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ADXL180 Configurable, High g, iMEMS Accelerometer Data Sheet (Rev. A)


DESCRIPTION The ADXL180 iMEMS accelerometer is a configurable, single axis, integrated satellite sensor that enables low cost solutions for front and side impact airbag applications. Acceleration data is sent to the control module via a digital 2-wire current loop interface bus. The communication protocol is programmable for The sensor g range is configurable to provide full-scale ranges from 50 g to 500 g. The sensor signal third-order, low-pass Bessel filter bandwidth is configurable at 100 Hz, 200 Hz, 400 Hz, and 800 Hz. The 10-bit analog-to-digital converter (ADC) allows either 8-bit or 10-bit acceleration data to be transmitted to the control module. Each part has a unique electronic serial number. The device is rated for operation from 40 C to +125 C and is available in a 5 mm 5 mm LFCSP package. FUNCTIONAL BLOCK DIAGRAM VBNVDDADXL180VBP3-POLEBESSELFILTERTRIMSBITADCVOLTAGEREGULATORCOMM INTERFACESERIALPORTSTATEMACHINESERIALNUMBERSUPPLYMONITORAUTO-ZEROSYNCDETECTPROGRAMINTERFACECONF FEATURES Wide sensor range: 50 g to 500 g Adjustable filter bandwidth: 100 Hz to 800 Hz Configurable communication protocol 2-wire, current mode bus interface Selectable sensor data resolution: 8 bit or 10 bit Continuous auto-zero Fully differential sensor and interface circuitry High resistance to EMI/RFI Sensor self-test 5.0 V to 14.5 V operation 8 bits of user-defined OTP memory 32-bit electronic serial number Dual device per bus option APPLICATIONS Crash sensing GENERAL DESCRIPTION The ADXL180 iMEMS accelerometer is a configurable, single axis, integrated satellite sensor that enables low cost solutions for front and side impact airbag applications. Acceleration data is sent to the control module via a digital 2-wire current loop interface bus. The communication protocol is programmable for The sensor g range is configurable to provide full-scale ranges from 50 g to 500 g. The sensor signal third-order, low-pass Bessel filter bandwidth is configurable at 100 Hz, 200 Hz, 400 Hz, and Specifications subject to change without notic

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CONNECTDAP1ADXL180TOP, TIMING2, AUTO-ZERO, LOW-PASS, ADXL180, DAP2, 52UD8, DAP1, 28ADXL180, TIMING4
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