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You need to design a sucessive approximation analog-to-digital converter (ADC) for a multimedia application. The input dynamic range must accommodate a maximum input of 3.0V  with a minimum resolution of 1mV. What is the minimum number of bits to attend this requirement?

m = 10-3

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Question 2

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The feedback amplifier presented below has a cutoff frequency of 50 kHz. What is the approximate unity gain frequency of the operational amplifier A1?

k = 103, M = 106

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The circuit below uses a bipolar junction transistor Q1. Since  VBEQ = 0.6V  and β = 500 are the quiescent base-emitter voltage and the current gain of the transistor, calculate the approximate power dissipated in the circuit.

 k = 103, m = 10-3


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In the circuit below, what is the equivalent resistance seen at nodes X and Y?

 

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In the circuit below, what is the power delivered to the circuit by the 10 V supply?

 

questão2

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In the circuit below, what are the values of currents i1 and i2?

 

Figura 1 

 

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The operation amplifier A1 can accomodate  a sinusoidal input of 2 Vpeak at a maximum frequency of 125 kHz without slew rate distorsion. What is the maximum output slew rate (SR) at the outputof A1?

µ = 10-6, k = 103, M = 106

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Question 8

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The circuit uses a Metal Oxide Semiconductor Field Effect Transistor (MOSFEF) M1 with Vtn = 1.0 V and μoCox = 0.2 mA / V2. Assuming its current is given by the quadratic model, what is the value of the voltage Vx?

Obs: m = 10
-3

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What is the voltage gain Av=Vo/Vi provided by the circuit with the operation amplifier A1 presented below?

k = 103

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