UTAS Medical Equipment Ensures High Quality Patient Care with Help from Analog Devices

New UM 300® portable patient monitor leverages Blackfin processors and other advanced ADI components for superior performance, low power consumption, and space savings

Few technology developers face the intense pressure shouldered by today's medical equipment makers. When a single lapse in equipment performance or reliability can literally mean the difference between life and death, there is little margin for error. It should come as no surprise then that medical equipment developers employ some of the most stringent standards in the digital electronics industry when selecting the components that will underpin their systems – only the best components make the cut.

UTAS, a provider of medical devices for patient monitoring and diagnostics, offers an extensive portfolio of electrocardiographs, patient monitors, pulse oximeters and other products for use in medical facilities and in the field. Medical professionals depend on UTAS' equipment to get a clear view of patient data, which enables them to make timely, more informed patient care decisions. Staking the reputation of the company on each system it ships, UTAS depends on Analog Devices to ensure high-performance signal processing operations and robust functionality across its full line of products – highlighted by UTAS'most recent product introduction, the UM 300 portable patient monitor.

Vital Technology for Measuring Vital Signs
UTAS' systems are distinguished by their measurement precision, reliability and affordability, and feature compact form factors and support for battery operations to ensure ease of portability. Utilized in hospitals, clinics, and emergency vehicles in more than twenty-five countries around the world, UTAS' systems are designed for use across a broad range of patient care applications, including surgery, cardiology, intensive care, bedside care, and patient transport.

The new UM 300 multi-parameter patient monitor exemplifies UTAS' innovative application of Analog Devices'technology, incorporating ADI Blackfin® processors for digital signal processing (DSP) and other advanced ADI components to realize a seamlessly connected signal chain in a cost effective, compact system package. ADI's rich expertise in the healthcare market and state-of-the-art signal processing technology enabled UTAS to architect a unified system design for the UM 300 that delivers a host of powerful signal processing, networking and analysis capabilities.

End-to-End Signal Processing Platform
The UM 300 patient monitor leverages a dual-core Blackfin BF561 for centralized digital signal processing – real-time digital filtering, preprocessing and finish processing – as well as to control the system's measurement virtualization capabilities and its video interface, which enables simultaneous viewing of up to eight real-time waveforms via a high-resolution color display. Blackfin BF561 is a symmetric multiprocessing configuration of two Blackfin cores, each of which is capable of operating at up to 600 MHz/1200 MMACS with 2.6 Mb of on-chip SRAM memory. Extremely high bandwidth is provided by the 32-bit external port and dual 16-channel DMA controllers. With two Blackfin cores integrated within the BF561 architecture, UTAS was afforded significant space savings which further helped to minimize design complexity and realize the UM 300's compact form factor.

The Blackfin BF561 features on-chip, application-tuned peripherals that provide direct connectivity to an ADI AD7190 sigma-delta analog-to-digital converter (ADC) and AD7689 PulSARˊ ADC within the UM 300. The system also utilizes ADI AD8605 single-supply operational amplifiers, AD8220 junction field effect transistor (JFET) input instrument amplifiers, an ADP3335 precision voltage regulator, and an s/product.html" target="pop">ADuM2401 iCoupler® quad-channel digital isolator, comprising a seamlessly interconnected, high-performance component platform.

Blackfin to the Core
UTAS' success with Blackfin extends to other UTAS systems, including the UCARD 100 electrocardiograph and USP 100 syringe pump, both of which utilize Blackfin BF533 processors to power high-performance biomedical signal processing, and both of which are interoperable with the UM 300.

The Blackfin BF533 processor architecture, which includes multifunction serial ports (SPORTs), UART, a SPI-compatible port, and a programmable parallel port interface (PPI), provided UTAS'design team with seamless peripheral connectivity to accommodate a wide range of configuration options.

Both the Blackfin BF561 and BF533 are equipped with a range of innovative architectural features that reduce their power consumption at both the processor level and the system level, including a self contained dynamic power management scheme whereby the operating frequency and voltage can be independently manipulated to meet the performance requirements of the algorithm currently being executed. With power consumption starting as low as 0.15 mW/MMAC at 0.8 V, Blackfin's low-power features enabled UTAS'system designers to maximize the battery life for all of their Blackfin-based products, which is a critical factor for enabling portable operation.

ADI at the Heart of Innovation
Analog Devices' Visualdsp++ easy-to-install, easy-to-use software development and debugging environment for the ADI processor family further enabled UTAS to streamline the product development process. VisualDSP++ is a member of ADI's CROSSCORE family of software and hardware tools, which also features the EZ-KIT Lite evaluation kit, all of which helps developers shorten design cycles and speed time to market.

With Analog Devices' technology at the heart of UTAS'patient monitoring and diagnostics systems, users are assured unmatched signal processing performance for precise measurement of patients'vital signs. UTAS'new UM 300 patient monitor is just the latest example of how ADI is delivering high performance, feature-rich signal processing technology to enable advanced medical systems designs.

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