Cost-effective but high performance signal conversion is of capital importance in the world of medical imaging systems. The Burr-Brown Corporation, an Arizona based manufacturer of data conversion and mixed signal integrated circuits, has just issued the ADS807 analog-to-digital converter. This 12-bit device with a sampling rate of 53 Mhz operates at surprisingly low power but offers a superior image quality, because of its high signal-to-noise ratio.
In contrast with the previous generation of 10-bit analog-to-digital converters, the ADS807 displays an increased degree of sensitivity because of the 12-bit resolution. The current ultrasound systems only require a signal sampling rate of 40 Mhz, so the ADS807convertor easily surpasses the standard rate. In addition, the low powered activity ideally fits the high channel count medical imaging systems, ranging from 128 to 1024.
Market researchers expect the ultrasound equipment business to extend with a percentage of 5% by the year 2000. Nevertheless, if we consider the increase of channel counts from 64 over 128 to 1024 for each single ultrasound system, realizing that every channel needs one analog-to-digital convertor, the future of ADS807 looks bright with a probable annual growth margin of 25%.
The innovative convertor incorporates several strong functions, including 82 db spurious free dynamic range, 335 mW power dissipation, internal and external reference option, and a flexible input range from 2Vp-p to 3Vp-p. The supplementary output enable pin constitutes a useful element for the testing on a PC board.
Next to ultrasound systems, the ADS807 can equally be applied in wireless as well as basestations communications and in video digitizing activities. In these fields, there is a great demand for relatively inexpensive analog-to-digital conversion, that still provides high quality. In any case, the ADS807 seems to come up to these expectations.