Wearable BLE EMG Device Development & Validation

Precision signals. Reliable performance.

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Project Overview

A client approached us to develop a compact, wearable EMG device capable of accurate, continuous biological signal monitoring with Bluetooth Low Energy (BLE) connectivity. The solution required integrating a 4-channel analog front-end with high signal precision while ensuring low power consumption, stable wireless communication, and a production-ready hardware design. Built using TI ADS1294 ADC and Nordic nRF52840 MCU, the device was engineered to deliver reliable performance in real-world conditions, balancing signal accuracy, battery life, and compact form factor. Below are key requirements:

High-Precision Signal Acquisition

Accurate 4-channel analog data capture for EMG and bio-signal monitoring

Low-Power Wearable Design

Optimized for extended battery life in compact wearable form design well with efficiency focus

Reliable BLE Connectivity

Stable real-time wireless data transmission for continuous monitoring on

Business Challenges

Developing a wearable EMG device requires addressing challenges across signal accuracy, power efficiency, hardware miniaturization, and system reliability. Ensuring medical-grade performance in a compact, battery-operated design introduced significant complexity in both analog and digital domains.

Low-Noise Signal Acquisition

Capturing precise EMG signals while minimizing noise and interference.

Analog & Digital Signal Integrity

Maintaining stable data across ADC, SPI communication, and processing pipeline.

Power Optimization & Battery Life

Ensuring long-duration operation within strict power and thermal constraints.

Compact Wearable Design

Designing a small form-factor PCB without compromising performance.

BLE Connectivity & Stability

Achieving reliable, low-power wireless data transmission in real time.

Silicon Signals’ Solution

Silicon Signals developed a low-noise, power-optimized wearable EMG system, combining robust analog design, efficient power management, and reliable BLE connectivity to deliver a production-ready solution.

Analog Front-End Design

Optimized ADS1294-based design for accurate, low-noise signal acquisition.

Signal Integrity Optimization

Careful routing, filtering, and shielding to minimize noise and interference.

Power Management Design

Efficient battery charging and regulation for stable, long-duration operation.

BLE Integration

Reliable, low-power wireless communication for real-time data transmission.

PCB & Layout Optimization

4-layer PCB with isolated analog/digital sections for improved performance.

Testing & Validation

Prototype testing and validation for accuracy, stability, and reliability.

Engineering Facts That Matter

Build high-precision wearable medical devices with confidence.

Ultra-low noise signal acquisition
< 0 µV
Continuous battery operation
0 Hours
Stable power ripple performance
< 0 mV

Build your next wearable medical device with confidence.

From prototype to validated, production-ready hardware

Tech Stack

Hardware

TI ADS1294 ADC, Nordic nRF52840 MCU, compact 4-layer PCB

Analog & Power Design

Low-noise front-end with optimized power management

Connectivity

Bluetooth Low Energy (BLE) for real-time data transmission

Tools & Validation

Oscilloscope, multimeter, spectrum analyzer, signal testing

Proven Outcomes

Delivered a high-precision, low-power wearable EMG device, ensuring reliable signal acquisition, stable performance, and production readiness.

Low-Noise Signal Performance

Noise reduced from ~100 µV to <10 µV for accuracy high

Stable Power & Reliability

Achieved <10 mV ripple for consistent ADC performance.

Extended Battery Life

Enabled 48-hour continuous operation for wearable use.

Reliable BLE Communication

Ensured stable, real-time wireless data transmission.

Error-Free Data Acquisition

Eliminated SPI errors and ensured reliable data capture

Production-Ready Delivery

Validated design with successful pilot manufacturing.

Let’s build high-precision wearable medical devices together

If you're developing a wearable EMG or bio signal monitoring device, we help you deliver low-noise, power-efficient, and production-ready solutions.

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