High-Precision Body Composition Analyzer Solution
This turnkey solution provides a precision MCU platform for comprehensive bio-impedance analysis (BIA), making it ideal for smart body scales and professional composition analyzers used in weight management and fitness tracking.
Solution Overview
By leveraging true AC sine-wave excitation and hardware-based IQ demodulation, this highly integrated SoC platform overcomes the precision limitations of traditional BIA methods. It combines a 24-bit weight ADC with a high-performance impedance engine, delivering clinical-grade accuracy for detailed body composition analysis in a compact, cost-effective design.
Application Areas
- Smart body composition scales
- Professional fitness assessment devices
- Medical body composition analyzers
- Multi-parameter health monitoring platforms
- 8-Electrode Segmental Analyzers
- Professional Fitness Assessment Devices
Application Block Diagram
Dual-Core Measurement
Combines a 24-bit weight ADC with a dedicated BIA hardware engine for clinical-grade body composition metrics.
Simplified Circuitry
Integrates LDO, EEPROM, and LED drivers into a single chip to minimize PCB footprint.
IoT Ready
Built-in UART, SPI, and I2C interfaces for effortless integration with Bluetooth (BLE) or Wi-Fi modules.
Core Features & Benefits
High-Precision BIA Measurement
24-bit ADC with integrated bio-impedance AFE enables ±1% impedance accuracy across 50Ω~1.5KΩ range, supporting multi-segment and multi-frequency analysis.
Ultra-Low Power Design
Sleep current <1.5μA, measurement current ~10mA. Supports 4×AAA batteries for 500+ measurements, ideal for smart scales.
Highly Integrated SoC
Built-in BIA AFE, excitation signal generator, weight sensor interface, LCD driver, and temperature sensor reduce external components by 35%.
Advanced Body Composition Algorithms
Comprehensive algorithm library for body fat %, muscle mass, bone mass, BMI, BMR, visceral fat, and hydration level calculation.
Smart Reliability Electrode Disconnection Detection
automatically identifies contact issues to ensure consistent and valid data.
Seamless Connectivity IoT-Ready Interfaces
(UART/SPI/I2C) for effortless synchronization with BLE/Wi-Fi modules and mobile apps.
Recommended MCU Products
Select the optimal chip model based on your product requirements
BH66F2665
RECOMMENDEDBody Fat Measurement Flash MCU
📊 Key Specifications
✨ Features
- Professional Bio-Impedance AFE
- Medical-Grade Weighing Precision
- Smart Direct-Drive LED Driver
Development Support & Resources
Comprehensive development resources to accelerate your time-to-market
Reference Design
Complete body composition scale reference design with schematics and PCB.
SDK & Drivers
BIA AFE drivers, weight sensor interface, and sample code.
Algorithm Library
Body composition calculation algorithms (body fat, muscle, BMI, BMR, etc.).
Development Tools
Programmer/debugger and configuration tools.
Technical Documentation
Datasheets, application notes, and BIA design guidelines.
Training & Webinars
Body composition analyzer design training and webinars.
Need More Technical Support?
Our technical team is ready to provide professional consultation and customized solutions
Frequently Asked Questions
What body composition metrics can be measured?
Our solution supports comprehensive metrics including body fat percentage, muscle mass, bone mass, body water, BMI, BMR, visceral fat level, and phase angle analysis.
What is the difference between single-frequency and multi-frequency BIA?
While basic solutions use a single 50kHz frequency, our BH66F2665-based platform supports a wide-band excitation from 1kHz to 500kHz. This enables more accurate differentiation between intracellular and extracellular water, which is critical for medical-grade segmental analysis.
Does the solution support 8-electrode segmental analysis?
Yes. The BH66F2665 features an integrated body fat measurement circuit that supports both 4-electrode and 8-electrode configurations. This allows for independent analysis of the trunk and each limb for a complete body composition profile.
What are the technical advantages of the BH66F2665 ADC?
Our solution utilizes a high-performance 24-bit Σ-Δ ADC with a resolution of 1μV and an Effective Number of Bits (ENOB) greater than 20 bits. This provides medical-grade precision for both weight sensing and impedance measurement.
How does this solution reduce BOM costs and improve display quality?
The SoC integrates a specialized LED Driver with 4-level adjustable constant current. This allows the MCU to drive the LED panel directly, eliminating the need for external resistors and transistors while ensuring consistent display brightness.
Is smartphone connectivity supported?
Yes. Through the integrated UART, SPI, and I2C interfaces, the platform provides seamless connectivity with BLE or Wi-Fi modules (such as the HT32F67593) for real-time data synchronization with mobile applications.