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本帖最后由 疯狂的木头 于 2022-5-23 04:24 编辑
请问, 拉扎维第三章3.23, 能够算出来Vout_min=2.4V, Vout_max=3V 怎么得来的?
它的小信号最大允许振幅是96.25mV, 那么 2.5V+96.25mV 也达不到3V 啊。除非Mos 关断, 而题目中ID=0.5mA.
In the cascode stage of Fig. 3.59, assume that (W/L)1 = 50/0.5, (W/L)2 = 10/0.5, ID1 = ID2 = 0.5 mA, and RD
= 1 kΩ.
(a) Choose Vb such that M1 is 50 mV away from the triode region.
(b) Calculate the small-signal voltage gain.
(c) Using the value of Vb found in part (a), calculate the maximum output voltage swing. Which
device enters the triode region first as Vout falls?
(d) Calculate the swing at node X for the maximum output swing obtained above.
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