TI ADS1x9x心电图模拟前端(ECG FE)解决方案

TI公司的ADS1x9x系列包括ADS1291, ADS1292和ADS1292R器件,是低功耗两路24位心电图模拟前端(ECG FE),集成了可同时取样的24位delta-sigma (ΔΣ) ADC和可编增益放大器(PGA),基准电压源和板上振荡器.每路的功耗仅为335uW,输入参考噪音8 μVPP (150-Hz BW, G = 6),输入偏置电流200pA,数据速率从125SPS到8kSPS,CMMR为-105dB,可编程增益1, 2, 3, 4, 6, 8或12,支持单电源和双极电源,主要用在便携式低功耗医用心电图仪,运动和健美等领域.本文介绍了ADS1x9x主要特性, 功能方框图, 单电源和双极电源工作电路图, ADS1x9xECG-FE演示板主要特性,方框图,电路图,材料清单和PCB元件布局图.

Low-Power, 2-Channel, 24-Bit Analog Front-End for Biopotential Measurements

The ADS1291, ADS1292, and ADS1292R are multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator.

The ADS1291, ADS1292, and ADS1292R incorporate all features commonly required in portable, low-power medical electrocardiogram (ECG), sports, and fitness applications. ADS1292R enable the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.
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