Integrated Octal and Quad a/d converters for medical imaging applications

The two octal and two quad channel converters are designed for medical imaging and communications applications where the combination of high channel density, low power and small size are designed to provide systems engineers with greater design flexibility and lower per channel cost for data conversion. The AD9257 14bit and AD9637 12bit octal a/d converters each integrate eight a/d converters into one package and are said to feature 40% lower power per channel than other discrete octal converters. ADI has also introduced the AD9253 14bit and AD9633 12bit quad a/d converters in 48 lead chip scale packages. According to ADI, these are more than 10% smaller than competing devices. All of the new converters support the higher channel densities of MRI systems, medical ultrasound and other high end imaging applications, such as industrial visual inspection systems and non destructive ultrasound. The AD9253 14bit and AD9633 12bit quad a/d converters are offered in a non magnetic package and can be used safely within the magnetic field of an MRI system. This allows the converters to be placed closer to the signal of interest, which can increase the quality of image resolution and image throughput while reducing the overall component count. Complementary components for these high speed converters include the AD8334 quad, ultralow noise variable gain amplifier for ultrasound applications. The new octal and quad a/d converters are also suited to MIMO based radios, 3G infrastructure equipment and other wireless communications applications. The ADL5202 variable gain wide bandwidth amplifier, AD8376 ultralow distortion IF dual VGA and ADA4937 ultralow distortion differential a/d converter driver are said to work well with these high speed converters in communications applications.