ADI eight-channel ultrasonic receiver optimized imaging quality and power performance

A new generation of high performance and portable ultrasound system performance is often required in image quality and diagnostic capacity and balance between power consumption.

Analog devices designed to meet the needs of recently introduced two new products, which has the industry's lowest AD9272 Terminal noise, suitable for the need to obtain excellent image quality of high-and mid-range carts ultrasonic devices; while AD9273 in similar products, can provide the highest power efficiency, meet the demand for portable ultrasound systems.

ADI greater China, industrial and medical senior business manager Zhou Wen sheng said, in this series of products, ADI has launched April 2007 applied to medical imaging industry in AD9271 product —, it is the first fully integrated on a single chip in the eight-channel ultrasonic receiver devices, and has been widely used in ultrasound device.

AD927x products use integrates eight-channel single-chip replaces the previous discrete solutions, each channel contains a low noise amplifier (LNA), a variable gain amplifier (VGA), an anti-aliasing filter (AAF) and a 12-bit analog-digital converter (ADC).

Zhou Wen sheng said, in the real environment, have the 5MHz AD9272 industry's lowest noise of Terminal, equivalent to the input side noise only 0.75 nV/rtHz above, its input dynamic range than similar devices by 6 dB/rtHz.

For portable ultrasound device for AD9273 has industry-leading low power consumption, MSPS in 12-bit, 40, per channel power consumption less than 100 MW, helps to extend battery life of ultrasound equipment.

AD9272 and AD9273 with up to 42 DB variable gain range, optional anti-aliasing filter, and ADI other product series pin-compatible.

AD9272 built-in ADC conversion rate as high as 80 MSPS; built-in ADC conversion AD9273 at up to 50 MSPS. AD9271 variable gain range is 30dB, built-in ADC conversion rate of up to 50 MSPS.

In addition, programmable gain for LNA input dynamic range optimization, programmable VGA, can output dynamic range optimization.

Programmable filter cut-off frequency and sample rate to match the probe bandwidth.

Zhou Wen sheng said AD927x series devices for medical equipment design engineer provides different imaging mode, expand the power and flexibility of the performance.

AD9272 and AD9273 have serial port interface (SPI) to optimize the design, by changing the SPI registers, design engineers can optimize ultrasound signal-processing framework to achieve the best noise performance or the longest battery life. And allows designers to any given imaging mode, probe or power demand further planning custom noise and power performance. At the same time provides easy-to-use software tools to simplify the configuration.

It is understood that AD9272 and AD9273 is designed for and designed for interface AD8339, AD8339 is a belt-shifter's four-channel programmable I/Q demodulator, is very suitable for CW Doppler ultrasound system.

AD9272 and AD9273 can and analog devices the following products: low noise, high speed amplifier AD8021; AD7980 16-bit, 1 MSPS PulSAR ADC; ADR433 5.0 V ultra low noise voltage references. These products represent today's medical imaging and ultrasonic applications the most extensive product line.