Analog Devices Inc./Maxim Integrated

The ADXL151 is agrange configurable single axis integrated satellite sensor, compliant to the PSI5 V2.1 specification. The ADXL151 enables 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 g range of the sensor is configurable to provide full-scale acceleration measurements of ±120g, ±240g, or ±480g. Additionally, the device can be configured to transmit data from multiple g ranges during predefined time slots, in accordance with the PSI5 specification. The device transmits 10- or 16-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). The ADXL151 has a unique electronic serial number.The ADXL151 is available in a 12-lead, 4 mm × 4 mm LFCSP package. The device is specified to operate over the full automotive temperature range, from −40°C to +125°C.APPLICATIONSFront impact crash sensingSide impact crash sensing

The ADXL195 /ADXL295are dual spectrum accelerometers that measure baseband acceleration in up to two axes (XL-X and XL-Y), as well as high frequency (HF) acceleration energy. Identical, independent X and Y sense structures are implemented to achieve the best possible fail-safe performance.The XL-X and XL-Y channels output baseband acceleration information with a nominal full-scale range of ±120 g and a bandwidth of 408 Hz. The acceleration data is provided as a 12-bit, twos complement word with a resolution of 62.5 mg/LSB.HF acceleration within the frequency band of 15.5 kHz to 23 kHz is rectified and filtered to generate an average g (gAVG) energy measurement. The HF channel has a nominal full-scale range of 40 gAVGand a bandwidth of 393 Hz. When combined with the XL-X and XL-Y information, HF acceleration information allows for enhanced vehicle impact detection and discrimination.The ADXL195 / ADXL295 are available in a 16-lead, narrow-body SOIC package with an exposed pad. The ADXL195 / ADXL295 can operate at 3.3 V and 5 V and are specified for operation from −40°C to +105°C.APPLICATIONSEnhanced crash sensingShock detection

The ADXL204 is a high precision, low power, complete dual-axis accelerometer with signal-conditioned voltage outputs, all on a single monolithic IC. Like the ADXL203, it measures acceleration with a full-scale range of ±1.7g; however, the ADXL204 is tested and specified for 3.3 V supply voltage, whereas the ADXL203 is tested and specified at 5 V. Both parts function well over a wide 3 V to 6 V operating voltage range. The ADXL204 can measure both dynamic acceleration (for example, vibration) and static acceleration (for example, gravity).The typical noise floor is 170 µg/√Hz, allowing signals below 2 mg (0.1° of inclination) to be resolved in tilt sensing applications using narrow bandwidths (<60 Hz).The user selects the bandwidth of the accelerometer using Capacitor CXand Capacitor CYat the XOUTand YOUTpins. Bandwidths of 0.5 Hz to 2.5 kHz can be selected to suit the application.The ADXL204 is available in a 5 mm × 5 mm × 2 mm, 8-terminal hermetic LCC package.APPLICATIONSVehicle dynamic control (VDC)/electronic stability program (ESP) systemsElectronic chassis controlsElectronic brakingPlatform stabilization/levelingNavigationAlarms and motion detectorsHigh accuracy, 2-axis tilt sensing

The ADXL206 is a precision, low power, complete dual-axisiMEMS®accelerometer for use in high temperature environments.The accelerometer integrates the sensor with signal conditioned voltage outputs on a single, monolithic IC. The ADXL206 measures acceleration with a full-scale range of ±5 g. The ADXL206 can measure both dynamic acceleration (for example, vibration) and static acceleration (for example, gravity).The typical noise floor is 110 μg/√Hz, allowing signals below 1 mg (0.06° of inclination) to be resolved in tilt sensing applications using narrow bandwidths (<60 Hz).The user selects the bandwidth of the accelerometer using Capacitors CXand CYat the XOUTand YOUTpins, respectively. Bandwidths of 0.5 Hz to 2.5 kHz can be selected to suit the application.The ADXL206 is available in a 13 mm × 8 mm × 2 mm, 8-lead, side-brazed ceramic dual in-line package (SBDIP).APPLICATIONSGeological exploration tilt and vibration measurementExtreme high temperature industrial products

