Features and Benefits

  • Compliant with PSI5 Communication Protocol Version 1.3
  • Asynchronous operation:
    Synchronous operation:
    PSI5-P10P-500/3L and others
    Daisy-chain operation with bidirectional communication
  • 10-bit sensor data
  • User configurable sensor range: ±30 g, ±60 g, ±120 g, ±240 g, ±480 g
  • 0.25 μs data interpolation routine
  • User-selectable, continuous auto-zero operation
  • Electromechanical sensor self-test
  • High resistance to EMI/RFI/BCI
  • 4.5 V to 16.5 V operation
  • Electronic serial number
  • Qualified for automotive applications

Product Details

The ADXL185B z-axis sensor and the ADXL189B x-axis sensor are g range configurable, integrated single-axis satellite sensors, compliant with the PSI5 Version 1.3 specification. The ADXL185B / ADXL189B enable low cost solutions for front and side impact airbag satellite sensor applications. Acceleration data is sent to the control module via a digital 2-wire current loop interface bus.

The sensor g range is configurable to provide full-scale ranges from ±30 g to ±480 g. The devices can also be configured to transmit data from multiple g ranges during predefined time slots, in accordance with the PSI5 specification. The devices transmit 10-bit acceleration data to the control module and can be configured to include either a 1-bit parity check or a 3-bit cyclic redundancy check (CRC). Each device has a unique electronic serial number.

The ADXL185B / ADXL189B are available in a 16-lead, narrow-body SOIC package with an exposed pad. The ADXL185B / ADXL189B are specified to operate over the full automotive temperature range of −40°C to +125°C.


  • Front impact crash sensing
  • Side impact crash sensing
  • Shock and vibration detection
  • Pedestrian collision sensing
A short-form datasheet for this product is available for download from this web page. For complete documentation and additional support, please contact your local Analog Devices sales office.

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.