Press release #Sensortec

Many applications made easy: Bosch launches cost-effective motion sensor BMI323

Inertial Measurement Unit (IMU) delivers high accuracy and power efficiency for new consumer use cases

  • Motion sensor with no compromises on precision and performance
  • Integrated features simplify and accelerate product development
  • New opportunities for IMUs in diverse consumer applications

Constantin Schmauder


The BMI323’s combination of simplicity with an excellent price-performance ratio will open up new applications for IMUs

said Dr. Stefan Finkbeiner, CEO at Bosch Sensortec.

Tiny MEMS motion sensors are all around us. They make consumer products easier to use and improve how our smartphones and other gadgets interact with us. These sensors are precise, compact and power-efficient, however, until now, they have been complex for basic applications. To address this issue, Bosch Sensortec is launching the BMI323, an affordable Inertial Measurement Unit (IMU) with excellent performance and integrated features enabling a shorter development time.

"The BMI323’s combination of simplicity with an excellent price-performance ratio will open up new applications for IMUs," said Dr. Stefan Finkbeiner, CEO at Bosch Sensortec. "These will include standard consumer products, such as toys, gaming controllers, remote controls, wearables, fitness trackers, smartwatches as well as tablets and laptops."

Like its predecessor BMI160, the new BMI323 is a general-purpose, low-power IMU that combines precise acceleration and angular rate (gyroscopic) measurement with intelligent integrated features that are triggered by motion.

Its integrated features make development faster and easier for OEMs. For example, the BMI323 already includes Bosch Sensortec’s plug-and-play step counter software, so customers don’t need to spend time developing their own algorithms. Other features include motion detection that can turn subsystems on or off when a device, such as a TV remote control, is put down or picked up, thus reducing overall power consumption.

Compared to the BMI160, the BMI323 provides improved accelerometer performance as well as lower power consumption. In high-performance mode, using both the gyroscope and the accelerometer, the BMI323 has a current consumption of 790µA compared to 925µA on the BMI160, which represents a reduction of nearly 15%.

The 6-axis BMI323 has a self-calibrating 16-bit triaxial gyroscope, a 16-bit triaxial accelerometer, and a 16-bit digital temperature sensor housed in a miniature 2.5 x 3.0 x 0.83 mm3 (14-pin) LGA package that is pin to pin compatible with the BMI160 and others. The BMI323 is the first IMU device announced by Bosch Sensortec to include the new I3C interface, in addition to the I2C and SPI interfaces.

The BMI323 is available now.


Contact person for press inquiries:
Katharina Sorg
phone: +49 711 811-26074

Twitter: @BoschMEMS

Bosch Sensortec GmbH, a fully owned subsidiary of Robert Bosch GmbH, develops and markets a wide portfolio of microelectromechanical systems (MEMS) sensors and solutions tailored for smartphones, tablets, wearables and hearables, AR/VR devices, drones, robots, smart home and IoT (Internet of Things) applications. The product portfolio includes 3-axis accelerometers, gyroscopes and magnetometers, integrated 6- and 9-axis sensors, smart sensors, barometric pressure sensors, humidity sensors, gas sensors, optical microsystems and comprehensive software. Since its foundation in 2005, Bosch Sensortec has emerged as the MEMS technology leader in the markets it addresses. Bosch has been both a pioneer and one of the leading providers in the MEMS sensor segment since 1995 and has, to date, sold more than 18 billion MEMS sensors.

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The Bosch Group is a leading global supplier of technology and services. It employs roughly 429,000 associates worldwide (as of December 31, 2023). The company generated sales of 91.6 billion euros in 2023. Its operations are divided into four business sectors: Mobility, Industrial Technology, Consumer Goods, and Energy and Building Technology. With its business activities, the company aims to use technology to help shape universal trends such as automation, electrification, digitalization, connectivity, and an orientation to sustainability. In this context, Bosch’s broad diversification across regions and industries strengthens its innovativeness and robustness. Bosch uses its proven expertise in sensor technology, software, and services to offer customers cross-domain solutions from a single source. It also applies its expertise in connectivity and artificial intelligence in order to develop and manufacture user-friendly, sustainable products. With technology that is “Invented for life,” Bosch wants to help improve quality of life and conserve natural resources. The Bosch Group comprises Robert Bosch GmbH and its roughly 470 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. Bosch’s innovative strength is key to the company’s further development. At 136 locations across the globe, Bosch employs some 90,000 associates in research and development, of which nearly 48,000 are software engineers.

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