ADXL180

NOT RECOMMENDED FOR NEW DESIGNS

Configurable, High-g, iMEMS^® Accelerometer

Data Sheet (Rev. B) Product Selection Table

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Overview

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

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 compatibility with various automotive interface bus standards.

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.

Applications