MAX32664GWEB+T

Overview

The MAX32664GWEB+T is a biometric sensor hub from the MAX32664 family, designed for wearable health applications. It operates on a single 1.8V supply with a range of 1.71V to 3.63V and supports a system clock frequency up to 96MHz. The device features a 32.768kHz real-time clock (RTC) and utilizes a 16-bump WLP package measuring 1.6mm x 1.6mm. As Version B, it provides an SPI master interface for communicating with sensors like the MAX86140/86141. It includes embedded firmware and algorithms for wrist-based pulse heart rate monitoring.

Feature Summary

• Embedded firmware and algorithms optimized for wrist-based biometric sensing
• SPI master interface dedicated to communication with optical sensors
• I2C slave interface for data access by host microcontrollers
• Integrated bootloader for secure and authenticated firmware updates

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and RoHS compliance status. Ensure that the selected variant matches the required sensor interface protocol for your design. Cross-reference the part number with official distributor catalogs to confirm availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when designing wrist-worn biometric devices requiring integrated signal processing. Verify compatibility with the target optical sensor, such as the MAX86140 or MAX86141, which utilize the SPI interface supported by Version B. Consider the 1.6mm x 1.6mm form factor if space constraints are critical for the application enclosure.

Part Context

This part belongs to the MAX32664 series of ultra-low power biometric sensor hubs. The series differentiates versions based on supported algorithms and sensor interfaces. Version A and D support finger-based applications with I2C, while Version B targets wrist-based monitoring using SPI. This specific model integrates the necessary hardware and firmware to offload processing from the main host MCU.

Replacement Considerations

Other members of the MAX32664 family may serve as alternatives depending on the required algorithm version and sensor interface. For instance, MAX32664GWEA+T offers Version A with I2C for finger-based applications. Ensure any substitute maintains the same package footprint and voltage requirements.