Design an all CMOS differential cascode amplifier shown in Figure 1 including the current source circuit to obtain differential voltage gain of 45 and CMRR = 40 dB.
Design an all CMOS differential cascode amplifier shown in Figure 1 including the current source circuit to obtain differential voltage gain of 45 and CMRR = 40 dB.
1. Determine values for transistors’ parameters.
2. Verify differential and common mode voltage gains of the design with computer simulation.
3. Verify simulation results with hand-based analysis.
Note:
If necessary, a passive RC circuit (as shown in Figure) can be used as the load part of the designed amplifier.
Figure 1.
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