Analog front-ends deliver sharper images for ultrasound equipment

Dallas, Tex. — Texas Instruments (TI) has introduced the AFE58xx family of fully integrated analog front-ends (AFEs) for portable to high-end ultrasound diagnostic equipment. The first device in the family, the AFE5805, targets the portable ultrasound market with nearly 50 percent space savings, 20 percent lower power consumption and 40 percent less noise than existing integrated solutions, said TI.

Delivering a complete analog signal chain solution, the AFE5805 decreases power consumption by up to 20 percent with 122 mW per channel power efficiency and offers 40 percent less noise than its closest competitor. With the low noise feature of 0.85 nV/rtHz at 2 MHz, the AFE5805 achieves a performance suitable for both portable equipment and 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 a 12-bit, 50 MSPS analog-to-digital converter (ADC) with LVDS data outputs. With a 15 mm x 9-mm package, the AFE5805 is said to be the smallest analog front-end currently available in the market, about half the size of existing solutions. The low-input voltage noise level of the on-chip LNA is key to the quality of the complete input signal path and determines the entire system performance, including the high resolution, said TI.

To support the product family, TI also provides evaluation modules (EVMs), data sheet downloads and free samples. The company also offers a full portfolio of integrated circuits for ultrasound systems including high performance DSPs, DaVinci digital media processors, OMAP application processors, high-speed data converters and amplifiers, power management, clocks and interface devices.

Pricing: The AFE5805, in a135-pin BGA package, is available at a suggested retail price of $75 each in quantities of 100.
Availability: Samples and EVMs are available now, with volume production scheduled for June 2008.

Product information: AFE5805 and Medical Applications Guide

Texas Instruments Inc. , 1-800-477-8924,

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