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university:courses:electronics:electronics-lab-20 [04 Oct 2021 13:29] – Antoniu Miclausuniversity:courses:electronics:electronics-lab-20 [02 Feb 2023 21:16] (current) – [Activity: CMOS Amplifier stages] Doug Mercer
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-====== Activity: CMOS Amplifier stages======+====== Activity: CMOS Amplifier stages - ADALM2000======
  
 ===== Objective: ===== ===== Objective: =====
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 ======  Chopper Amplifier ====== ======  Chopper Amplifier ======
  
-In this part of the lab activity, the CD4069A(UB) un-buffered hex CMOS inverter and a CD4066 Quad analog switch are used as elements of a chopper amplifier. Reconnect the breadboard as indicated in figure 6. Referring to figure 6, the various functions of this circuit can be determined. The two inverters on the bottom left of figure 6 create a square wave and its complement to drive the switch controls of the CD4066. These square waves drive the switches, with switches A and B functioning as a single-pole, double-throw switch on the input, and switches C and D performing the same function on the output. The other inverter at the top of figure 6 is used as an AC coupled Amplifier similar to what we just looked at in figure 4.+In this part of the lab activity, the CD4069A(UB) un-buffered hex CMOS inverter and a CD4066 Quad analog switch are used as elements of a chopper amplifier. Reconnect the breadboard as indicated in figure 11. Referring to figure 11, the various functions of this circuit can be determined. The two inverters on the bottom left of figure 11 create a square wave and its complement to drive the switch controls of the CD4066. These square waves drive the switches, with switches A and B functioning as a single-pole, double-throw switch on the input, and switches C and D performing the same function on the output. The other inverter at the top of figure 6 is used as an AC coupled Amplifier similar to what we just looked at in figure 6.
  
 In operation, the input signal is modulated by the input switches, amplified by the ac amplifier, and then demodulated by the output switches. The 20 kΩ, 560 pF low pass filter minimizes the high frequency ripple in the output. In operation, the input signal is modulated by the input switches, amplified by the ac amplifier, and then demodulated by the output switches. The 20 kΩ, 560 pF low pass filter minimizes the high frequency ripple in the output.
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 {{ :university:courses:electronics:a20_f6.png?530 |}} {{ :university:courses:electronics:a20_f6.png?530 |}}
  
-<WRAP centeralign> Figure 10 Chopper amplifier </WRAP>+<WRAP centeralign> Figure 11 Chopper amplifier </WRAP>
  
 ==== AC Amplifier Response to Pulse Modulated Signals ==== ==== AC Amplifier Response to Pulse Modulated Signals ====
university/courses/electronics/electronics-lab-20.txt · Last modified: 02 Feb 2023 21:16 by Doug Mercer

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