Consider two diode-connected nMOSFETs having, respectively, Vt 1 5 1.0 V and k1 5 100 A/V2 , and Vt 2 5 2.0 V and k2 5 400 A/V2 . Moreover, assume 5 0 and 5 0 for both devices. (a) Show that if the...

Consider two diode-connected nMOSFETs having, respectively, Vt 1 5 1.0 V and k1 5 100 A/V2 , and Vt 2 5 2.0 V and k2 5 400 A/V2 . Moreover, assume 5 0 and 5 0 for both devices. (a) Show that if the two diodes are connected in series, they still behave like a diode-connected MOSFET. What are the values of Vt and k for this equivalent device? Hint: derive the i-v characteristic of the series combination, exploiting the fact that i 5 iD1 5 iD2, and v 5 vDS1 1 vDS2. (b) If the two diodes are connected in parallel, will the resulting structure still exhibit diode behavior? Sketch and label its i-v characteristic, calculate it at a few signifi cant points, and discuss.