Symbolic analysis of analog circuits containing voltage mirrors and current mirrors
- Author(s): Tlelo-Cuautle, E.
- Sánchez-López, C.
- Martínez-Romero, E.
- Tan, Sheldon X.-D.
- et al.
Published Web Locationhttps://doi.org/10.1007/s10470-010-9455-y
The pathological elements voltage mirror (VM) and current mirror (CM) have shown advantages in analog behavioral modeling and circuit synthesis, where many nullor-mirror equivalences have been explored to design and to transform voltage-mode circuits to current-mode ones and viceversa. However, both the VM and CM have not equivalents to perform automatic symbolic circuit analysis. In this manner, we introduce nullor-equivalents for these pathological elements allowing to include parasitics and to perform only symbolic nodal analysis. The nullor-equivalent of the CM is extended to provide multiple-outpus (MO-CM). Finally, two active filters containing VMs, CMs and MO-CMs are analysed to show the usefulness of the models.