MAX86180ENB+T

Analog Front End (AFE) Overview

The MAX86180ENB+T is a high SNR dual-channel analog front-end (AFE) designed for multi-wavelength optical spectroscopy. It integrates two high-current 8-bit programmable LED drivers capable of driving up to 32 LEDs and two low-noise charge integrating front-ends with independent 20-bit ADCs. The device features best-in-class ambient light cancellation circuits and operates on 3.3V analog, 3.5V–5.5V LED driver, and 1.8V digital supplies. It includes two integrated LDOs, supports I2C/SPI interfaces, contains a 512-word FIFO, and functions within a -40°C to +85°C range in a 7x5mm WLP package.

Analog Front End (AFE) Feature Summary

• Dual-channel optical data acquisition system with 20-bit ADCs and integrated ambient light cancellation
• Programmable LED drivers supporting up to 32 individual LEDs
• Ultra-low-power operation optimized for wearable devices
• Supports single 3.5V VLED supply via integrated LDOs

Analog Front End (AFE) Applications

• Wearable fitness and wellness devices
• Medical applications including pulse oximetry and heart rate detection
• Optical spectroscopy systems
• Body hydration monitoring

Analog Front End (AFE) Procurement Notes

Verify the component against the official Analog Devices datasheet Rev. 2 to confirm pinout compatibility and electrical specifications. Ensure that the 3.3V analog and 1.8V digital supply requirements are met by the target power design. Confirm that the 7 x 5mm WLP package dimensions fit the intended PCB layout constraints.

Analog Front End (AFE) Selection Notes

Select this component for applications requiring high SNR optical sensing in compact form factors. It is suitable for designs needing simultaneous multi-wavelength measurements. Verify that the host processor supports the required I2C or SPI communication protocols. Ensure the system can accommodate the specific voltage rails provided by the internal LDOs.

Analog Front End (AFE) Part Context

The MAX86180 is part of Maxim Integrated's portfolio of optical sensing solutions, now under Analog Devices. It serves as an advanced AFE for biometric monitoring, offering superior performance compared to previous generations by integrating high-resolution ADCs and extensive LED drive capabilities into a small wafer-level package.

Analog Front End (AFE) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for potential alternatives if this specific model is unavailable.