MAX30004 Ultra-Low Power, Single-Channel Integrated Biopotential (R-to-R Detection) AFE General Description Benefits and Features The MAX30004 is a complete, biopotential, analog front- Heart Rate Detection with Interrupt Feature end solution for wearable applications. It offers high Eliminates the Need to Extract and Process the ECG performance for clinical and fitness applications, with Data on the Microcontroller ultra-low power for long battery life. The MAX30004 is a Robust R-R Detection in High Motion Environment single biopotential channel providing heart rate detection. at Extremely Low Power The biopotential channel has ESD protection, EMI filtering, Clinical-Grade Biopotential AFE with High-Resolution internal lead biasing, DC leads-off detection, ultra-low Data Converter power leads-on detection during standby mode. Soft power- 15.5 Bits Effective Resolution with 5V Noise P-P up sequencing ensures no large transients are injected Better Dry Starts Due to Much Improved Real World into the electrodes. The biopotential channel also has high CMRR and High Input Impedance input impedance, low noise, high CMRR, programmable Fully Differential Input Structure with CMRR > 100dB gain, various low-pass and high-pass filter options, and Offers Better Common-Mode to Differential Mode a high resolution analog-to-digital converter. The Conversion Due to High Input Impedance biopotential channel is DC coupled, can handle large High Input Impedance > 500M for Extremely Low electrode voltage offsets, and has a fast recovery mode Common-to-Differential Mode Conversion to quickly recover from overdrive conditions, such as Minimum Signal Attenuation at the Input During Dry defibrillation and electrosurgery. Start Due to High Electrode Impedance The MAX30004 is available in a 28-pin TQFN and High DC Offset Range of 650mV (1.8V, typ) Allows 30-bump wafer-level package (WLP), operating over the to Be Used with Wide Variety of Electrodes 0C to +70C commercial temperature range. High AC Dynamic Range of 65mV Will Help the P-P Applications AFE Not Saturate in the Presence of Motion/Direct Single Lead Wireless Patches for At-Home/ Electrode Hits In-Hospital Monitoring Longer Battery Life Compared to Competing Solutions Chest Band Heart Rate Monitors for Fitness Applications 85W at 1.1V Supply Voltage Leads-On Interrupt Feature Keeps C in Deep Sleep Ordering Information appears at end of data sheet. Mode with RTC Off Until Valid Lead Condition is Detected Lead-On Detect Current: 0.7A (typ) Configurable Interrupts Allows the C Wake-Up Only on Every Heart Beat Reducing the Overall System Power High-Speed SPI Interface Shutdown Current of 0.5A (typ) 19-8732 Rev 0 12/16MAX30004 Ultra-Low Power, Single-Channel Integrated Biopotential (R-to-R Detection) AFE Functional Diagram AVDD DVDD OVDD MAX30004 BIOPOTENTIAL CHANNEL CSB AAF INP SDI ESD, EMI , 14-BIT INPUT MUX , INPUT 18-BIT DECIMATION R-TO-R f-3dB PGA DC LEAD AMP ADC FILTER DETECTOR INN =600 Hz SCLK CHECK SPI INTERFACE -40dB/dec AND SDO REGISTERS FAST SETTLING INTB CAPP INT2B CAPN SUPPORT CIRCUITRY COMMON -MODE REFERENCE f FCLK CLK BUFFER BUFFER SEQUENCER BANDGAP BIASING PLL f HFC AGND VCM VBG VREF CPLL DGND Maxim Integrated 2 www.maximintegrated.com