PSpice User Guide

PSpice User Guide

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PSpice User Guide Mixed analog/digital simulation October 2019 648 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. To create a custom digital power supply Note: This procedure applies to all logic families. 1. Place the appropriate power supply part listed in Table 15-3 in your design (by logic family). 2. Rename the power supply power and ground pins (PSPICEDEFAULTNET properties). 3. Reset the power supply power and ground voltages as required. 4. For any digital part instance that uses the power supply, set its appropriate PSPICEDEFAULTNET pin properties to the power and ground pins created by the secondary power supply. Overriding CD4000 power supply voltage throughout a design Designs using CD4000 parts often require power supply voltages other than the default 5.0 volts supplied by the standard CD4000_PWR power supply part. If needed, you can override the power supply voltage for all CD4000 parts in a design. The default power supply nodes used by CD4000 parts are named $G_CD4000_VDD and $G_CD4000_VSS as created by the power supply subcircuit CD4000_PWR. This supply defaults to 5.0 volts. You can override the voltage across these two nodes by defining values for the parameters named CD4000_VDD and CD4000_VSS that are referenced by the CD4000_PWR subcircuit definition. ECL_10K_PWR ECL_100K_PWR VEE VCC1 VCC2 ECL power supply voltages PSPICEDEFAULTNET ECL hidden power supply pins for VEE, VCC1 and VCC2 Part name Property Description

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