AK8998 Datasheet, PDF (2/59 Pages) Asahi Kasei Microsystems – Preliminary

[AK8998/W/D]
- IREF current adjustment control
- Resolution: 4bits
- Adjustment step: 2.8% /step typ.
• Temperature sensor (internal or external)
- Temperature range: -20 to 85 °C
- Internal temperature sensor output voltage adjustment control
- Resolution: 6 bits
- Adjustment step: 0.2% /step
- External temperature sensor output voltage adjustment control
- Resolution: 9 bits （Rough/ Fine=3/6bits）
- Adjustment step: Rough 10% /step / Fine 0.2% /step
- Integrated external temperature sensor constant current circuit: 50µA typ.
• Integrated oscillator for intermittent operation (1000kHz typ.)
- Oscillating frequency adjustment control
- Resolution: 4 bits
- Adjustment step: 5% /step typ.
• Integrated EEPROM for compensation values and control data storage
- Size: 131 bits
- Endurance: 1,000 times or more
- Retention time: 10 years or more @Ta: 85°C
• Supply Type: Tray (Die), Wafer, PKG (UQFN16)
Product name
AK8998
AK8998W
AK8998D
Supply Type
PKG (UQFN16)
Wafer
Tray (Die)
Comments
Block Diagram
VS
EXTMP
VP
VN
Regulator
V_Bandgap
V_Reference
I_Reference
V_Temp.
(internal or
external)
Gain Temp.
track
Offset Temp.
track
VDD track
STV
Oscillator
Timing
Logic
Power ON
Reset
V_
Common
VOUT
EEPROM
Pressure Detector 2
Pressure Detector 1
VDD
VSS
AGND
DET2 / PTH
DET1
Offset_Temp. Gain_Temp.
Gain Amp.1 Gain Amp.2
Gain Amp.3
Offset
Gain
Gain Amplifier Block
LPF
S/H & SCF
& Level Shift
EEPROM
&
Control
Register
Buffer
& SMF
VO
VOUT
Serial I/F SDI/O
CSCLK
MSxxxxx-E-00
-2-
2012/11