The default JFE2140EVM configuration operates within the specified voltage and current regions of the JFE2140 N-channel JFET and the OPA202 op amp. User modifications can be made to the JFE2140EVM. Reference the respective product data sheets to maintain the specified operating conditions for each device. In addition to observing the specified current and voltage levels, use proper electrostatic discharge precautions when handling and applying the EVM.