TI ADS1298R心电图前端解决方案

TI公司的ADS1298R是心电图(ECG)前端解决方案,集成了8路同时取样的24位Delta-Sigma模数转换器(ADC)和内置的可编增益放大器(PGA),基准电压以及振荡器,具有心电图(ECG)和脑电图(EEG)所有的功能,每路的低功耗为0.75mW,输入偏置电流200pA,数据速率250SPS到32kSPS,CMRR为-115dB,输入参考噪音4μVPP (150Hz BW, G = 6),可编增益1, 2, 3, 4, 6, 8,或12,单电源2.7V-5.25V或双电源1.65V-3.6V工作,主要用在医疗仪器(ECG,EEG和EMG),病人监视,Holter等以及高精度多路信号同时取样.本文介绍了ADS1298R主要特性,功能方框图, 单电源和双电源工作电路,以及ADS1298R ECG前端支持特性,方框图,电路图和材料清单(BOM).

The ADS1298R ECG FE is a reference design for the ADS1298R, a simultaneous sampling, 24-bit, delta-sigma (Δ Σ) analog-to-digital converter (ADC) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator. The ADS1298R incorporates all of the features that are commonly required in medical electrocardiogram (ECG) and electroencephalogram (EEG) applications. The ADS1298R ECG FE can be used with a variety of patient simulators and allows the user to take advantage of the flexible input multiplexer which can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. The ADS1298R also includes integrated Respiration Impedance measurement capability.

ADS1298R主要特性:

• Eight Low-Noise PGAs and Eight..

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