What's Good About the Capture-PSpice Flow? The 16.6-2015 Release Has Several New Enhancements!

In the Capture-PSpice 16.6-2015 release, the following enhancements have been added:

• 20 new chapters have been added in the PSpice Application Notes
• Enhancements to the Capture Start Page
• New simulation macro models for the Capture-PSpice Flow

20 New Chapters Added to PSpice Application Notes

• Modeling Potentiometers and Variable Resistors: This chapter provides an overview of modeling potentiometers and variable resistors using OrCAD Capture. It also provides an overview of how to simulate example circuits using PSpice.
• Filter Models Implemented with Analog Behavioral Modling (ABM): This chapter covers how the filter behavioral models are developed and implemented using the Laplace function of PSpice. Given the filter bandwidth and order, the models simulate lowpass, highpass, bandpass, and band-reject filters.
• Modeling Voltage-Controlled Resistors and Capacitors in PSpice: This chapter illustrates how to control Q of a series RLC filter network and change the frequency of a Wien bridge oscillator using voltage-controlled impedance.
• Modeling Voltage-Controlled Oscillators: This chapter provides an overview of modeling voltage-controlled oscillators (VCOs), such as dual-integrator VCO and controlled reactance VCO using PSpice.
• Creating Impedances with Behavioral Modeling: This chapter illustrates the method of creating non-linear resistors using analog behavioral modeling by creating the transfer function for a linear conductance.
• Ferrite Bead Models to Analyze EMI Suppression: This chapter discusses the importance of ferrite beads for in electromagnetic interference (EMI) and using these models in high-speed designs. It also provides guidelines on the selection of a bead model.
• Modeling Schottky Diodes: This chapter explains how the model parameters IS and N can be modified to set the forward voltage drop of a Schottky diode.
• Modeling Quartz Crystals: This chapter explains how a quartz crystal can be modeled using a series RLC circuit and a parallel (package) capacitor.
• Including Relays in PSpice Simulations: In this chapter, two approaches for modeling the relay are discussed, the mechanical model approach, and the purely electrical (behavioral) models approach.
• Radiation Effect Modeling:The information in this chapter provides a starting point for those interested in using PSpice for radiation effects analysis.
• Using PSpice to Simulate the Discharge Behavior of Common Batteries: This chapter presents PSpice behavioral models for simulating the following battery types: non-rechargeable alkaline cells, rechargeable nickel-cadmium (NICD) cells, nickel-metal-hydride (NIMH) cells, and sealed lead-acid cells.
• Brushless DC Motor Model: Although PSpice is designed as an electronic circuit simulator, you can also use it to simulate mechanical or electromechanical systems. An example of an electromechanical system which can benefit from PSpice simulation is a brushless DC motor. This chapter discusses the modeling and simulation of a brushless DC Motor.
• Using the Inductor Coupling Symbols: This chapter covers different topics explaining the use of inductor coupling symbols in a Capture - PSpice project.
• Improving Simulation Accuracy when Using Passive Components: This chapter covers various examples to describe the effects of frequency and temperature on the behavior of selected common passive components.
• Analyzing Amplifier Settling Time: In this chapter, the settling time of LF411 amplifier in unity gain configuration will be computed as a function of load capacitance by implementing relevant goal functions.
• Obtaining Steady State of High-Q Circuits Using Open Loop Response: This chapter explains how to simulate High-Q circuits.
• Obtaining S-Parameter Data from the Probe Window: This chapter explains measuring S parameters in PSpice using probe measurements.
• Digital Worst-Case Timing Simulation: This chapter explains the digital worst-case timing simulation feature as a function of component propagation delay tolerances to evaluate the timing behavior of digital and mixed analog/digital designs.
• Digital Frequency Comparator: This chapter illustrates how a hierarchical all-digital design with two implementation views can be defined in OrCAD Capture, and subsequently simulated in PSpice. The example used in this chapter is a basic digital comparator.
• Creating Eye Displays Using Probe: This chapter discusses the eye display creation using a probe in PSpice

Note: You can access Learning PSpice only in Capture-PSpice flow. To access Learning PSpice, choose Help -- Learning PSpice in Capture.

Enhancements to the Capture Start Page

The Capture start page in 16.6-2015 has been given a new look and interface. To get to the start page in Capture, select Help - Start Page. You can access:

• Capture resources, such as videos, webinar sessions, and whitepapers
• Capture applications to help designers
• Reference designs to help you start working on Capture

New Simulation Macro Models for the Capture-PSpice Flow

A new library called ltspicedevices.olb has been added in the Capture library at <installation>\tools\capture\library\pspice. The library contains 19 new devices that can be used to migrate your design from LTSpice to the Capture - PSpice flow, including:

• LT_AND
• LT_AND3
• LT_AND4
• LT_AND5
• LT_OR
• LT_OR3
• LT_OR4
• LT_OR5
• LT_BUF
• LT_BUF1
• LT_EX-OR
• LT_INV
• LT_Modulator
• LT_OTA
• LT_OTA_ASYM
• LT_OTA_LINEAR
• LT_PHASEDET
• LT_RSLATCH
• LT_SAMPLEHOLD

I look forward to your comments on these new capabilities.

Jerry “GenPart” Grzenia