The CD4007 chip consists of three complementary pairs of N- and P-channel enhancement mode MOS transistors.  The CD4007 is part of the CD4000 family and was originally made for digital purposes to realize logic circuits such as inverter, NAND and NOR. But as the pins of each transistors are easily accecible they can be also used to realize analog circuits.  Since these chips are made for digital design, i.e. used at switches, no simulations models are provided.  The CD4007 is made by several providers such as Texas instrument and Fairchild, each using their own processes and technologies which gives the circuits slightly different analog properties. All inputs of the chip are protected from static discharge by diodes clamped to VDD and VSS. These diodes add unwanted paracitic capacitances which limit the speed of the chip and as no data about these parasitics are provided, they will be difficult to model accuratly. Dr Lynn F. Fuller from department of Electrical and Microelectronic Engineering at Rochester Institute of Technology did an attamp to reveal the secrets of the CD4007 chip to provide a simulation model of the Chip.

The models that Dr lynn provided can be found here.

• Amplifiers

• Oscillators

• Schmidt triggers

• Digital Logic Circuits

Resources:

https://analog-staging.dw1.cosmocode.de/university/courses/alm1ks/alm-lab-28

Silveira, M A G & Santos, Roberto & Medina, N.H. & F.G.Cunha, & F.G.Leite, & K.H.Cirne, & Added, N. & Aguiar, Valéria. (2013). Radiation Effect Mechanisms in Electronic Devices. 10.22323/1.194.0077.