Maxim MAX30001超低功耗生物电势和阻抗AFE解决方案

Maxim公司的MAX30001是超低功耗单路生物电势(ECG,R-R,节奏检测)和生物阻抗(BioZ)模拟前端(AFE).生物电势通路提供心电图(ECG)波形,心率和起搏器边沿检测,而生物阻抗通路则能够测量呼吸.两个通路具有ESD保护,EMI滤波,内部电极偏压,DC导联脱落检测,超低功耗,待机模式导联连接检测和内置自测校准电压以及高输入阻抗,低噪音,高CMRR,可编增益,各种低通和高通滤波器选择和高分辨率模数转换器.主要用在心律不齐检测的单导联事件监测器,住院/门诊监测的单引线无线贴片,健身胸带心率监视器,呼吸和水化监视器,基于阻抗的心率检测,生物认证和按需ECG应用.本文介绍了MAX30001主要优势和特性,功能框图,应用电路,以及评估板MAX30001 EVS主要特性,电路图,材料清单和PCB设计图.
The MAX30001 is a complete, biopotential and bioimpedance (BioZ), analog front-end (AFE) solution for wearable applications. It offers high performance for clinical and fitness applications, with ultra-low power for long battery life. The MAX30001 is a single biopotential channel providing electrocardiogram (ECG) waveforms, heart rate and pacemaker edge detection, and a single bioimpedance channel capable of measuring respiration.
The biopotential and bioimpedance channels have ESD protection, EMI filtering, internal lead biasing, DC leads-off detection, ultra-low-power, leads-on detection during standby mode, and extensive calibration voltages for built-in self-test. Soft power-up sequencing ensures no large transients are injected into the electrodes. Both channels also have high input impedance, low noise, high CMRR, programmable gain, various low-pass and high-pass filter options, and a high resolution analog-to-digital converter. The biopotential channel is DC coupled, can handle large electrode voltage offsets, and has a fast recovery mode to quickly recover from overdrive conditions, such as defibrillation and electro-surgery. The bioimpedance channel includes integrated programmable current drive, works with common electrodes, and has the flexibility for 2 or 4 electrode measurements. It also has AC lead off detection.The MAX30001 is available in a...