AK8996 Datasheet, PDF (16/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
10) Self-Diagnostic Circuit
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min.
Typ.
Max. Units Comments
Self-diagnostic
normal
operation
Vself
EINT1[1:0]=10
0.48*VDD
-0.1
0.52*VDD
+0.1
V
judgment range
Self-diagnostic
detection time
Tself
EINT1[1:0]=10
450
600 µsec
11) Analog Characteristics
11-1) Reference Section
11-1-1) Reference Section Characteristics
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min.
Typ.
Max. Units Comments
VREF voltage Vr0 Unadjusted
0.97
1.0
1.04
V
AM[3:0]:1h DET out
Vr+ With respect to Vr0
+30
mV
VREF adj. width _Vr-
Max: EVR[2:0]=3h
With respect to Vr0
-40
mV
Min: EVR[2:0]=4h
VREF adj. step Vrstp
10
mV
VS voltage
VS51 After VREF adj.
V
VS pin out
3.88
4.00
4.12
Load resistance: 3kΩ
VS52 Load resistance: 1kΩ 3.88
4.00
4.12
VDD>2.7V
VS31 After VREF adj.
V
VS pin out
1.94
2.00
2.06
Load resistance: 3kΩ
VS32 Load resistance: 1kΩ 1.94
2.00
2.06
VDD>2.7V
IREF current
Ir0 Unadjusted
16.15
20
24.98 µA
AM[3:0]:2h DET out
Ir+ With respect to Ir0
+4.81
µA
IREF adj. width
Ir-
Max: EIR[3:0]=7h
With respect to Ir0
-3.40
µA
Min: EIR[3:0]=8h
IREF adj. step Irstp
0.547
µA
OSC freq.
Fr0 Unadjusted
768
1024 1288 kHz
AM[3:0]:3h DET out
OSC adj. width Fr+ With respect to Fr0
204.8
kHz
Max: EFR[3:0]=4h
Fr- With respect to Fr0
-204.8
kHz
Min: EFR[3:0]=Ch
OSC adj. step Frstp
51.2
kHz
MS1055-E-02
16
2011/12