Worked Examples Practical Op-Amp Design Schmitt Trigger

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Presentation transcript:

Worked Examples Practical Op-Amp Design Schmitt Trigger Precision Rectifier

Non-Inverting Amplifier Transient analysis waveform (sine wave, 0V offset, 1.38V amplitude, 1kHz) a.c. analysis magnitude Independent voltage source

Microcap Demo TC-OPAMP1.CIR

Schmitt Trigger Design Design an inverting Schmitt trigger with the following specification: Supply voltages = +9V and 0V Saturation levels = 0.5V and 8.5V Switching thresholds = 6V and 7V

(1) (2) (2) – (1)

Let

Equivalent if: Open-circuit voltages are the same Short-circuit currents are the same

Microcap Demo TC-OPAMP1A.CIR

Precision Rectifier Microcap Demo TC-OPAMP2.CIR

Summary: Examinable Op-Amp Stuff Analysis Amplifiers: gain, cut-off frequency, in/out impedances, full-power bandwidth etc. Comparators: switching level(s), effects of slew rate etc., oscillator circuit, applications. Precision Rectifier: waveforms, slew rate limiting etc. Design Amplifiers, comparators, oscillators.