Wearable health monitoring products open up incremental market opportunities

Vital Sign Monitoring (VSM) functions are increasingly integrated into smartphones, smartwatches, headphones, and other wearable devices. These devices can measure vital signs and health indicators, such as body temperature, heart rate, respiration, blood oxygen saturation (SpO2), blood pressure, blood glucose, and body composition. They play a crucial role in actively monitoring health conditions and contribute to the development of wearable devices with true medical-grade applications.

Body temperature monitoring has always been a key health indicator. Fluctuations within the normal temperature range reflect the body's balance, while abnormal body temperature readings help detect irregularities, enabling real-time self-awareness of physical conditions and physiological cycles. This can facilitate health assessments and early disease diagnoses, especially for specific populations (athletes, sick individuals, elderly people), where systematic temperature monitoring data can be formed. This presents new challenges for the "human body temperature sensing chip" at the front-end detection stage.

For wearable devices to achieve accurate body temperature measurement, which temperature sensor IC solutions are the most precise? What are the breakthroughs in temperature sensor chip technology in this technological revolution? What commercial application scenarios will technological innovations open up?

Body Temperature Monitoring Becomes an Essential Value-Added Function for Wearables

Using the human body temperature sensor chip GXT310 from Zhongke Galaxy as an example, we analyze the above issues. Through in-depth insight into the demand for body temperature sensors, we find that due to space limitations within wearable devices, the hardware products must be small in size, highly precise, low power consumption, and fast in data transmission.

First, precision is a key indicator of effective innovation in sensor technology. The typical accuracy of the GXT310 is ±0.1°C (according to medical thermometer regulations, the maximum allowed error for electronic thermometers in the range of 35.3°C to 41.0°C is ±0.2°C, with a value of <0.1°C in the 37°C-39°C range), fully meeting the medical standards for body temperature monitoring products.

Secondly, the sensor must have a fast response speed, small size, and high reliability. The GXT310’s packaging area is just 0.73x0.73 millimeters. Such a tiny size allows for rapid heat conduction while minimizing self-heating, making it ideal for wearable devices and medical-grade body temperature measurement applications.

Considering the differences between wrist, ring, and armpit temperature measurements in wearable devices, we recommend using two temperature sensors to separately measure ambient and skin temperature. By compensating for these readings, more accurate temperature data can be obtained. The GXT310 supports two-wire communication and can support up to eight slave devices. It is compatible with most MCU and SoC interfaces such as I2C or SMBus, fully meeting the selection requirements for wearable devices. It is one of the most suitable solutions for wearable devices today.

EASTECH's Temperature Sensor ICs

EASTECH specializes in electronic components, integrated circuit chips, PCB/PCBA, SMT/DIP, and OEM/ODM, and provides one-stop services. The company offers 100% brand-new original products, direct sources with fast delivery, supports payment and collection services, and provides a professional service team to ensure customer satisfaction from pre-sales to after-sales.

Below are EASTECH's featured 100% in-stock original temperature sensor IC models:

Texas Instruments (TI): TMP36, TMP102, TMP103, TMP275, LM35, LM36, LM75, LM74, LM84, TMP37.

Analog Devices: ADT7420, ADT7320, ADT7310, ADT7317, ADT7322, ADT7460, ADT7480, LTC2983, LTC2984, ADT7410. Microchip Technology: MCP9808, MCP9700, MCP9701, MCP9800, MCP9804, MCP9702, MCP9703, MCP9809, MCP9806, MCP9706. STMicroelectronics: TSYS01, TSYS02, TS3300, STTS751, STTS22H, STTS75, LPS25HB, LPS22HB, LPS33HW, STM32. NXP Semiconductors: LM75, LM74, TSIC306, TSIC307, KTY81, KTY84, NCT75, NCT77, KTY83, LMT70. Zhongke Galaxy: GXT310, GXT311, GXT312, GXT313, GXT314, GXT315, GXT320, GXT321, GXT322, GXT323. On Semiconductor: LM94022, LM94021, NCT1110, NCT1111, NCT1112, NCT1113, NTC5001, NTC5002, NTC5003, NTC5004. Maxim Integrated: MAX30205, MAX30208, MAX30210, MAX31855, MAX31856, MAX30201, MAX6624, MAX6630, MAX6675, MAX6678, Honeywell, HIH5030, HIH5031. HTPA Series: T5500, T5501, T5502, HLM88 Series, HTU21D, HDC1080, HDC2080. Bosch Sensortec: BME280, BMP280, BME680, BME688, BMP180......