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suppose that the researcher from the previous problem repeated the study of married couples initials using twice as
870 in this problem we investigate whether as an alternative to cascoding we can simply increase the channel length l
869 the cascode transistor can be thought of as providing a shield for the input transistor from the voltage variations
d 868 design the circuit of fig 832 to provide an output current of 100 mua use vdd 33 v and assume the pmos
design the cmos cascode amplifier in fig 833 for the following specifications gm1 1 mav and av -280 vv assume that
866 the cascode amplifier of fig 833 is operated at a current of 02 ma with all devices operating at vov 020 vall
for a cascode current source such as that in fig 832 show that if the two transistors are identical the current i
for the constant-current source circuit shown in fig p860 find the collector current i and the output resistance the
859 as mentioned in the text the c b amplifier functions as a current buffer that is when fed with a current signal it
858 show that for the cb amplifiergenerate a table for rout as a multiple of ro versus re as a multiple of re with
857 what value of load resistance rl causes the input resistance of the cb amplifier to be approximately double the
856 for the cb amplifier use eq 863 to explore the variation of the input resistance rin with the load resistance rl
855 in the common-gate amplifier circuit of fig p855 q2and q3are matched k1nwln k1 pwlp 4 mav2 and all transistors
d 854 figure p854 shows a current source realized using a current mirror with two matched transistors q1and q2 two
d 853 it is required to design the current source in fig p853 to deliver a current of 02 ma with an output resistance
851 a cg amplifier operating with gm 2 mav and ro 20 komegais fed with a signal source having rs 1 komega and is
850 it is required to design the cmos amplifier of fig 816a utilizing a 018-mum process for which k1n 387 muav2 k1p 86
849 transistor q1in the circuit of fig p849 is operating as a ce amplifier with an active load provided by transistor 2
848 the mosfets in the circuit of fig p848 are matchedhavingk1nwl1 k1pwl2 1 mav2 and vt 05 v the resistance r
847 consider the circuit shown in fig 816a using a 33-v supply and transistors for which vt 08 v and l 1 mum for q1
846 the power supply of the cmos amplifier analyzed in example 84 is increased to 5 v what will the extent of the
845 consider the cmos amplifier analyzed in example 84 if vi consists of a dc bias component on which is superimposed a
d 844 consider the cmos amplifier of fig 816a when fabricated with a process for which k1n 4k1p 400 muav2 vt 05 v
843 the nmos transistor in the circuit of fig p843 has vt 05 v k1nwl 2 mav2 and va 20 va neglecting the dc current in
842 figure p842 shows an ic mos amplifier formed by cascading two common-source stages assuming that van vap and