MAXREFDES73 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – Single-chip AC impedance measurement

System Board 6147
MAXREFDES73#: WEARABLE, GALVANIC SKIN
RESPONSE SYSTEM
Active: In Production.
Overview
The MAXREFDES73# reference design is a wearable, mobile galvanic skin response
(GSR) system featuring the MAX32600 wellness measurement microcontroller. This
battery-powered platform takes high-precision AC impedance measurements while
consuming minimal power. The MAX32600 microcontroller features the industry-standard
ARM® Cortex®-M3 32-bit RISC CPU that operates at up to 24MHz, while integrating
multiple high-performance analog peripherals. Analog features include a 16-bit ADC with
PGA, two 12-bit DACs, and a 16-channel multiplexer along with classic digital features
such as 256KB of flash memory, 32KB of SRAM, and a 2KB instruction cache. The
reference design provides a high-performance and flexible development platform, which is
a foundation for many fitness and medical measurement applications, especially galvanic
skin response measurement. The reference design arrives as a wrist-worn unit, powered
by a LIR2032 rechargeable coin battery. A mobile application program for devices for
Android™ provides the interface, and is free for download. The device communicates with
a device for Android though a Bluetooth® low-energy wireless interface. Test results,
hardware files, and firmware source code provide complete documentation for the design.
The complete wrist-worn unit is available for purchase.
Features
• High precision
• Integrated AFE
• Low power consumption
• Compact and low cost