On June 21st Agilent released two new 2-quadrant SMU modules, the N6781A and N6782A. The N6781A is optimized for battery drain analysis and the N6782A is optimized for functional test. These modules go into Agilent’s popular N6705A/B DC Power Analyzer and N6700 Modular Power System. These SMU modules provide current measurement capability down to 10s of nano amps, four different current measurement ranges, fast transient response, I and V arbitrary waveform capability, and two 200 KSa/s 18 bit measurement digitizers for capturing voltage and current in parallel. Now those are awesome features right there, but what really makes these SMUs special is a patent Agilent only technology that gives them the ability to seamlessly transition through current measurement ranges without any discontinuities or glitches in the output power being delivered to the DUT. This innovative feature is intended for engineers testing devices where low power optimization is critical for delivering maximum battery life such as cell phones, handheld radios, or portable medical devices.
The seamless measurement ranging ability means the N6781A and the N6782A can capture dynamic current ranging from milli or micro amps to amps with high accuracy and 18 bits of resolution over the whole range. For those out there who currently use current shunts to capture dynamic current this means no more worrying about shunt loading effects when the current goes to the high end of the range and no more worrying about poor accuracy and resolution when the current dips to the low end of the range. For those currently using high performance supplies to capture dynamic current this means no more running tests multiple times at different measurement ranges to get each piece of the current profile puzzle and then having to piece it together. The figure gives a visual picture of what the seamless ranging can do.
For more information on the new N6781A click here
For more information on the new N6782A click here