LC09A Chip Overview
LC09A is an advanced health-monitoring sensor chip designed specifically for smart wearables such as smartwatches and fitness bands. It supports key functions including daily heart-rate monitoring and wear detection.
Key Technical Advantages & Performance
Ultra-Low Power Design
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Heart-rate mode: Typical current only 80 µA (including LED emission) at 25 Hz sampling.
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Not-worn state: Only 5 µA at 1 Hz sampling.
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Sleep mode: Extremely low current consumption of just 400 nA.
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Intelligent Built-in Features
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Auto dimming to ensure measurement accuracy under varying ambient light.
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Automatic wear detection to improve user experience and optimize power consumption.
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FIFO Data Buffer
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Built-in 64-byte FIFO effectively reduces MCU read frequency and saves system resources.
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Efficient Communication Interface
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Standard I²C interface, up to 400 kHz.
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7-bit device address: 0x33.
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INT interrupt output for real-time data communication and processing.
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Flexible Power Options
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AFE (analog front end) supply, VDD: 3.0 V to 3.6 V (3.3 V recommended); supply ripple must be strictly controlled within 40 mV.
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I/O supply, VDDIO: 1.8 V to 3.6 V, adaptable to a wide range of host systems.
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Robust Electrical Characteristics & Application Compatibility
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Supports 13 skin-tone levels, ensuring monitoring accuracy across diverse complexions.
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Small algorithm footprint: heart-rate algorithm requires only 1.6 KB RAM and 9.8 KB ROM at 25 Hz sampling.
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Compact Package
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OLGA package, 1.95 mm × 1.9 mm × 0.6 mm, 8 pins, saving valuable internal device space.
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Typical Applications
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Wearable health-monitoring devices such as fitness bands and smartwatches.
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Heart-rate and wear-detection use cases.
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LC09A combines high integration with ultra-low power consumption, making it an ideal health-monitoring solution for smart wearables. For deeper technical support or detailed parameters, feel free to contact us—we’ll provide professional engineering assistance.
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