Analog Devices / Maxim Integrated MAX30001 Biopotential Analog Front-End Solution
Analog Devices MAX30001 Biopotential Analog Front-End (AFE) Solution is a complete, biopotential, and bioimpedance (BioZ) AFE solution ideal for wearable applications. The high-performance MAX30001 has ultralow power for long battery life and can be used for clinical and fitness applications. The Analog Devices MAX30001 is a single biopotential channel providing electrocardiogram (ECG) waveforms, heart rate, and pacemaker edge detection.
The device also has a single bioimpedance channel capable of measuring respiration. The biopotential and bioimpedance channels have ESD protection, EMI filtering, internal lead biasing, DC leads-off detection, ultralow-power leads-on detection during standby mode, and extensive calibration voltages for built-in self-test.
Soft power-up sequencing ensures no large transients are injected into the electrodes. Both channels also have high input impedance, low noise, high CMRR, programmable gain, various low-pass and high-pass filter options, and a high-resolution analog-to-digital converter.
Features
- Clinical-Grade ECG and BioZ AFE with High-Resolution Data Converter
- 15.9 Bits ENOB with 3.1μVPP (typ) Noise for ECG
- 17 Bits ENOB with 1.1μVPP Noise for BioZ
- Better Dry Starts Due to Much Improved Real World CMRR and High Input Impedance
- Fully Differential Input Structure with CMRR > 100dB
- Offers Better Common-Mode to Differential Mode Conversion Due to High Input Impedance
- High Input Impedance > 1GΩ for Extremely Low Common-to-Differential Mode
- Minimum Signal Attenuation at the Input During Dry Start Due to High Electrode Impedance
- High DC Offset Range of ±650mV (1.8V, typ) Allows to Be Used with a Wide Variety of Electrodes
- High AC Dynamic Range of 65mVPP for ECG and 100mVPP for BioZ Will Help Prevent Saturation in the Presence of Motion/Direct Electrode Hits
- Longer Battery Life Compared to Competing Solutions
- 85μW at 1.1V Supply Voltage for ECG
- 158μW at 1.1V Supply Voltage for BioZ
- 32-Word ECG and 8-Word BioZ FIFOs Allow the MCU to Stay Powered Down for 256ms with Full Data Acquisition
- Leads-On Interrupt Feature Allows to Keep μC in Deep Sleep Mode Until Valid Lead Condition is Detected
- Lead-On Detect Current: 0.7μA (typ)
- Built-In Heart Rate Detection with Interrupt Feature Eliminates the Need to Run HR Algorithm on the μController
- Robust R-R Detection in High Motion Environment at Extremely Low Power
- Configurable Interrupts Allows the μC Wake-Up Only on Every Heart Beat Reducing the Overall System Power
- High Accuracy Allows for More Physiological Data Extractions
- High-Speed SPI Interface
- Shutdown Current of 0.5μA (typ)
Applications
- Single-Lead Event Monitors for Arrhythmia Detection
- Single-Lead Wireless Patches for In-Patient/Out-Patient Monitoring
- Chest Band Heart Rate Monitors for Fitness Applications
- Bio Authentication and ECG-On-Demand Applications
- Respiration and Hydration Monitors
- Impedance Based Heart Rate Detection
Associated Development Tool
Analog Devices / Maxim Integrated MAX30001EVSYS Evaluation System
Used to evaluate the functionality and features of the MAX30001.
Videos
Functional Diagram
Published: 2017-10-25
| Updated: 2023-04-12