Maxim Integrated
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Maxim Reference Designs with MAX32664
Maxim provides multiple reference designs to its customers to enable quick and effective adoption of
MAX32664 and fastest time to market. For detailed schematics, refer to the user guide of each reference
design.
MAXREFDES220#
The MAXREFDES220# reference design provides everything you need to quickly prototype your product
to measure finger-based heart rate and blood oxygen saturation level (SpO
2
).
SENSOR HUB DRIVER FIRMWARE
DIGITAL SIGNAL PROCESSING
ALGORITHMS FOR
HEART RATE AND SPO2
MAX30101
PULSE OXIMETER
AND HEART-RATE
SENSOR
KX122-1037
3-AXIS
ACCELEROMETER
MAXREFDES220
FINGER HEART RATE AND PULSE OXIMETER SMART SENSOR
MAX32630FTHR
(HOST)
SENSOR
PLATFORM
COMMANDS
SECURE FIRMWARE BOOTLOADER
MAX32664(A)
BIOMETRIC SENSOR HUB
HEART RATE DATA
SPO2 DATA
ENCRYPTED .MSBL
APPLICATION
ALGORITHM/FIRMWARE
DOWNLOAD
SLAVE
I
2
C
SENSOR I
2
C
USB
PC
GUI
Figure 1. MAX32664 block diagram.
The MAXREFDES220# solution, which includes the MAX30101 and the MAX32664, provides an integrated
hardware and software solution for finger-based applications. The MAX32664 is used as a sensor hub to
collect data from the MAX30101 analog front end (AFE). The reference design also includes a tri-axis
accelerometer (KX-122) to compensate for motion artifacts. (Accelerometer support in the
MAXREFDES220# is optional.)
The MAX32630FTHR is used as a sample host is included in MAXREFDES220# reference design.