Model Link: Cd4051 Spice

Finding a dedicated SPICE model for the analog multiplexer can be challenging because it is a legacy CMOS part. Many manufacturers do not provide standalone SPICE models for these older logic ICs directly on their product pages. TI E2E support forums Available Models and Alternatives LTspice Community Models

The CD4051 is a highly versatile analog multiplexer/demultiplexer IC that has been widely used in various electronic circuits for decades. To ensure accurate and reliable simulations of circuits incorporating the CD4051, a precise SPICE model is essential. In this article, we will explore the importance of the CD4051 SPICE model, provide a link to a reliable source, and offer guidance on how to effectively use it in your circuit simulations. cd4051 spice model link

• Link: TI CD4051B Product Page
• Action: Scroll down to the "Design & development" tab and look for "PSpice Model."
• Format: They typically provide a .lib or .mod text file. These are behavioral models that simulate the analog switching resistance ($R_on$) and the digital control logic accurately.

Maxim (now part of Analog Devices) made the MAX4051, a pin-compatible upgrade. While not identical, the MAX4051 SPICE model is often interchangeable for low-frequency work. Finding a dedicated SPICE model for the analog

Frustration turned into determination. She refined her search: cd4051 spice model ti direct link Link: TI CD4051B Product Page Action: Scroll down

How to Import the CD4051 Model into Popular Simulators

Introduction

• Cause: The CD4051 model has high-impedance states that confuse the solver.
• Fix: Add a tiny resistance (e.g., R=1e-12) or capacitance (C=1fF) to floating nodes. Use the uic (Use Initial Conditions) flag in your .TRAN analysis.