spring 2004 test 1

spring 2004 test 1 - 7 For extra credit complete the design...

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Name:_________________________________ Spring 2004 SSN:____________________ Test # 1 1. Find the power gain for the two port model of an amplifier system below. 2. Create a two port model for the circuit below.  You can make approximations if  you state clearly what they are.  
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3. Perform the DC bias analysis for the circuit below.  Find the DC power supplied  to this circuit.  (diff amp with BJT amp) 4. Determine the maximum input voltage that will not be distorted for the circuit  below.
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5. Design an IC BJT current mirror that will supply 1 mA of current to a differential  amplifier.  Because it is IC, we can assume transistors can be made to be  identical.  Your maximum resistor value is 100 k .  V EE  = -12 V 6. Sketch a circuit that can use your design to bias an additional differential  amplifier stage with .8 mA. Just sketch the circuit, but do not actually design it. 
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Unformatted text preview: 7. For extra credit, complete the design. 8. Why is a BJT amplifier with an active bypass a good IC solution? 9. FET’s are useful as inverting amplifiers, but not when they have resistive loads. Why are FET’s with resistive loads not ideal, and sketch a circuit that would make using FET’s more desirable. 10. The FET has infinite input impedance. What advantage does this give us in an amplifier circuit? 11. An FET differential amplifier has a differential mode gain of 3 dB and a common mode rejection ratio (CMRR) of 65 dB. What is the common mode gain? 12. A BJT differential amplifier has a differential mode gain of 20 dB, and a CMRR of 30dB. Which amplifier is the better choice, this BJT or the FET in problem 11?...
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spring 2004 test 1 - 7 For extra credit complete the design...

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