EVALUATION KIT AVAILABLE MAX30112 Optimized Pulse-Oximeter and Heart Rate AFE for Wearable Health Receive Section General Description 19-bit Optical ADC Path to Support the Lowest The MAX30112 is a complete optical pulse oximetry and Perfusions Situations heart rate detection integrated analog front-end. The Low 25pA-RMS Input Referred Noise to Minimize MAX30112 has a high-resolution, optical readout signal- LED Power Under Most Conditions processing channel with built-in ambient light cancellation, High Ambient Light Input Range of 200A and as well as high-current LED driver DACs, to form a complete to Support Extraction of HRM Signal in the Most optical readout signal chain. With external LED(s) and Adverse Lighting Conditions photo diode(s), the MAX30112 offers the lowest power, Built-in Front And Back End Ambient Light Cancellation, highest performance heart rate detection solution for wrist Improving Rejection and Eliminating System applications. Complexity of Dealing with Ambient Light The MAX30112 operates on a 1.8V main supply voltage, Short Exposure Pulse Widths of 52s, 104s, with a separate 3.1V to 5.25V LED driver power supply. 206s, 417s for Efficient Uses of LED Light 2 The device supports a standard I C compatible interface, Multiple Sample Rate Options from 20sps to as well as shutdown modes through the software with 3.2ksps near-zero standby current, allowing the power rails to Ultra-Low-Power Operation for Mobile and Body- remain powered at all times. Wearable Device Dynamic Power Down Modes to 100sps for Applications Low-Power Consumption Wrist-Worn Wearable Devices Full AFE Power Consumption of Less Than 25A In-Ear Wearable Devices (typ) at 25sps Large 32 Sample FIFO to Support Batch Processing SpO Monitoring Devices 2 in the Microcontroller Fitness Wearable Devices Variety of System Monitors Mappable to Interrupts to Off-Load System Monitoring Functions From the Benefits and Features Microcontroller Reflective or Transmissive Heart Rate, Heart Rate Low Shutdown Current = 1.4A (typ) Variability, or SpO Monitoring 2 2 I C interface Transmit Section Supports a Single 1.8V Supply with Separate 3.1V to Two 8-bit LED Current DACs 5.25V LED Supply Four Current Ranges 50mA, 100mA, 150mA, 200mA Miniature 2.8mm x 2.0mm, 6x4, 0.4mm Ball Pitch Low Noise Current Sources for High Peak Transmit WLP Package to Receive Dynamic Range -40C to +85C Operating Temperature Range Low 160mV Dropout to Support Direct Drive From Rechargeable Li Battery High Output Impedance and High Supply Rejection to Support Unregulated Supply or Direct Drive From Boost Switcher Supply Ordering Information appears at end of data sheet. 19-8749 Rev 0 5/17MAX30112 Optimized Pulse-Oximeter and Heart Rate AFE for Wearable Health Simplified Block Diagram VDD ANA VDD DIG AMBIENT DIGITAL NOISE CANCELLATION CANCELLATION SDA PD IN 32 SAMPLE SCL 19-BIT CURRENT ADC FIFO PD GND INT VLED LED DRIVERS LED1 DRV REFERENCE LED2 DRV MAX30112 PGND GND ANA C2 P GND DIG Maxim Integrated 2 www.maximintegrated.com 2 I C INTERFACE