TI ADS1298 8路24位精度心电图(ECG)前端方案.pdf
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2019-09-05
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TI ADS1298 8 路 24 位精度心电图(ECG)前端方案
TI 公司的 ADS1298 是集成了心电图(ECG)前端的 8 路 24 位精度 delta-sigma (ΔΣ)
模/数转换器,具有同时取样和内置的可编增益放大器(PGA),基准电压和振荡器,
包含了医疗心电图(ECG)和脑电图(EEG)所有的功能.本文介绍了 ADS1298 主要
特性和优势,功能方框图,以及每路输入复接器方框图,单电源连接框图, 双电源连
接框图与心电图(ECG)总体方框图.
8-Channel, 24-Bit Analog-To-Digital Converter With Integrated ECG Front End
The ADS1294/6/8 are a family of 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 ADS1294/6/8
incorporate all of the features that are commonly required in medical
electrocardiogram (ECG) and electroencephalogram (EEG) applications.
ADS1298 主要特性和优势:
Simplifies design and saves board space, using up to 95 percent fewer components, by
integrating all common features required for ECG and EEG front ends, including the
following:
eight low-noise programmable gain amplifiers (PGAs).
eight high-resolution, simultaneous sampling analog-to-digital converters (ADCs).
integrated amplifier for right-leg drive.
integrated amplifiers for Wilson Central Terminal (WCT) and Goldberger Terminals
(GCT).
digital pace detection capability.
continuous lead-off detection.
onboard oscillator and reference for smaller footprint and low-power applications.
Power consumption of 1 mW/channel results in up to 95 percent less power use than
discrete implementations, increasing equipment portability and improving patient
mobility.
The ADS1298’s 4-uVpp (typical) input-referred noise is far superior to the limits set
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wuhuailin852021-05-26垃圾，骗积分
