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Asked: 2023-07-18T11:36:55-04:00 In:

15.5 An oscillator is formed by loading a transconductance amplifier having a positive gain with a parallel RLC circuit and connecting the output directly to the input (thus applying positive feedback with a factor β = 1). Let the transconductance amplifier have an input resistance of 5 kΩ and an output resistance of 5 kΩ. The LC resonator has L = 1 µH, C = 100 pF, and Q = 50. For what value of transconductance Gm will the circuit oscillate? At what frequency? 0.6 mA/V; 15.92 MHz

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15.5 An oscillator is formed by loading a transconductance amplifier having a positive gain with a parallel RLC circuit and connecting the output directly to the input (thus applying positive feedback with a factor β = 1). Let the transconductance amplifier have an input resistance of 5 kΩ and an output resistance of 5 kΩ. The LC resonator has L = 1 µH, C = 100 pF, and Q = 50. For what value of transconductance Gm will the circuit oscillate? At what frequency?

0.6 mA/V; 15.92 MHz

microelectronics by sedra & smith chapter 15 questions

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