In this era of increasing health awareness, body composition analyzers, as an important tool for assessing individual health conditions, are undergoing unprecedented technological innovation. Nanochap's physiological signal analog front-end chip, the BAF003, brings new life to the field of body composition analyzers with its outstanding performance and innovative technical design.

The BAF003 is an ultra-low power analog front-end (AFE) chip designed to capture physiological signals. This chip provides a highly accurate monitoring solution for wearable products that continuously monitor a wide range of health parameters, including electrocardiogram (ECG), electromyogram (EMG), pulse pulse rate (PPG), body temperature, bioimpedance (BioZ), biomarkers, and more.

High Precision Bioimpedance Measurement

One of the core functions of a body composition analyzer is to assess the composition of body fluids through bioimpedance measurements. Conventional devices may have errors in data acquisition and processing, resulting in less accurate measurements. Especially for those with low body fat percentage or high muscle mass, it is often difficult for traditional devices to give an accurate assessment.

The BAF003 chip integrates a 16-bit high-precision ADC and a programmable amplifier that can accurately capture and amplify weak physiological signals. This feature enables the BAF003 chip-based body composition analyzer to provide more accurate measurement results, especially for key indicators such as body fat percentage and muscle mass.

Multi-functional health test integration

Many traditional devices only provide basic body fat measurements and are unable to provide comprehensive health data support. Users often need to go through multiple devices or multiple measurements to get a comprehensive health assessment. the BAF003 chip not only supports bio-impedance measurement, but also integrates a high-precision temperature sensor and other physiological signaling functions (ECG, EMG, PPG, etc.). This enables the body composition analyzer based on this chip to simultaneously monitor a variety of health indicators such as body temperature, heart rate, etc., providing users with more comprehensive health data support.

Ultra-low Power Consumption

Traditional body composition analyzers usually require high power consumption support in order to maintain stable measurement performance, which limits the device's endurance and is not conducive to prolonged use or portable designs. As a chip designed for wearables and portable medical devices, the BAF003 excels in power consumption control. Its power consumption is less than 100nA in sleep mode, less than 4μA in standby mode, and only about 35μA when the ADC is turned on for continuous sampling, which enables the body composition analyzer to have a longer lifespan to meet the user's needs for long-time use.

In practical applications, the BAF003-based body composition analyzer can provide users with a more accurate and convenient health monitoring experience. For example, in the gym or at home, users can simply place the device on the corresponding part of the body and start the measurement program to get a comprehensive body composition analysis report in a short time. At the same time, the device is also able to monitor the user's body temperature changes, heart rate and other physiological indicators in real time, providing strong support for the user's health management.

Nanochap Nine Senses Series BAF003 analog front-end advantages and features:

Supports 3V power supply applications

Chip leakage less than 15nA in disabled mode

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

Acquisition circuit noise less than 6μV

Conversion accuracy up to 16 bits

SPI communication interface

Product Parameters 

Supply voltage: 2.8V-3.6V

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

Op-amp bias voltage DAC adjustable range: 0.3V-2V, 10bit adjustment

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 system clock up to 64K, OSR range 32 - 2048, integrated FIFO for caching data, FIFO size 256x18bit

Chip disable mode: 15nA

Standby current: <4μA

Continuous sampling power consumption: <35μA

Temperature sensor: 0.3°C accuracy