Part 2 Analog Electronics Figure P11.8 11,9 The transistor parameters for the ci

Question

Part 2 Analog Electronics Figure P11.8 11,9 The transistor parameters for the cinau in Figure PI 9 are: 0.7 and V Determine Resuch that eby Find AAA, and CMRRa for a enesided outpu al Detemrine the differential- and common-mode input reistances The bias voltages for the diff and V -3V The tansistor curent are 80 the nominal value of Var (on is 06 V and ac, Design the circuit such that the qui are 50 AA and SV for and worz when en IV and J006 V Consider the circuit shown in Figure P parameters are V +3 V. V 0.6 V, and V The output resistance of the current source is R. 4 Mn. a Detemine the 0 points of the transistors w: 0 (h) Determine the differential and common-mode voltage gain for and

Explanation / Answer

Ie in part (a) is contributed due to both the transistor. So Ie= 150 uA

However in part (b) the question asks to consider only the right side Q2 transistor. So by nature of symmetry the Ie will reduce by half Ie = 150 uA / 2 = 75 uA = 0.075 mA

Since the solution chooses to ignore Ib. Therefore Ie = Icq =0.075 mA

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