A leading manufacturer of clinical pressure monitoring equipment has recently gained FDA approval for the use of TT Electronics' GUS SOIC series high stability resistor networks. The equipment delivers real-time data on fluid pressure levels during surgical procedures, and is dependent on the stability and reliability of its analogue front end components. The use of any integrated component clearly results in space savings, but for resistor networks there is a major performance benefit too. The integrated approach allows tight definition of ratio tolerance together with TCR tracking, and, equally importantly, the matching of element temperature. This approach therefore offers many benefits over discrete resistor designs for circuits which depend more on the accuracy of resistance ratios rather than on the accuracy of values.
GUS SOIC networks offer ratio tolerance to 0.05% and TCR tracking to 5ppm/*C and are made with Tantalum Nitride on Silicon technology for outstanding stability and long term reliability. For full details see http://www.ttelectronicsresistors.com/datasheets/SOIC.pdf.