Nanochap Nine Senses Series BAF003 Analog Front-end in Wearable Sweat Sensor, Small Size, Long Life

With the rapid development of wearable technology, wearable sweat sensors, as a new type of physiological parameter monitoring means, have been more and more widely used in the fields of health management, sports science, and medical treatment. Nanochap's Nine Senses Series BAF003 analog front-end has become a leader among wearable sweat sensors with its excellent performance and stability. In this paper, Nanochap will focus on the use of the Nine Senses Series BAF003 analog front-end in wearable sweat sensor.

First of all, the high-precision measurement capability of the Nine Senses Series BAF003 analog front-end provides strong technical support for the detection of sweat composition. Since human sweat contains a variety of physiological indicators of information, such as electrolytes, pH, glucose, etc., the changes in these indicators can reflect the health status of the human body. Nine Senses Series BAF003 analog front-end can accurately measure these indicators, providing a reliable database for real-time monitoring of human health.

Secondly, the Nine Senses Series BAF003 analog front-end also has the characteristic of low power consumption, which enables the wearable sweat sensor to maintain stable performance during long-time monitoring. Since human sweat secretion is continuous, it is necessary to continuously monitor sweat composition for a long time. The Nine Senses Series BAF003 analog front-end has a leakage of less than 15nA in standby mode and a continuous sampling power consumption of less than 40μA, which greatly extends the endurance time of the wearable sweat sensor.

In addition, the Nine Senses Series BAF003 analog front-end adopts advanced WLCSP packaging technology, which makes its volume only 2.4mm*2.48mm. For wearable products, the small volume design is not only convenient to be integrated into a variety of devices but also more in line with the ergonomics and comfort requirements. This makes the Nine Senses Series BAF003 analog front-end more comfortable to use in wearable sweat sensors, providing a more convenient and covert way to monitor human health.

The use of the Nine Senses Series BAF003 analog front-end in wearable sweat sensors is also reflected in its intelligence and ease of use. By combining with advanced artificial intelligence algorithms, the Nine Senses Series BAF003 analog front-end can analyze sweat composition data in real-time and provide users with feedback and suggestions about their physical condition. In addition, the Nine Senses Series BAF003 analog front-end supports a variety of communication protocols, which makes it easy for users to connect and synchronize the measurement data with their cell phones, tablets, and other devices, improving the scalability and ease of use of the device.

In terms of security, the Nine Senses Series BAF003 analog front-end adopts a variety of safety mechanisms such as over-current protection, over-temperature protection, etc., to ensure that the device can automatically shut down or adjust the working state in abnormal situations, thus protecting the user's safety.

In summary, the use of the Nanochap Nine Senses Series BAF003 analog front-end on wearable sweat sensors is of great significance. It not only improves the measurement accuracy and stability of the device but also makes the device more intelligent and easy to use. In the future, with the continuous development and popularization of wearable technology, the Nine Senses Series BAF003 analog front-end will play a more important role in the wearable sweat sensor and other fields, and make greater contributions to human health.

(BAF003 chip structure diagram)

Nanochap Nine Senses Series BAF003 Analog Front-end Advantages and Features

1. Support 3V power supply application

2. Chip leakage in disabled mode is less than 15nA

3. Ultra-low noise, high signal-to-noise ratio, two-stage programmable amplifier

4. Acquisition circuit noise is less than 6μV

5. Conversion accuracy of the effective number of bits to 16bit

Product Parameters

Supply voltage: 2.8V～3.6V

Package and size: WLCSP (2.4mm X 2.48mm)

Op-amp bias voltage on-chip DAC (0.3V to 2V)

Op-amp Noise: 2.2μV (0.1~10Hz)

On-chip TIA feedback resistor: 200K ~ 10M 16 steps

Programmable Gain Amplifier: First Stage (1, 2, 3, 4, 8, 16, 32) Second stage (1, 2, 3, 4)

ADC precision: 16bit

Chip sleep power consumption: <15nA

Standby current: <4μA

Continuous sampling power consumption: <40μA

Temperature Sensor: 0.1℃ accuracy