Impedance analysers for active/passive component development and production test
With the need for lower power consumption and compact equipment, efficient power converters have become all the more critical, as has knowing the real characteristics of low-loss components during the design phase. Agilent’s new impedance analysers have measurement accuracy to evaluate components from mohm to Mohm over the 20 Hz to 3 GHz frequency range, and to uncover the real characteristics of high-quality components. The E4990A offers 0.045% (typical) basic accuracy over a wide impedance range. The E4991B offers 0.65% basic accuracy and features accurate material measurement options that include temperature characteristics analysis from -55ºC to 150ºC and direct read function of permittivity and permeability.
The E4990A impedance analyser has a frequency range of 20 Hz to 10/20/30/50/120 MHz and replaces the Agilent 4294A. The E4991B impedance analyser has a frequency range of 1 MHz to 500 MHz or 1 GHz/3 GHz and replaces the E4991A. The analysers’ flexible frequency options allow engineers to select exactly what they need for their application today—with the least amount of investment—and easily upgrade later as the need arises.
Other key features of the analysers include a compact body that allows them to share desk space with other devices and tools, and a user-friendly interface. The 10.4-inch colour LCD with touch screen and multiple-setting functions enables users to evaluate many parameters under various conditions at the same time. A sophisticated, equivalent circuit-analysis function supports seven different multi-parameter models and allows users to simulate their own equivalent parameter values for components. The E4990A and E4991B impedance analysers support a variety of Agilent test accessories, making measurement of different applications simple and reliable. The company adds that broad frequency options and pricing support a range of test needs, and that these features expand their reach from passive component measurements to also include low-frequency material measurement and development of higher-frequency DC-DC converters.
Agilent; www.agilent.com/find/E4990 and www.agilent.com/find/E4991B
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