According to Kirchhoff's Current Law, the sum of currents on a nodes is equal to 0. However, Spectre notates currents in a different way. Spectre solver notates the current value reporting on a subcircuit or a primitive as a positive value '+' when the current enters the port and a negative value '–' when the current flows out in the reverse direction. SimVision MS follows current direction conversion model of Spectre. Therefore, in the Browse Currents sidebar, the current value of a terminal is positive if current is coming in and negative if current is going out.
Consider the following example screenshot. Two current values in the table are positive indicating inflow of current and one is negative indicating outflow of current.
Related Topics
Checking the Current Distribution
Tracing the Critical Signal Path
Checking the Current Distribution at Different Levels in the Hierarchy