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Fully integrated analog front-end system design simplified five ECG electrodes

In Electronic Infomation Category: F | on April 15,2011

Electrocardiogram (ECG) system to measure and SN74HCT74N datasheet and record very detailed electrical activity of the human heart. To help designers to develop more compact and SN74HCT74N price and a new generation of portable ECG system, while providing effective analysis of high precision required for patient diagnosis of cardiac conditions, ADI Corporation recently announced the introduction of fully integrated system to support ECG analog front end (AFE) Series chip, the first product ADAS1000.

ADI Zhou Wensheng, director of Asia-Pacific industry market that debuted ADAS1000 AFE its biggest bright spot from a single package to achieve a complete ECG system. Not only achieve level performance monitoring and SN74HCT74N suppliers and diagnostic level, but also incorporates breathing pacemaker pulse detection and measurement of ECG and other important characteristics, and multi-lead ECG measurement of core and support functions, including lead testing and the right leg drive and other off . At the same time, ADAS1000 AFE also supports the U.S. Association for the Advancement of medical devices (AAMI) and the International Electrotechnical Commission (IEC) standard design.


Figure: ADAS1000 Functional Block Diagram

Up to 50 devices from the original down to just a single chip ADAS1000, then plus a few discrete components, greatly simplifying the five-electrode ECG system, but also the signal chain, bill of materials (BOM) costs are significantly reduced. In addition, the device also can be for noise performance, power or data rate to optimize the configuration, suitable for home, ambulance and clinical ECG system. The future introduction of new products in the series will also provide features and functionality optimized to support the traditional and new ECG systems.

ADAS1000 Other key features:

DC-coupled channel program with a simplified input switching, increased functionality, lower power consumption and unique advantages of post-processing; 5 ECG electrodes measure the work of the power consumption is 19mW. Can easily disable any unused channels or features, so that the lowest power consumption of a lead up to 11mW; low noise performance (0.05 Hz to 150 Hz range of 10 V peak to peak) to support terminal equipment regulatory standards; provide a different frame rate (2kHz, 16kHz, 128kHz), the greatest extent possible to simplify data collection tasks; to simplify the overall design, removal of many discrete devices, and reduce overall system size, lower power consumption, reduce development time.

ADAS1000 AFE with 10x10mm 64-pin LQFP package, and the supporting device includes the Blackfin DSP, single-chip USB isolator ADuM4160, four-channel digital isolators ADuM2401, 5kV DC / DC converters ADuM6000, transceiver ADF7023, linear regulator ADP150 and ADP151. ADI also offers ADAS1000 synchronous full-featured * The evaluation board, which includes the AFE, the power to simplify the development and manufacture of control and interface options, and can configure the AFE (from 5 to 12-lead ECG) for final deployment .

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