The device is designed to offer high performance for clinical and fitness applications, with ultra-low power for long battery life. It provides R-R intervals [broadly speaking, the beat-to-beat time] for heart rate detection.
The biopotential channel has ESD protection, EMI filtering, internal lead biasing, DC leads-off detection, ultra-low power leads-on detection during standby mode, and is equipped with extensive calibration voltages for built-in self-test. Soft power-up sequencing ensures no large transients are injected into the electrodes. The biopotential channel also has high input impedance, low noise, high CMRR, programmable gain, various low-pass and high-pass filter options, and a high-resolution analogue-to-digital converter. The biopotential channel is DC coupled, can handle large electrode voltage offsets, and has a fast recovery mode to quickly recover from overdrive conditions, such as defibrillation and electrosurgery.
The MAX30004 comes in a 28-pin TQFN or 30-bump wafer-level package (WLP), operating over the 0°C to +70°C commercial temperature range.
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