Detailed Op Amp - MapleSim Help
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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

 See Also