sycan.components.blocks.opamp

Op-amp models packaged as SubCircuit instances.

Two flavours are offered:

  • OPAMP — ideal single-VCVS (infinite bandwidth, zero output impedance).

  • OPAMP1 — first-order model with finite gain-bandwidth product and optional output impedance.

Higher-fidelity op-amp models (slew limit, input offset, etc.) can be added as additional SubCircuit subclasses.

Classes

OPAMP(name, in_p, in_n, out[, A])

Ideal single-VCVS op-amp.

OPAMP1(name, in_p, in_n, out[, A, GBW, Z_out])

First-order op-amp with finite gain-bandwidth product and output Z.
class sycan.components.blocks.opamp.OPAMP(name, in_p, in_n, out, A=None)[source]

Bases: SubCircuit

Ideal single-VCVS op-amp.

Parameters:

  • name (str) – Instance designator (e.g. "X1").

  • in_p (str) – Parent-scope nodes wired to the non-inverting input, inverting input, and output pin respectively.

  • in_n (str) – Parent-scope nodes wired to the non-inverting input, inverting input, and output pin respectively.

  • out (str) – Parent-scope nodes wired to the non-inverting input, inverting input, and output pin respectively.

  • A (Optional[cas.Expr]) – Open-loop voltage gain. Defaults to a per-instance symbol A_<name> so that A -> oo limits recover the ideal closed-loop behaviour.

class sycan.components.blocks.opamp.OPAMP1(name, in_p, in_n, out, A=None, GBW=None, Z_out=None)[source]

Bases: SubCircuit

First-order op-amp with finite gain-bandwidth product and output Z.

Builds a single-pole dominant-pole model:

H(s) = A · ω_p / (s + ω_p)   with ω_p = 2π·GBW / A

followed by an optional series output impedance Z_out.

Parameters:

  • name (str) – Instance designator.

  • in_p (str) – Parent-scope nodes.

  • in_n (str) – Parent-scope nodes.

  • out (str) – Parent-scope nodes.

  • A (Optional[Value]) – DC open-loop gain (defaults to A_<name>).

  • GBW (Optional[Value]) – Gain-bandwidth product in Hz (default None = ideal, infinite bandwidth).

  • Z_out (Optional[Value]) – Output impedance in Ω (default None = 0).