SPICE Compatibility Flag (compatible)

The SPICE compatibility flag (compatible) is a parameter you can specify in an .options statement. This parameter solves some SPICE compatibility issues. The valid values for compatible are spectre, spice2, spice3, and cdsspice. This parameter affects two areas:

• Energy band gap
  If you set compatible to spectre, the Spectre simulator uses a more physics-based temperature equation to calculate the energy band gap. For all other values, the Spectre simulator uses the SPICE temperature equation. This different energy gap calculation affects only devices that use the common junction codes such as MOSFET, diode, JFET, and GaAs. BJT is not affected.
• MOSFET Level-2
  The MOSFET Level-2 model includes a model parameter smooth, which chooses an improved (smoother and faster) model (smooth = yes) or the original SPICE Level-2 model (smooth = no). The default value of smooth is yes. If compatible is set to a value other than spectre, the Spectre simulator sets smooth to no regardless of the value you specify.

Related Topics

Scaling Factors (scale and scalem)

imelt and imax

Multiplication Factor (m)

Parameters Common to All Devices