TI adds on-chip respiration measurement to ECG/EEG AFE family for portable patient monitoring systems
The devices are power efficient, using up to 95 percent less power than discrete implementations. ADS1298R devices are available in eight-, six-, and four-channel versions.
The ADS1298R provides respiration impedance at a resolution of 20 milliohms, enabling the accurate monitoring and correlation of patient respiration to ECG abnormalities.
The device integrates 44 discrete components, reducing board space up to 97 percent. In addition to a fully-integrated respiration impedance function with user-selectable phase adjustment, ADS1298R devices include eight analog-to-digital converters (ADCs), eight programmable gain amplifiers (PGAs), eight active filters and pace detect interface, lead off detection, voltage reference, right leg drive (RLD) and more.
The ADS1298R uses 750 uW/channel which is up to 95 percent lower power consumption than discrete implementations, with multiple power-down configurations to increase the battery life of portable patient monitoring devices.
Typical 4-uVpp input-referred noise surpasses the International Electrotechnical Commission’s IEC60601-2-27/51 standard, enabling extremely high levels of accuracy in portable and high-channel-density ECG equipment.
Complementing the leading power consumption of the ADS1298R is the TMS320C5515 ultra-low-power DSP, which uses less than 0.15 mW/MHz to further extend battery life.
An evaluation platform is available for the ADS1298R devices. The ADS1298R Performance Demonstration Kit (ADS1298RECGFE-PDK) includes easy-to-use evaluation software; built-in analysis tools, including oscilloscope, FFT and histogram displays; flexible input configurations; optional external reference circuits; and the ability to export data in simple test files for post processing.
An IBIS model to verify board signal integrity requirements is also available.
Availability and Pricing
ADS1298R devices are all available today in an 8-mm x 8-mm BGA package. 1,000-unit pricing is as follows: eight-channel ADS1298R for $25.95; six-channel ADS1296R for $19.95 and four-channel ADS1294R for $13.95.
For more information visit www.ti.com/ads1298r-pr
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