Maxim MAX32600可穿戴皮肤电反应(GSR)仪参考设计
人的情绪变化总是伴随一系列生理反应如呼吸,血压,脉搏,血管容积和腺体分泌等.和汗腺分泌有关的皮肤电反应常用作情绪变化的一种间接生理指标，是指肌体受刺激时皮肤电传导的变化,一般用电阻值及其对数或电导及其平方根表示.皮肤电（或简称为皮电反应，galvanic skin response,简写为GSR）是反映情绪变化的生理指标。许多心理现象与皮肤电平有密切关系，情绪反应会引起皮肤电平的急剧变化.因此,皮肤电可以作为情绪的生理指标.本文介绍了采用MAX32600的可穿戴皮肤电反应(GSR)仪MAXREFDES73#参考设计,包括MAXREFDES73#系统框图,AC阻抗测量框图,电路图,材料清单和PCB设计图.
The MAX32600 microcontroller is based on the industrystandardARM? Cortex?-M3 32-bit RISC CPU operatingat up to 24MHz. It includes 256KB of flash memory, 32KBof SRAM, a 2KB instruction cache, and integrated highperformanceanalog peripherals.
The MAX32600 comes in 192-ball, 12mm x 12mmCTBGA and 120-ball, 7mm x 7mm CTBGAand 108-ballWLP packages.
MAX32600优势和特性:
● Integrated AFE Enables Precision WellnessMeasurements with Minimal Discretes
• 16-Bit ADC with Input Mux and PGA
Up to 500ksps Conversion Rate
PGA with Gain of 1, 2, 4, and 8 and Bypass Mode
Differential 8:1 or Single-Ended 16:1 Input Mux
Internal Mux Inputs for Measuring VDDA3
• Internal or External Voltage ReferenceProgrammable Buffers for ADC and DACs
• Two 12-Bit DACs and Two 8-Bit DACs
• Four Operational Amplifiers..
