STMicroelectronics has introduced the market’s first 3-axis digital-output gyroscope that meets the industry-standard qualification for automotive integrated circuits (AEC-Q100). ST’s newest angular-rate sensor A3G4250D aims to add positioning accuracy and stability to a wide range of automotive applications, including in-dash navigation, telematics and vehicle tolling systems. ST’s A3G4250D gyroscope measures angular rates up to +/-250dps (degree per second). An on-chip IC interface converts the angular-motion data into a 16-bit digital bit stream that is transmitted with high reliability to a dedicated microcontroller chip through a standard SPI or I2C protocol. The device provides two output lines (interrupt and data ready) and four user-selectable output data rates.
The A3G4250D embeds an 8-bit temperature sensor and operates within an extended temperature range from -40 to 85°C. The device is robust to electromagnetic interference and withstands shocks up to 10,000g. ST’s 3-axis gyroscope for automotive applications has been designed and produced using the same manufacturing-process technology that ST has already successfully applied to 1.8 billion motion sensors sold in the market.
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