Product overview
Description
The AIS1200DS is a satellite acceleration sensor with a single-axis sensing element and an IC interface capable of providing acceleration information to external applications through a 225 kbps DSI 2.02 interface.
The sensing element is manufactured using a dedicated process developed by ST to produce inertial sensors and actuators in silicon.
The IC interface is manufactured using a BCD SOI process that allows a high level of integration and specific control of parasitic currents.
The AIS1200DS acquisition chain is composed of a C/V converter, a full-differential charge amplifier, a 1st-order LPF @ 1.6 KHz, a 3rd-order LP Bessel filter @ 360 Hz and a second charge amplifier to adapt the dynamic range to SAR A/D converter input.
The differential capacitance of the sensor is proportional to the proof mass displacement; thus, by sensing the differential capacitance, the position of the sensor is determined. Since the mass position is known and the position is related to the input acceleration, the input acceleration can be easily deduced.
The device is available in a 300 mils plastic SOIC package with reverse frame forming for EMC enhancement, and has an operating temperature range from -40 °C to +125 °C.
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All features
- 6.5 to 30 V single-supply operation
- -20 V reverse battery survivability
- 10-bit data output DSI 2.02 compliant
- Embedded voltage regulator
- Customizable daisy-chain address
- Embedded self-test
- Automotive AEC-Q100 qualified
- ECOPACK®compliant
- Extended temperature range: -40 °C to +125 °C
Circuit Diagram
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STMicroelectronics - AIS1200DS
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