Texas Instruments Launches Analog Front Ends for Ultrasound Systems

(Product News, 1 Apr 2008)

Texas Instruments Inc. (TI) has developed a family of fully integrated analog front ends (AFEs) for portable to high-end ultrasound diagnostic equipment. TI's AFE58xx family will allow the design of innovative ultrasound systems with superior image quality and reduced power consumption. The first device, the AFE5805, addresses the specific needs of the portable ultrasound market with nearly 50 percent space savings, 20 percent lower power consumption and 40 percent less noise than existing integrated solutions.

Aging populations, rising healthcare costs and increased demand in emerging economies have created a rapidly growing need for innovative medical solutions such as portable and affordable ultrasound equipment to be used in doctors' offices, ambulances, mobile triage situations and remote regions. Frost & Sullivan forecasts the market for portable or hand-carried ultrasound systems to grow with a 19.2 percent compound annual growth rate and reach $330 million by 2010.

The AFE5805 is a complete analog signal chain solution specifically designed for portable ultrasound systems, which require low power and small size while maintaining the highest resolution possible. By reducing component count, the AFE5805 decreases power consumption by up to 20 percent with 122mW per channel power efficiency and offers 40 percent less noise than its closest competitor. With the low noise feature of 0.85nV/rtHz at 2MHz, the AFE5805 achieves a performance suitable not only for portable equipment, but also for high channel density mid-range ultrasound systems.

The device integrates eight channels of a low-noise amplifier (LNA), voltage controlled attenuator, programmable gain amplifier, low-pass filter, and 12-bit, 50 MSPS analog-to-digital converter (ADC) with LVDS data outputs. The 15x9mm AFE5805 is said to be the smallest analog front end currently available in the market.

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