Description

The MAX86140/MAX86141 are ultra-low-power, com- pletely integrated, optical data acquisition systems. On the transmitter side, the MAX86140/MAX86141 have three programmable high-current LED drivers that can be configured to drive up to six LEDs using an external 3x2:1 mux. With two MAX86140/MAX86141 devices working in master-slave mode, the LED drivers can drive up to twelve LEDs using an external 3x2:1 mux. On the receiver side, MAX86140 consists of a single optical readout channel, while the MAX86141 has two optical readout channels that can operate simultaneously. The devices have low- noise signal conditioning analog front-end (AFE) including 19-bit ADC, an industry-lead ambient light cancellation (ALC) circuit, and a picket fence detect and replace func- tion. Due to the low power consumption, compact size, ease of use, and industry-lead ambient light rejection capability of MAX86140/MAX86141, the devices are ideal for a wide variety of optical-sensing applications, such as pulse oximetry and heart rate detection.The MAX86140/MAX86141 operate on a 1.8V main supply voltage and a 3.1V to 5.5V LED driver supply voltage. Both devices support a standard SPI compatible interface and fully autonomous operation. Each device has a large 128-word built-in FIFO. The MAX86140/MAX86141 is available in compact wafer-level package (WLP) (2.048 x 1.848mm) with 0.4mm ball pitch.Introducing the MAX-HEALTH-BAND Heart Rate and Activity Monitor Wristband Health Monitoring Demo with MAX86141 Design Solution: REALLY Smart Wearables Customize Their Power Supply › Design Solution: Choose the Proper PMIC to Boost Your Optical Sensor SNR › Design Solution: Take a Weight Off Your Chest with a Wrist-Worn ECG Monitor › Design Solution: Designing for Wearable Health and Fitness? Think Inside the Box › Design Solution: Train Your Fitness Monitor to Deal with Any Lighting Conditions ›ApplicationsMuscle Oxygen Saturation (SmO2 and StO2)Optical Heart RateOptimized for Wrist, Finger, Ear, and Other LocationsOptimized Performance for High Quality PPG Signal to DetectOxygen Saturation (SpO2)Wearable Devices for Fitness, Wellness, and Medical Applications