Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision |
| university:courses:electronics:electronics-lab-18 [12 Jul 2019 13:58] – Pop Andreea | university:courses:electronics:electronics-lab-18 [23 Jan 2020 21:54] – [For Further Study:] Doug Mercer |
|---|
| ===== Procedure: ===== | ===== Procedure: ===== |
| |
| Configure waveform generator 1 as a 100 Hz triangle wave with an amplitude of 9 volts and an offset of +500 mV. This will swing the voltage on the NMOS switch transistor from +5 volts to -4 volts. We can not swing the voltage all the way to -5 volts because of the NPN current source Q<sub>2</sub>. Be sure to turn on the external user power supplies (Vp and Vn) before running the waveform generator. Configure the scope screen in XY mode with C1 on the X axis, and C2 (the voltage across the switch) on the Y axis. Use the math function to calculate the resistance (C2 / 1mA). Note: You can get a more precise estimate of the current source by measuring the voltage across R<sub>1</sub> and its actual resistance. | Configure waveform generator 1 as a 100 Hz triangle wave with an amplitude of 9 volts peak-to-peak and an offset of +500 mV. This will swing the voltage on the NMOS switch transistor from +5 volts to -4 volts. We can not swing the voltage all the way to -5 volts because of the NPN current source Q<sub>2</sub>. Be sure to turn on the external user power supplies (Vp and Vn) before running the waveform generator. Configure the scope screen in XY mode with C1 on the X axis, and C2 (the voltage across the switch) on the Y axis. Use the math function to calculate the resistance (C2 / 1mA). Note: You can get a more precise estimate of the current source by measuring the voltage across R<sub>1</sub> and its actual resistance. |
| {{ :university:courses:electronics:a18_nmos_ss.png?300 |}} | {{ :university:courses:electronics:a18_nmos_ss.png?300 |}} |
| |
| |
| ADI Mini Tutorial on [[http://www.analog.com/static/imported-files/tutorials/MT-088.pdf|Analog Switches]]\\ | ADI Mini Tutorial on [[http://www.analog.com/static/imported-files/tutorials/MT-088.pdf|Analog Switches]]\\ |
| R<sub>ON</sub> Modulation in CMOS [[http://www.analog.com/static/imported-files/tech_articles/99941520Ron_Modulati_Whitepaper.pdf|Switches and Multiplexers]] | R<sub>ON</sub> Modulation in CMOS [[http://www.analog.com/static/imported-files/tech_articles/99941520Ron_Modulati_Whitepaper.pdf|Switches and Multiplexers]]\\ |
| | [[http://www.analog.com/library/analogdialogue/archives/45-05/switch_mux.html|Switches and Multiplexers]]\\ |
| | [[https://www.analog.com/media/en/analog-dialogue/raqs/raq-issue-173.pdf|On Building Physically Accurate Analog Switch Macromodels]] |
| |
| ====== Extra Challenge Activity: ====== | ====== Extra Challenge Activity: ====== |
