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ADS1198CZXGT Datasheet(PDF) 15 Page - Texas Instruments |
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ADS1198CZXGT Datasheet(HTML) 15 Page - Texas Instruments |
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15 / 73 page  ADS1194 ADS1196 ADS1198 www.ti.com SBAS471A – APRIL 2010 – REVISED SEPTEMBER 2010 OVERVIEW The ADS1194/6/8 are low-power, multichannel, simultaneously-sampling, 16-bit delta-sigma ( ΔΣ) analog-to-digital converters (ADCs) with integrated programmable gain amplifiers (PGAs). These devices integrate various ECG-specific functions that make them well-suited for scalable electrocardiogram (ECG), electroencephalography (EEG), and electromyography (EMG) applications. The devices can also be used in high-performance, multichannel data acquisition systems by powering down the ECG-specific circuitry. The ADS1194/6/8 have a highly programmable multiplexer that allows for temperature, supply, input short, and RLD measurements. Additionally, the multiplexer allows any of the input electrodes to be programmed as the patient reference drive. The PGA gain can be chosen from one of seven settings (1, 2, 3, 4, 6, 8, and 12). The ADCs in the device offer data rates from 125SPS to 8kSPS. Communication to the device is accomplished using an SPI-compatible interface. The device provides four GPIO pins for general use. Multiple devices can be synchronized using the START pin. The internal reference can be programmed to either 2.4V or 4V. The internal oscillator generates a 2.048MHz clock. The versatile right leg drive (RLD) block allows the user to choose the average of any combination of electrodes to generate the patient drive signal. Lead-off detection can be accomplished either by using a pull-up/pull-down resistor or a current source/sink. An internal ac lead-off detection feature is also available. The device supports both hardware pace detection and software pace detection. The Wilson center terminal (WCT) block can be used to generate the WCT point of the standard 12-lead ECG. Copyright © 2010, Texas Instruments Incorporated Submit Documentation Feedback 15 Product Folder Link(s): ADS1194 ADS1196 ADS1198 |
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