AK8998D

AK8998D Datasheet

[AK8998/W/D]

Part	Datasheet
AK8998D	AK8998D (pdf)

Related Parts	Information
AK8998W	AK8998W
AK8998	AK8998

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[AK8998/W/D] AK8998/W/D The AK8998 is a pressure sensor interface IC that features compensation for temperature drift and sensor variation. It is designed to excite and interface to a bridge sensor. Variations in the sensor can be corrected via compensation values stored in integrated non-volatile memory EEPROM . Compensation values are obtained from measurement results for a set of offset voltages and temperature drift, along with a set of bridge voltages and temperature drift, including characteristics of the AK8998. The AK8998 is available in a 16-pin QFN package, in wafer form and in a tray. • Pressure sensor compensation and excitation IC Analog output • Supply voltage current 7.1mA max sampling • Supply voltage 3.0V±5%, 3.3V±5%, 5.0V±5% • Operating temperature range -20 to 85ºC • Integrated sensor output compensation AK8998 Input conversion • Offset voltage adjustment - Adjustment range Rough ±13 to ±373mV / Fine ±1 to ±34mV - Adjustment step Rough 2 to 53mV /step / Fine to 0.27mV /step • Offset voltage temperature drift adjustment 1st order coefficient - Adjustment range to ±1.23mV/ºC - Adjustment step to 4.8uV/ºC • Output span voltage adjustment G1, G2, G3 - Total adjustment range to 261.6mV - G1 adjustment step : to 74.7mV /step - G2 adjustment step : to 130.8mV /step - G3 adjustment step : to 0.40mV /step • Sensitivity temperature drift adjustment 1st order coefficient - Adjustment range -4000ppm/ºC to +2500ppm/ºC or -2500ppm/ºC to +1000ppm/ºC - Adjustment step 18ppm/ºC step • Integrated output reference voltage adjustment function - Adjustment range 0.02VDD to 0.98VDD - Adjustment step 10mV /step • Integrated sampling frequency switching function 1kHz, 10kHz • Integrated analog circuit reference voltage stabilizer Add an external capacitor to AGND pin as needed • SCF and SMF included for band limitation fc:1.0kHz, 500Hz, 250Hz • 2 wire serial interface CSCLK, VOUT • Ratiometric voltage output • Integrated constant voltage source for pressure sensor 2.2V 3.3V±5% 4.0V or 2.2V 5.0V±5% • Integrated pressure detectors x2 - Detection threshold adjustment control - Adjustment range 0.125VDD to 0.9VDD - Adjustment step 0.025VDD /step - Detection threshold external setting function DET2 / PTH pin use - hysteresis voltage adjustment control - Adjustment range 0.03VDD to 0.06VDD - Adjustment step 0.01VDD /step • Integrated reference voltage & reference current generator - VREF voltage adjustment control - Resolution 3bits - Adjustment step 1% /step

PDF Datasheet Preview

[AK8998/W/D]

AK8998/W/D

The AK8998 is a pressure sensor interface IC that features compensation for temperature drift and sensor variation. It is designed to excite and interface to a bridge sensor. Variations in the sensor can be corrected via compensation values stored in integrated non-volatile memory EEPROM . Compensation values are obtained from measurement results for a set of offset voltages and temperature drift, along with a set of bridge voltages and temperature drift, including characteristics of the AK8998. The AK8998 is available in a 16-pin QFN package, in wafer form and in a tray.
• Pressure sensor compensation and excitation IC Analog output
• Supply voltage current 7.1mA max sampling
• Supply voltage 3.0V±5%, 3.3V±5%, 5.0V±5%
• Operating temperature range -20 to 85ºC
• Integrated sensor output compensation AK8998 Input conversion
• Offset voltage adjustment - Adjustment range Rough ±13 to ±373mV / Fine ±1 to ±34mV
- Adjustment step Rough 2 to 53mV /step / Fine to 0.27mV /step
• Offset voltage temperature drift adjustment 1st order coefficient
- Adjustment range to ±1.23mV/ºC
- Adjustment step to 4.8uV/ºC
• Output span voltage adjustment G1, G2, G3 - Total adjustment range to 261.6mV
- G1 adjustment step :
to 74.7mV /step
- G2 adjustment step :
to 130.8mV /step
- G3 adjustment step :
to 0.40mV /step
• Sensitivity temperature drift adjustment 1st order coefficient
- Adjustment range -4000ppm/ºC to +2500ppm/ºC or -2500ppm/ºC to +1000ppm/ºC
- Adjustment step 18ppm/ºC step
• Integrated output reference voltage adjustment function
- Adjustment range 0.02*VDD to 0.98*VDD
- Adjustment step 10mV /step
• Integrated sampling frequency switching function 1kHz, 10kHz
• Integrated analog circuit reference voltage stabilizer Add an external capacitor to AGND pin as needed
• SCF and SMF included for band limitation fc:1.0kHz, 500Hz, 250Hz
• 2 wire serial interface CSCLK, VOUT
• Ratiometric voltage output
• Integrated constant voltage source for pressure sensor 2.2V 3.3V±5% 4.0V or 2.2V 5.0V±5%
• Integrated pressure detectors x2
- Detection threshold adjustment control
- Adjustment range 0.125*VDD to 0.9*VDD
- Adjustment step 0.025*VDD /step - Detection threshold external setting function DET2 / PTH pin use
- hysteresis voltage adjustment control
- Adjustment range 0.03*VDD to 0.06*VDD
- Adjustment step 0.01*VDD /step
• Integrated reference voltage & reference current generator
- VREF voltage adjustment control
- Resolution 3bits - Adjustment step 1% /step

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Datasheet ID: AK8998D 515931