MAX32664GTGC+T

Overview

The MAX32664GTGC+T is a biometric sensor hub from Analog Devices, featuring an embedded Cortex-M4F processor operating at 96 MHz. It integrates world-class algorithms for wearable health monitoring and interfaces with host microcontrollers via a fast-mode slave I2C port. The device supports communication with optical sensors through either a master I2C or SPI interface depending on the version. It operates within a supply voltage range of 1.71 V to 3.63 V and includes a 32.768 kHz real-time clock. The component is housed in a 24-lead TQFN package.

Feature Summary

• Embedded firmware and algorithms for finger-based, wrist-based, and ear-based biometric measurements
• Supports direct connection to host accelerometers for motion artifact compensation
• Includes a bootloader for secure and authenticated firmware upgrades
• Provides both raw and processed sensor data to the host system

Applications

• Wearable fitness devices
• Hearables
• Wearable medical monitors
• Portable medical equipment
• Mobile devices

Procurement Notes

Verify the specific version suffix (A, B, C, or D) required for the target application, as each variant supports different sensor interfaces and algorithm sets. Confirm that the 24-TQFN package dimensions match the PCB land pattern specifications provided in the datasheet. Ensure power supply decoupling capacitors are placed close to the VDD and VCORE pins to maintain signal integrity.

Selection Notes

Select Version A or D for finger-based applications requiring pulse oximetry and heart rate via I2C sensors. Choose Version B for wrist-based heart rate monitoring using SPI sensors. Version C offers flexibility for wrist or ear applications with selectable I2C or SPI interfaces. Verify that the selected version aligns with the specific biometric algorithms needed, such as estimated blood pressure support available only in Version D.

Part Context

The MAX32664 belongs to the MAX32664 sensor hub family designed for ultra-low power biometric sensing. It is part of a broader ecosystem that includes compatible optical sensors like the MAX30101/30102 and MAX86140/86141. The device simplifies wearable design by offloading complex signal processing and algorithm execution from the main host processor.

Replacement Considerations

Public confirmed substitute part numbers are not available in the verified source material.