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Bosch Sensortec - Model BMA580 -Acceleration Sensor
The BMA580 is an advanced voice activity detection accelerometer from Bosch Sensortec, designed for use in highly compact devices such as hearables. Measuring just 1.2 x 0.8 x 0.55 mm³, it is the world's smallest accelerometer with built-in speech processing capabilities through bone conduction. This sensor features unique power mode options, optimizing power consumption by ensuring the microphone activates only for necessary voice detection. Its minimal size aids in easy integration into space-constrained devices, enhancing the functionality of hearable products by offering reliable voice detection and user interaction. The BMA580 is suitable for innovative applications where space and efficiency are critical, serving as a significant component in the development of next-generation auditory and communication devices.
Stylish and minimalistic hearables offer little space for powerful components. The next-generation accelerometer with unique voice activity detection through bone conduction and advanced power mode features is the world’s smallest acceleration sensor (1.2 x 0.8 x 0.55 mm³). It is especially designed for compact devices such as hearables requiring the smallest components. BMA580 ensures that the microphone is turned on only if necessary to detect voice activity and save power.
- Package dimensions (typ.) : 1.2 x 0.8 x 0.55 mm³ Wafer level chip scale package
- Digital Resolution : 16 bit
- Measurement ranges : ±2, ±4, ±8, ±16 g
- Output data rate : ~1.56 Hz … 6.4 kHz
- Offset soldered, over lifetime : ± 50 mg
- TCO : ± 0.2 mg/K
- Sensitivity Error : 0.5%
- Noise density : 120 µg/√Hz
- Current consumption (high perf, continuous measurement) : 125 µA
- Current consumption (low power@ 100 Hz) : 18 µA
- Current consumption (suspend mode, data retention) : 4.75 µA
- Interface :
- I³C, I²C and SPI
- 2 Interrupt Pins (I²C mode)
- 1 Interrupt Pin (3-wire SPI)
- Power modes :
- High perf. mode, Low power mode (LPM)
- Self-wake-up: LPM to High perf. mode
- FIFO : 1 KB (incl. FIFO full, FIFO watermark interrupt)
- Interrupts :
- Data Ready interrupt
- 3 generic interrupts, incl. Any-/No-motion
- Tap/Double Tap/ Triple Tap
- Voice activity detection
- Supports in-ear/out-ear algorithm