lab4sample_09

# lab4sample_09 - V 2(5 pts • A plot such as the one shown...

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1 ECE 3150: Lab 4 Sample Measurements Spring 2009 Experiment 1: Differential Pair Current–Voltage Characteristics A plot, such as the one shown at the top of the next page on the left, showing I 1 , I 2 , I dm = I 1 - I 2 , and 2 I cm = I 1 + I 2 as a function of V dm = V 1 - V 2 for two values of V 2 and a value of V b at or below threshold. Comments on whether or not the current–voltage characteristics change with V 2 .

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2 A plot, such as the one shown above on the right, showing V as a function of V dm = V 1 - V 2 for two values of V 2 . (15 pts) Comments on how V behaves as V 1 goes from below V 2 to above V 2 . (5 pts) • Two values of G dm from the slope of the I dm vs V dm curves around V dm =0V. Comments on how the value of G dm changes with V 2 . The values of G dm from the data shown above on the left were 7.68 μ A/V, 8.31 μ A/V, and 8.88 μ A/ V . In this case, the value of G dm changed by about 15% for a 2V change in

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Unformatted text preview: V 2 . (5 pts) • A plot, such as the one shown below on the left, showing I 1 , I 2 , I dm , and 2 I cm as a function of V dm for a value of V b above threshold. A plot, such as the one shown below on the right, showing V as a function of V dm . (15 pts) • Comments on how the behavior of the circuit changes as the bias current level changes from weak or moderate inversion to strong inversion. (5 pts) 3 Experiment 2: Differential Pair Output Voltage Range (20 pts) • A plot, such as the one shown below on the left of I 1 and I 2 as a function of either V out1 or V out2 . (10 pts) • A plot, such as the one shown below on the right of V as a function of either V out1 or V out2 . Only V 2 =3V shown here. V will shift in proportion to V 2 , minus the body effect. 4 (10 pts)...
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lab4sample_09 - V 2(5 pts • A plot such as the one shown...

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