Issue link: https://resources.pcb.cadence.com/i/1180526
PSpice User Guide Analog behavioral modeling October 2019 326 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. ABM part templates For most ABM parts, a single PSpice "E" or "G" device declaration is output to the netlist per part instance. The PSPICETEMPLATE property in these cases is straightforward. For example the LOG part defines an expression variant of the E device with its output being the natural logarithm of the voltage between the input pin and ground: E^@REFDES %out 0 VALUE { LOG(V(%in)) } The fragment E^@REFDES is standard. The "E" specifies a PSpice A/D controlled voltage source (E device); %in and %out are the input and output pins, respectively; VALUE is the keyword specifying the type of ABM device; and the expression inside the curly braces defines the logarithm of the input voltage. Several ABM parts produce more than one primitive PSpice A/D device per part instance. In this case, the PSPICETEMPLATE property may be quite complicated. An example is the DIFFER (differentiator) part. This is implemented as a capacitor in series with a current sensor together with an E device which outputs a voltage proportional to the current through the capacitor. The template has several unusual features: it gives rise to three primitives in the PSpice A/D netlist, and it creates a local node for the connection of the capacitor and its current-sensing V device. C^@REFDES %in $$U^@REFDES 1\n V^@REFDES $$U^@REFDES 0 0v\n E^@REFDES %out 0 VALUE {@GAIN * I(V^@REFDES)} Note: For clarity, the template is shown on three lines although the actual template is a single line. The fragments C^@REFDES, V^@REFDES, and E^@REFDES create a uniquely named capacitor, current sensing V device, and E device, respectively. The fragment $$U^@REFDES creates a name suitable for use as a local node. The E device generates an output proportional to the current through the local V device.