The ADXL213 is a low cost, low power, complete dual axis accelerometer with signal conditioned, duty cycle modulated outputs, all on a single monolithic IC. The ADXL213 measures acceleration with a full-scale range of ±1.2g(typical). The ADXL213 can measure both dynamic acceleration (e.g., vibration) and static acceleration (e.g., gravity).The outputs are digital signals whose duty cycles (ratio of pulse width to period) are proportional to acceleration (30%/g). The duty cycle outputs can be directly measured by a microcontroller without an A/D converter or glue logic.Innovative design techniques are used to ensure high zero g bias stability (typically better than 0.25 mg/°C), as well as tight sensitivity stability (typically better than 50 ppm/°C).The typical noise floor is 160 μg/√, allowing signals below 1 mg(0.06° of inclination) to be resolved in tilt sensing applications using narrow bandwidths (<60 Hz).The user selects the bandwidth of the accelerometer using capacitors CXand CYMat the XFILTand YFILTpins. Bandwidths of 0.5 Hz to 250 Hz may be selected to suit the application.The ADXL213 is available in a 5mm x 5mm x 2mm, 8-pad hermetic LCC package.ApplicationsAutomotive tilt alarmData projectorsNavigationPlatform stabilization/levelingAlarms and motion detectorsHigh accuracy, 2-axis tilt sensing

The ADXL251 is a dual-axis, integrated satellite sensor with user selectablegranges, compliant to the PSI5 Version 2.1 airbag substandard, and backwards compliant to PSI5 Version 1.3. The ADXL251 (x-axis/y-axis) enables low cost solutions for front impact and side impact airbags, as well as satellite sensor and electronic control unit (ECU) main sensor applications. Acceleration data is sent to the control module via a digital, 2-wire current loop PSI5 bus. Communication via the SPI bus is also available for ECU applications.The device uses an ECC protected one time programmable (OTP) memory. The sensorgrange is configurable to provide full-scale measurement of ±60g, ±120g, ±240g, or ±480gacceleration. The user can program each axis independently with multiple g ranges in different time slots. In PSI5 mode, there are four programmable time slots available. The device transmits 16-bit or 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).The ADXL251 is available in a 4 mm × 4 mm LFCSP package and is specified to operate over the full automotive temperature range, −40°C to +125°C.ApplicationsFront impact crash sensingSide impact crash sensing

The ADXL252 is a dual-axis, integrated satellite sensor with user selectable g ranges, compliant to the PSI5 Version 2.1 airbag substandard, and backwards compliant to PSI5 Version 1.3. The ADXL252 (x-axis/z-axis) enables low cost solutions for front impact and side impact airbags, as well as satellite sensor and electronic control unit (ECU) main sensor applications. Acceleration data is sent to the control module via a digital, 2-wire current loop PSI5 bus. Communication via the SPI bus is also available for ECU applications.The device uses an ECC protected one time programmable (OTP) memory. The sensor g range is configurable to provide full-scale measurement of ±60g, ±120g, ±240g, or ±480gacceleration. The user can program each axis independently with multiple g ranges in different time slots. In PSI5 mode, there are four programmable time slots available. The device transmits 16-bit or 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).The ADXL252 is available in a 4 mm × 4 mm LFCSP package and is specified to operate over the full automotive temperature range, −40°C to +125°C.APPLICATIONSFront impact crash sensingSide impact crash sensing

The ADXL288 is a dual-axis accelerometer with signal-conditioned outputs available via a 16-bit SPI interface. Identical, independent X and Y sense structures are implemented to create a high performance, high integrity acceleration sensing system.The X and Y acceleration channels have a nominal full-scale range of ±120gand a bandwidth of 408 Hz. The acceleration data is provided as a 12-bit, twos complement word with a resolution of 62.5 mg/LSB.The ADXL288 is available in a 16-lead, narrow-body SOIC package with an exposed pad. The ADXL288 can operate at 3.3 V and 5 V and is specified for operation from −40°C to +105°C.APPLICATIONSImpact sensingShock detection