Stray insensitive switched capacitor composite operational amplifiers
Bingham, Eldon Wade
Fargues, Monique P.
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In this research, analog active circuits are designed combining the properties of switched capacitors and composite operational amplifiers. This combined design improves upon the single operational amplifier's finite dc gain, smaller bandwidth, lower slew rate, finite input impedance, and less than ideal output impedance. The switched capacitor is implemented using both the toggle switched capacitor and the modified open-circuit floating resistor techniques. The composite operational amplifier is implemented using the C2OA-1 and C2OA-2 designs from the CNOA-I possibilities. These four designs are evaluated in a finite-gain circuit and their results are compared with the results obtained from the continuous circuits of the same design.
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