Hello, I plan to use the LTC2400 on a future project, so I bought its demoboard. I have no problem using the demoboard but I am currently in the process of making my own PCB layout for my future project. I have questions:
- The LTC2400 datasheet mentions a 10uF tantalum capacitor. What is the recommended ESR rating? I tried checking the demoboard schematic but the 10uF capacitor was not tantalum so I am confused right now.
- In my project, the LTC2400 will be used to measure the increasing or decreasing voltage of the device under test. This device under test will be powered by a current source. As you can see, there is a constant current directed to the device, but the device will experience a changing voltage since the device's ohmic resistance will purposely change due to something else from the design. Given this experienced changing voltage, what reference value should I use? The maximum voltage that the device shall see is about 5V. Is 5V a suitable reference value for the LTC2400? I apologize for asking since I have not had any experience with LTC2400 + current sources.