By Maxim Integrated 105
Maxim’s MAX30001CWV+ is an analog front end (AFE) solution that includes biopotential and bioimpedance (BioZ) for wearable applications. This solution was designed for fitness and clinical applications due to the high performance and ultra-low-power, which will extend battery life. It is available in a 30 WLP and can operate over 0°C to +70°C temperature range.
The MAX30001 can provide electrocardiogram (ECG) waveforms, heart rate, and pacemaker edge detection. This device also includes a single BioZ channel capable of measuring respiration. The biopotential and BioZ channels offer 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 (ADC). Both channels also have ESD protection, EMI filtering, internal lead biasing, DC leads-off detection, leads-on detection during standby mode, and extensive calibration voltages for built-in self-test. A soft power-up sequencing ensures no large transients are injected into the electrodes.
The biopotential channel is DC coupled and handles large electrode voltage offsets and has a fast recovery mode to quickly recover from overdrive conditions, such as defibrillation and electro-surgery. The bioimpedance channel also includes integrated programmable current drive, works with common electrodes, and has the flexibility for two or four electrode measurements. It also has AC lead-off detection.
Design Solutions - Take the Stress Out of Wearable Heart Monitoring
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