The MAX86170A is an ultra-low-power optical data-acquisition system with both transmit and receive channels. On the transmitter side, the MAX86170A has six LED driver output pins, programmable from three high-current, 8-bit LED drivers. On the receiver side, MAX86170A has two low-noise charge integrating front-ends that each includes independent 20-bit ADC and best-in-class ambient light cancellation (ALC) circuits, producing the highest performing integrated optical data acquisition system on the market today.Due to its low power consumption, compact size, ease and flexibility of use, the MAX86170A is ideal for a wide variety of optical sensing applications such as pulseoximetry and heart-rate detection.The MAX86170A operates on a 1.8V main supply voltage and a 3.1V to 5.5V LED driver supply voltage. The device supports both I2C- and SPI-compatible interfaces in a fully autonomous way. The device has a large 256-word builtin FIFO.The MAX86170A is available in a compact WLP package 2.78mm x 1.71mm with 6 x 4, 0.4mm ball pitch.ApplicationsWearable Devices for Fitness, Wellness, and MedicalClinical AccuracySuitable for Wrist, Finger, Ear, and Other LocationsBody HydrationHeart-Rate VariabilityMaximum Oxygen Consumption (VO2 max)Muscle and Tissue Oxygen Saturation (SmO2 and StO2)Optical Heart RateOptimized Performance to Detect:Oxygen Saturation (SpO2)