MAX32674CGWG+

Overview

The MAX32674CGWG+ is an ultra-low-power biometric algorithm and sensor hub designed for wearable fitness, medical, and hearable applications. It operates on a single supply voltage ranging from 1.71V to 3.63V with a system clock frequency of 100MHz. The device features a Fast-mode I2C slave interface operating at up to 400kHz for host communication and supports master mode SPI interfaces for sensor connectivity. It includes an internal real-time clock oscillator requiring a 32.768kHz crystal. The component is housed in a 24-pin Wafer Level Package (WLP) measuring 2.50mm x 1.75mm with a 0.4mm pitch, suitable for compact form factors.

Feature Summary

• Supports both Algorithm Hub and Sensor Hub configurations to optimize system power consumption and host integration effort.
• Facilitates secure, authenticated software upgrades via an internal bootloader accessible through the I2C interface.
• Provides automatic exposure control to optimize analog front-end LED currents, sampling rates, and power consumption.
• Includes embedded biometric algorithms for pulse heart rate, blood oxygen saturation, and activity tracking.

Applications

• Wearable Fitness Devices
• Hearables
• Wearable Medical Equipment
• Portable Medical Instruments
• Mobile Devices

Procurement Notes

Verify the specific ordering suffix 'C' corresponds to the required algorithm encryption keying version for your application environment. Confirm package availability and lead times directly with Analog Devices or authorized distributors, as production status may vary. Ensure compliance with RoHS requirements specified in the datasheet before finalizing procurement orders.

Selection Notes

Select the Algorithm Hub configuration if simultaneous ECG and PPG operation with time-synchronized accelerometer data is required. Choose the Sensor Hub configuration for standalone modes where dynamic sensor management is offloaded to reduce host interaction and total system power. Verify that the host microcontroller can support the necessary I2C bootloader protocol for initial algorithm flashing.

Part Context

The MAX32674C belongs to the MAX3267x family of biometric hubs developed by Analog Devices/Maxim Integrated. This series targets the growing market for wrist-based health monitoring solutions. The device complements Analog Devices' optical sensor portfolio, such as the MAX86176, by handling complex signal processing and sensor synchronization tasks efficiently.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult Analog Devices technical support for potential alternatives or next-generation replacements within the MAX3267x family or related biometric hub product lines.