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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sanchez-Lopez, C. Carrasco-Aguilar, M.A. Morales-Lopez, F.E. Ochoa-Montiel, R. Ilhuicatzi-Roldan, R. |
| Copyright Year | 2014 |
| Description | Author affiliation: Univ. Autonoma de Tlaxcala (UAT), Tlaxcala de Xicohtencatl, Mexico (Sanchez-Lopez, C.; Carrasco-Aguilar, M.A.; Morales-Lopez, F.E.; Ochoa-Montiel, R.; Ilhuicatzi-Roldan, R.) |
| Abstract | This paper describes SPICE-compatible macromodels to model the nonlinear behavior of operational amplifiers (Op Amp) and current feedback operational amplifiers (CFOA). The proposed macro-models include not only those performance parameters more important of the Op Amp and CFOA like the dynamic range, slew-rate, DC gain and gain-bandwidth product, but parasitic resistors and capacitors associated to the input-output terminals are also included. To validate the proposed macro-models, non-inverting amplifiers and one nonlinear resistor called saturated nonlinear function series (SNFS) were built to be used as test vehicles. First, the UA741 and AD844AN foundry-provided macro-models were used for generating frequency-domain numerical simulations of each no-inverting amplifier. Simulation results were compared with numerical results obtained by means of the proposed macro-models, showing a good accuracy among them. Afterwards, a chaotic signal experimentally obtained was applied as excitation signal for each SNFS built with the foundry-provided macro-models and with the proposed macro-models, confirming good agreement among theoretical simulations and experimental tests. Our results indicate that the proposed macro-models can be used either frequency- or time-domain for forecasting the behavior of linear and nonlinear circuits without that the accuracy worsens and in a less time compared with the foundry-provided macro-models. |
| Starting Page | 1 |
| Ending Page | 4 |
| File Size | 540368 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479975846 |
| DOI | 10.1109/CONCAPAN.2014.7000420 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2014-11-12 |
| Publisher Place | Panama |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Operational amplifiers Resistors Current feedback operational amplifier Analytical models Operational Amplifier Accuracy Macro-model Educational institutions SPICE Nonlinear circuits Integrated circuit modeling Modeling |
| Content Type | Text |
| Resource Type | Article |
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