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Transcript
EE2201 - LAB 4 CMOS Circuits and Applications: iD-vDS Characteristic Digital Switch Applications: CMOS Logic Inverter Analog Switch Applications: Low Dostortion Audio Mute PURPOSE: The purpose of this laboratory assignment is to investigate the P-channel enhancement mode MOSFET and complementary (both P- and N-channel MOSFET) circuits. Upon completion of this lab you should be able to: ï·ï Recognize the cutoff and triode regions of operation for the P-channel MOSFET. ï·ï Characterize the relationship between on resistance rDS and gate drive voltage vGS in the resistive portion of the triode region. ï·ï Extract MOSFET parameters kâp(W/L) and threshold voltage Vt from triode region measurements. ï·ï Apply the P-and N-channel MOSFET in the digital application of a CMOS logic inverter and measure the propagation delay for high-to-low and low-to-high transition. ï·ï Apply the P-and N-channel MOSFET in a transmission gate as an analog switch in an audio mute application. ï·ï Use the effect of supply voltage on propagation delay to develop a voltage controlled oscillator (VCO). MATERIALS: ï·ï ï·ï ï·ï ï·ï ï·ï ECE Lab Kit DC Power Supply DVM Function Generator Oscilloscope NOTE: Be sure to record ALL results in your laboratory notebook. 2
