Detailed Op Amp - MapleSim Help
For the best experience, we recommend viewing online help using Google Chrome or Microsoft Edge.

Op Amp Detailed

Detailed model of an operational amplifier

 Description The OpAmp Detailed (or Op Amp Detailed) component is a general operational amplifier model. The model consists of five functional stages: input, gain, frequency response, slew rate, and output. Each stage contains data sheet parameters to be modeled.

Connections

 Name Description Modelica ID $p$ Positive pin of the input port p $m$ Negative pin of the input port m $\mathrm{outp}$ Output pin outp ${p}_{\mathrm{supply}}$ Positive output voltage limitation p_supply ${m}_{\mathrm{supply}}$ Negative output voltage limitation m_supply

Parameters

 Name Default Units Description Modelica ID Input ${R}_{\mathrm{dm}}$ $2·{10}^{6}$ $\mathrm{\Omega }$ Input resistance (differential input mode) Rdm ${R}_{\mathrm{cm}}$ $2·{10}^{9}$ $\mathrm{\Omega }$ Input resistance (common mode) Rcm ${C}_{\mathrm{in}}$ $1.4·{10}^{-12}$ $F$ Input capacitance Cin ${V}_{\mathrm{os}}$ $0.001$ $V$ Input offset voltage Vos ${I}_{b}$ $8·{10}^{-8}$ $A$ Input bias current Ib ${I}_{\mathrm{os}}$ $2·{10}^{-8}$ $A$ Input offset current Ios Gain ${v}_{\mathrm{cp}}$ $0$ $V$ Correction value for limiting by p_supply vcp ${v}_{\mathrm{cm}}$ $0$ $V$ Correction value for limiting by msupply vcm ${A}_{\mathrm{vd0}}$ $106$ Differential amplifier [dB] Avd0 $\mathrm{CMRR}$ $90$ Common-mode rejection [dB] CMRR Frequency Response ${f}_{\mathrm{p1}}$ $5$ $\mathrm{Hz}$ Dominant pole fp1 ${f}_{\mathrm{p2}}$ $2·{10}^{6}$ $\mathrm{Hz}$ Pole frequency fp2 ${f}_{\mathrm{p3}}$ $2·{10}^{7}$ $\mathrm{Hz}$ Pole frequency fp3 ${f}_{\mathrm{p4}}$ $1·{10}^{8}$ $\mathrm{Hz}$ Pole frequency fp4 ${f}_{z}$ $5·{10}^{6}$ $\mathrm{Hz}$ Zero frequency fz Slew Rate ${\mathrm{sr}}_{p}$ $0.5·{10}^{6}$ $\frac{V}{s}$ Slew rate for increase sr_p ${\mathrm{sr}}_{m}$ $0.5·{10}^{6}$ $\frac{V}{s}$ Slew rate for decrease sr_m ${T}_{s}$ $1.2·{10}^{-6}$ $s$ sampling time Ts Output ${R}_{\mathrm{out}}$ $75$ $\mathrm{\Omega }$ Output resistance Rout ${I}_{{\mathrm{max}}_{\mathrm{so}}}$ $0.025$ $A$ Maximal output current (source current) Imaxso ${I}_{{\mathrm{max}}_{\mathrm{si}}}$ $0.025$ $A$ Maximal output current (sink current) Imaxsi