note)
VDD: 5V±10% ^Note)
VDD: 2.2 to 3.6V ^Note)
VDD: 5V±10% ^Note)
VDD: 2.2 to 3.6V ^Note)
Note) Equivalent input values assumed from the output. See 5) Registers Description 5.1.1) Adjustment
block register. This adjustment range includes variations in the AK8996.
2) Adjustment Accuracy
Item
Symbol
Min.
Typ.
Note2)
Max.
Note3)
Units
Comments
Offset adjustment accuracy
Cof
0.063
%FS
Offset temp. drift adjustment accuracy
Coft
0.101
%FS
Output span adjustment accuracy
Csn
0.125
%FS
Sensitivity temp. adjustment accuracy
Csnt
0.003
%FS
Sensitivity temp. variation step
Csts
0.268
%FS
Sensitivity supply voltage variation step Csvs
Final adjustment accuracy ^Note1)
Call
0.236
%FS
0.397 1.0 %FS
Note1) Call=(Cof^2+Coft^2+Csn^2+Csnt^2+Csts^2+Csvs^2)^(1/2)
Note2) Temp.=105ºC, VDD=4.5V, G1=5x, G3=1.25x, BufG=4x, Offset temp. drift 1st/2nd order
coefficient=Min./Max., Sensitivity temp. drift 1st/2nd order coefficient=Min.*1/2, VOUT output
band-limited (≤500Hz @Fs=10kHz, ≤100Hz@Fs=2kHz, ≤50Hz@Fs=1kHz, ≤5Hz@Fs=100Hz)
effective
Note3) Temp.=-40 to 105ºC, VDD=5V±10%, 3.3V±10%, 3.0V±10%, 2.5V±10%,
G1/G3/BufG=Min. to Max., Each temperature coefficient=Min. to Max., VOUT output band-limited
(≤500Hz @Fs=10kHz, ≤100Hz@Fs=2kHz, ≤50Hz@Fs=1kHz, ≤5Hz@Fs=100Hz) effective
* The calculation of adjustment accuracy is based on our definition as a reference. The accuracy of
product depends on your sensor characteristics and adjustment method.
MS1055-E-02
5
2011/12