AK8996
AK8996 Datasheet
[AK8996/W]
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AK8996 |
AK8996 (pdf) |
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AK8996W |
AK8996W |
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| [AK8996/W] AK8996/W Pressure Sensor Interface IC The AK8996 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 AK8996. The AK8996 is available in either a 16-pin QFN package or in wafer form. • Pressure sensor compensation and excitation IC Analog output • Low power consumption 350µA typ. 100Hz sampling • Standby function: 1µA max. • Low-voltage operation: to 3.6V, 5V±10% • Operating temperature range -40 to 105ºC • Integrated span voltage switching function by a factor of 5, typ. - Resolution: Gain Amp. 1 3-bits Gain Amp. 2:1-bit Adjustment step factor of 1/step by a factor of 2 to 9 ; factor of 1/step by a factor of 1 and 2 • Integrated sensor output compensation • Offset voltage adjustment - Resolution: Rough 4-bits Fine 7-bits - Adjustment step Rough 7.5%/step Fine 0.125%/step 5.0V • Offset voltage temperature drift adjustment 1st/2nd order coefficient - Resolution: 10-bits 8-bits - Adjustment step 0.196%/step 0.787%/step • Output span voltage adjustment - Resolution: 9-bits - Adjustment value 100/[100+0.25*N] % N -256 to +255 • Sensitivity temperature drift adjustment 1st/2nd order coefficient - Resolution: 10-bits 8-bits - Adjustment step 0.196%/step 0.787%/step • Integrated output reference voltage switching function - Resolution: Rough 5-bits Fine 6-bits - Adjustment step 0.0005*VDD/step 0.0785*VDD to 0.9215*VDD • Integrated criteria adjustment function for determining positive/negative pressure - Resolution: 10-bits - Adjustment step 0.001*VDD/step 0.05*VDD to 0.95*VDD |
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