AK8996 Datasheet, PDF (18/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
11-2-2) G1/2 Gain Adjustment Circuit
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min. Typ. Max. Units Comments
Measurement in test mode
Unadjusted
Vg10 VP-VN=80mV
145 160 175 mV
G1/2 output
VDD=5V±5%
voltage
EIG[2:0]=0h, EIG[3]=0
Vg02 VP-VN=40mV
73.0 80 87.0 mV
VDD=2.2 - 3.6V
EIG[2:0]=0h, EIG[3]=0
EVD[0]=1
G1 adjustment G1sc+ EIG[2:0]=7h
9
times
range
G1sc- EIG[2:0]=0h
2
times
Adj. step
G1sc stp
1
times
G2 adj.
G2sc+ EIG[3]=1
2
times
G2sc- EIG[3]=0
1
times
11-2-3) Offset Voltage Adjustment Circuit
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol Conditions
Min.
Typ.
Max. Units Comments
Measurement in test mode
Unadjusted output Vo01 VDD=5V±5% 0.5*VDD 0.5*VDD 0.5*VDD mV
voltage
–30
+30
Vo02 VDD=2.2-3.6V 0.5*VDD 0.5*VDD 0.5*VDD mV
EVD[0]=1
–15
+15
Offset rough adj. Ocmp+ EOC[10]=0h
+52.5
%
DAC adj. range
EOC[9:7]=7h
Ocmn+ EOC[10]=1h
-52.5
%
EOC[9:7]=7h
Adj. step
Ocm stp
7.5
%
Offset fine adj.
Ocl+ EOC[10]=0h
+7.875
%
DAC adj. range
EOC[6:0]=3Fh
Ocl- EOC[10]=1h
-7.875
%
EOC[6:0]=3Fh
Adj. step
Ocl stp
0.125
%
11-2-4) Span Voltage Adjustment Circuit
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min.
Typ.
Max. Units Comments
Measurement in test mode after offset voltage adjustment
Unadjusted
Vs01 VP-VN=80 mV@5V 480
500
520 mV
Span voltage Vs02 VP-VN=40 mV@3V 240
250
260 mV
EVD[0]=1
Span adj. range Sc+ ESC[8:0]=0FFh
100/36.25
times
Sc- ESC[8:0]=100h
100/164
times
Adj. Step
Sc stp N=-256 - +255
100/(100+0.25*N)
times
MS1055-E-02
18
2011/12