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MCU provides complete signal chain for medical handhelds

Posted: 15 Nov 2007 ?? ?Print Version ?Bookmark and Share

Keywords:medical handhelds? signal chain? MCU?

Texas Instruments Inc. has announced a SoC MCU that provides a complete signal chain for handheld medical applications. The new MSP430FG4270 MCU integrates a comprehensive range of functions needed to design low-cost portable medical diagnostic equipment. The generous on-chip memory and a full suite of integrated analog peripherals keep component costs and system space to a minimum in portable applications such as personal blood pressure monitors, spirometers, pulsoximeters and heart rate monitors.

Medical diagnostics are changing rapidly, aided by a new generation of equipment and handheld devices that can be carried to the patient's bedside. Processing solutions for such equipment must not only offer high performance and low power consumption, but also minimize board space and component counts through SoC integration. In order to measure, monitor and display analog physiological input signals such as temperature, blood pressure and other vital signs, the ultralow-power MSP430FG4270 MCU integrates the complete analog and digital signal chain. This includes signal conditioning techniques such as amplification, filtering and digital conversion.

Optimized performance, battery life
The MSP430FG4270's 16bit RISC architecture is designed for optimized performance and extended battery life. Five low-power modes, with a standby power consumption of 1.1?A, conserve power, while a wake-up from standby to active mode of less than 6?s provides excellent response when the equipment is needed. On-chip functions that save external components include a high-performance 16bit sigma-delta ADC with internal reference and five differential analog inputs, 12bit DAC, two configurable operational amplifiers, 16bit timer, 16bit registers, 32 I/O pins, zero-power brown-out reset and an LCD driver with contrast control for up to 56 segments.

The MCU's power savings and SoC integration can also benefit other types of applications, including analog and digital sensor systems, portable medical devices, digital motor control, remote controls, thermostats, digital timers and handheld meters.

To speed time-to-market, MSP430 development kits include everything required to complete an entire project, including the IAR Embedded WorkbenchTM and Code Composer Studio EssentialsTM Integrated Development Environments, a USB debugging and programming interface and an MSP430-based target board.

The new MSP430FG4270 MCU is available in volume from TI and TI authorized distributors. Customers can select a 48-pin SSOP or 48-pin QFN package. Suggested resale pricing for the MSP430FG4270 is $3.78 per unit in quantities of 10,000.




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