MAX86141ENP+T

The Analog Devices MAX86141ENP+T is a highly integrated, ultra-low-power optical data acquisition system. It is optimized for optical sensing applications such as pulse oximetry and heart rate detection, making it ideal for wearable devices used in fitness, wellness, and medical applications.

This device includes three programmable LED drivers and on the receiver side, the MAX86141 offers two optical readout channels that can operate simultaneously. It features a low-noise analog front-end (AFE) with a 19-bit ADC, an industry-leading ambient light cancellation (ALC) circuit, and a picket fence detect and replace function. The MAX86141ENP+T operates on a 1.8V main supply and supports a 3.1V to 5.5V LED driver supply. Communication is handled via a standard SPI compatible interface.

The MAX86141ENP+T is available in a compact wafer-level package (WLP) measuring 2.048 x 1.848mm with a 0.4mm ball pitch. It operates within a temperature range of -40°C to +85°C. Its low power consumption, compact size, and excellent ambient light rejection capabilities make it suitable for various body locations including wrist, finger, and ear.

Key features include low dark current noise (< 50pA RMS), high dynamic range (> 89dB), and ultra-low-power operation with optical readout channels consuming less than 10μA typically at 25sps. The device also has a 128-word built-in FIFO for efficient data handling.