AK8998 Datasheet, PDF (19/59 Pages) Asahi Kasei Microsystems – Preliminary

[AK8998/W/D]
9-2-4) Span Voltage Adjustment Circuit
VDD=3, 3.3, 5V±5%, Ta=-20 to 85ºC, register default, unless otherwise noted
Item
Symbol
Conditions
Min.
Typ.
Max. units Comments
Measurement in test mode after offset voltage adjustment
Unadjusted
Vs01 VP-VN=80mV
2010
2160
2310 mV
Span voltage
VDD=5V±5%
Vs02 VP-VN=40mV
1005
1080
1155 mV
VDD=3, 3.3±5%
Span adj. range Sc+ ESC[7:0]=00h
100/100
times
Sc- ESC[7:0]=FFh
100/163.75
times
Adj. Step Sc stp N= 0 - +255
100/(100+0.25*N)
times
9-2-5) Offset Temperature Drift & Sensitivity Temperature Drift Adjustment Circuit
9-2-5-1) Offset Temperature Drift Adjustment Circuit ^Note)
VDD=3, 3.3, 5V±5%, Ta=-20 to 85ºC, register default, unless otherwise noted
Item
Symbol
Conditions
Min. Typ. Max. units Comments
Measurement in test mode after offset voltage and span voltage adjustment
1^st order
DO5+ EOT[8]=0h
+36.8
coeff.
Adj. range
EOT[7:0]=FFh
VDD=5V±5%
mV/°C
DO5- EOT[8]=1h
-36.8
EOT [7:0]=FFh
VDD=5V±5%
mV/°C
DO3+
EOT[8]=0h
EOT[7:0]=FFh
VDD=3, 3.3±5%
+22.08
mV/°C
DO3-
EOT[8]=1h
EOT[7:0]=FFh
VDD=3, 3.3±5%
-22.08
mV/°C
Adj. step DO5 stp VDD=5V±5%
0.144
mV/°C
DO3 stp VDD=3, 3.3±5%
0.087
mV/°C
Note) Design reference value; no production test performed.
9-2-5-2) Sensitivity Temperature Drift Adjustment Circuit ^Note)
VDD=3, 3.3, 5V±5%, Ta=-20 to 85ºC, register default, unless otherwise noted
Item
Symbol
Conditions
Min. Typ. Max. units Comments
Measurement in test mode after offset voltage and span voltage adjustment
1^st order
coeff.
DS1+
ESTC[0]=1h,EST[8]=0h
EST[7:0]=8Bh
+2500
ppm/°C
Adj. range
DS1-
ESTC[0]=1h,EST[8]=1h
EST[7:0]=DEh
-4000
ppm/°C
DS2+
ESTC[0]=0h,EST[8]=0h
EST[7:0]=38h
+1000
ppm/°C
DS2-
ESTC[0]=0h,EST[8]=1h
EST[7:0]=8Bh
-2500
ppm/°C
Adj. step DS stp
18
ppm/°C
Note) Design reference value; no production test performed.
MSxxxxx-E-00
- 19 -
2012/11