There are two parts. For each part, determine the mode (saturation “S” or triode “T”), then compute the values of v1 and v2 as shown in the diagram to the right. a. First, use V0 = 6V, K = 0.54mA/V2 , |VT| = 0.7V, I0 = 2.1mA, and R = 2.5kΩ. mode = v1 = v2 = b. Then, use V0 = 10V, K = 0.48mA/V2 , |VT| = 0.6V, I0 = 4.2mA, and R = 4.8kΩ. mode = v1 = v2 =
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There are two parts. For each part, determine the mode (saturation “S” or triode “T”), then compute the values of v1 and v2 as shown in the diagram to the right. a. First, use V0 = 6V, K = 0.54mA/V2 , |VT| = 0.7V, I0 = 2.1mA, and R = 2.5kΩ. mode = v1 = v2 = b. Then, use V0 = 10V, K = 0.48mA/V2 , |VT| = 0.6V, I0 = 4.2mA, and R = 4.8kΩ. mode = v1 = v2 =
![Consider a BJT differential amplifier biased with a Widlar current source, as shown in Figure 4. The transistor parameters are: β = 200, VBE(ON) = 0.7 V (except for Q3 and Q4), VA = ∞ for Q1 and Q2, and VA = 100 V for Q3 and Q4. Reverse saturation current, Is for transistor Q3 and Q4 is given as 1×10−15 A. From analysis, it is determined that I1 = 0.5 mA, la = 400 μA, v1 = v2 = 0 V, VCE2 = 2.7 V and CMRR (dB) = 80 dB Figure 4 a) Calculate the value of resistors R1, R2 and RC. b) Find the amplifier's differential-mode voltage gain (Ad), common-mode voltage gain (ACM) and common-mode output resistance ( Ricm ). [Ricm ≈ (1+β)Rocs where Rocs is the output resistance of the current source ] c) Draw the pnp version for the differential amplifier of Figure 4. Clearly label all resistors and currents.](https://www.doubtrix.com/uploads/editor/6551442834FjRRsYNstK.jpg)
