Question 1 |

In the circuit shown below, V_{1} and V_{2} are bias voltages. Based on input and output impedances, the circuit behaves as a

voltage controlled voltage source. | |

voltage controlled current source. | |

current controlled voltage source. | |

current controlled current source. |

Question 1 Explanation:

Here from circuit,

M_{1} is common-gate amplifier and M_{2} behaves as an active load.

By using properties of common gate (CG) amplifier,

Input impedance \left(R_{i}\right) is low

Output impedance \left(R_{0}\right) is high

So, it is a current amplifier.

Current amplifier is a current controlled current source.

Question 2 |

A good transimpedance amplifier has

low input impedance and high output impedance. | |

high input impedance and high output impedance. | |

high input impedance and low output impedance. | |

low input impedance and low output impedance. |

Question 2 Explanation:

A good transimpedance amplifier should have low
input impedance and low output impedance

Question 3 |

A good transconductance amplifier should have

high input resistance and low output resistance | |

low input resistance and high output resistance | |

high input and output resistances | |

low input and output resistance |

Question 3 Explanation:

A good transconductance amplifier should have
very high input resistance and very high output
resistance.

Question 4 |

The desirable characteristics of a transconductance amplifier are

high input resistance and high output resistance | |

high input resistance and low output resistance | |

low input resistance and high output resistance | |

low input resistance and low output resistance |

Question 5 |

The feedback topology in the amplifier circuit ( the base bias circuit is not shown
for simplicity) in the figure is

Voltage shunt feedback | |

Current series feedback | |

Current shunt feedback | |

Voltage series feedback |

Question 5 Explanation:

The feedback topology in the amplifier circuit is

current series because

Sampling \rightarrow Current

Mixing \rightarrow Series

So current-series feedback

current series because

Sampling \rightarrow Current

Mixing \rightarrow Series

So current-series feedback

There are 5 questions to complete.