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CONFIDENTIAL
[AK8999A/AW/AD]
2) Adjustment Accuracy
Adjustment accuracy targets are shown below.
2.1) The case of 1st order adjustment
Parameter
Offset adjustment accuracy
Offset temp. drift adjustment accuracy
Output span adjustment accuracy
Sensitivity temp. adjustment accuracy
Sensitivity supply voltage and
temp. variation step
Sample and hold circuit output error
Offset adjustment accuracy Note1)
Span adjustment accuracy Note2)
Offset adjustment accuracy Note3)
Symbol
Min.
Typ.
Note4)
Max.
Note5)
Units
Cof
Coft
Csn
Csnt
0.083
0.120
0.146
0.114
%FS
%FS
%FS
%FS
Cstv
0.057
%FS
Cshe
Cofall
Csnall
Call
0.0
0.146
0.194
0.194
%FS
%FS
%FS
%FS
1.0
1.0
1.0
Description
Note1) Cofall = (Cof^2+Coft^2)^(1/2)
Note2) Csnall = (Csn^2+Csnt^2+Cstv^2+Cshe^2)^(1/2)
Note3) Call = max(Cofall,Csnall)
Note4) Temp. = 25ºC, VDD = 5V, G1 = 10x, G2 = 1.5x, G3 = 1.8x, Offset temp. drift 1st order coefficient = Min. or
Max., Sensitivity temp. drift 1st order coefficient = Min., VOUT output band-limited effective
(≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz)
Note5) Temp. = -40 to 105ºC, VDD = 5V ± 10%, 3.3V ± 10%, 3.0V ± 10%, G1/G2/G3 = Min. to Max.,
Each temp. coefficient = Min. to Max., VOUT output band-limited effective
(≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz)
2.2) The case of quasi 2nd order adjustment by piecewise linear approximation
Typ.
Parameter
Symbol
Min.
Note9)
Offset adjustment accuracy
Offset temp. drift adjustment accuracy
Offset temp. drift adjustment switching
accuracy using the piecewise linear
approximation method
Output span adjustment accuracy
Sensitivity temp. adjustment accuracy
Sensitivity temp. adjustment switching
accuracy using the piecewise linear
approximation method
Sensitivity supply voltage and
temp. variation step
Sample and hold circuit output error
Offset adjustment accuracy Note6)
Span adjustment accuracy Note7)
Offset adjustment accuracy Note8)
Max.
Note10)
Units
Cof
Coft
0.083
0.120
%FS
%FS
Coftc
0.0
%FS
Csn
Csnt
0.146
0.114
%FS
%FS
Csntc
0.0
%FS
Cstv
0.057
%FS
Cshe
Cofall
Csnall
Call
0.0
0.146
0.194
0.194
%FS
%FS
%FS
%FS
1.0
1.0
1.0
Description
Note6) Cofall = (Cof^2+Coft^2)^(1/2)
Note7) Csnall = (Csn^2+Csnt^2+Cstv^2+Cshe^2)^(1/2)
Note8) Call = max(Cofall,Csnall)
Note9) Temp. = 25ºC, VDD = 5V, G1 = 10x, G2 = 1.5x, G3 = 1.8x, Offset temp. drift 1st order coefficient = Min. or
Max., Sensitivity temp. drift 1st order coefficient = Min., VOUT output band-limited effective
(≤ 500Hz@Fs = 8.33kHz, ≤50Hz@Fs=0.83kHz)
Note10) Temp. = -40 to 105ºC, VDD = 5V ± 10%, 3.3V ± 10%, 3.0V ± 10%, G1/G2/G3 = Min. to Max.,
Each temp. coefficient = Min. to Max., VOUT output band-limited effective
(≤ 500Hz@Fs = 8.33kHz, ≤ 50Hz@Fs = 0.83kHz)
* The adjustment accuracy is based on our definition. Please be careful the accuracy of product depends on the
sensor characteristics and adjustment method.
MS1600-E-00
2014/05
-5-