AK09918C Datasheet, PDF (6/30 Pages) Asahi Kasei Microsystems – 3-axis Electronic Compass

[AK09918]
8.2. AC Characteristics
Parameter
Symbol Pin
Condition
Min. Typ. Max. Unit
Power supply rise time PSUP VDD Period of time that VDD changes
(Note 4)
from 0.2V to Vdd.
50 ms
POR completion time
(Note 4)
PORT
Period of time after PSUP to
Power-down mode (Note 5)
100 µs
Power supply turn off
voltage (Note 4)
SDV VDD Turn off voltage to enable POR to
restart (Note 5)
0.2 V
Power supply turn on PSINT VDD Period of time that voltage lower 100
µs
interval (Note 4)
than SDV needed to be kept to
enable POR to restart (Note 5)
Wait time before mode Twait
setting
100
µs
(Note 4) Reference value for design.
(Note 5) When POR circuit detects the rise of VDD voltage, it resets internal circuits and initializes the
registers. After reset, AK09918 transits to Power-down mode.
VDD
SDV
0V
Power-down mode
PORT
PSUP
PSINT
Power-down mode
8.3. Analog Circuit Characteristics
Parameter
Symbol
Condition
Min. Typ. Max. Unit
Measurement data output bit
DBIT
-
16
-
bit
Time for measurement
TSM Single measurement mode
7.2
8.2
ms
Magnetic sensor sensitivity
BSE
Ta = 25 ˚C
0.1425 0.15 0.1575 µT/LSB
Magnetic sensor measurement range BRG
(Note 6)
Ta = 25 ˚C
±4670 ±4912 ±5160 µT
Magnetic sensor initial offset
BIO
(Note 7)
Ta = 25 ˚C
-2000
+2000 LSB
(Note 6) Reference value for design
(Note 7) Value of measurement data register on shipment test without applying magnetic field on purpose.
016014242-E-00
-6-
2016/11