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An NMOS transistor fabricated in a certain process is found to have an intrinsic gain of 50 V/V when operated at an ID of 100 µA.
Consider an NMOS transistor fabricated in a 0.18-µm technology for which k1 n = 400 µA/V2 and V1 A = 5 V/µm.
Sketch the circuit for a current-source-loaded CS amplifier that uses a PMOS transistor for the amplifying device.
An NMO Stransistor operated with an overdrive voltage of 0.25 V is required to have a gm equal to that of an npn transistor operated.
Find the values of gm and A0 obtained at ID =25 µA, 250 µA, and 2.5 mA.
It was fabricated in a 0.18-µm CMOS process for which µnCox = 400 µA/V2 and V_ A = 5 V/µm.
What must W be for the NMOS transistor to operate at ID = 100 µA? Also, find the values of gm and ro.
Using a CMOS technology for which k1n = 200 µA/V2 and V1 A = 20 V/µm, design a current-source-loaded CS amplifier for operation at I = 50 µA .
The two transistors have L =0.5 µmand are to be operated at ID =100 µAand |VOV |= 0.3 V. Find the required values of VG, (W/L)1, (W/L)2, and Av .
ssuming that for this process technology the Early voltage V1A =5 V/µm, find the output resistance of the current source.
For the fabrication-process technology utilized, µnCox = 400 µA/V2, V? A = 10 V/µm, and Vt = 0.5 V.
ind the device W/L ratios and the value of the resistor that sets the value of IREF so that a nominally 80-µA output current is obtained.
If IREF is 20 µA and the transistors are operating at an overdrive voltage of 0.2 V, what IO results? What is the minimum allowable value of VO .
Find the output resistance of the current source Q2: and the output resistance of the current sink Q5.
If ß of the pnp transistor is 50, what is the current gain (or transfer ratio) IO /IREF for the case of identical transistors, neglecting the Early effect?
Why does pore coalescence in a glassy material cause an increase in porosity and negative densification?
A PMOS current mirror consists of three PMOS transistors, one diode connected and two used as current outputs.
Neglecting the effect of finite ß, find the change in IO, both as an absolute value and as a percentage, corresponding to VO changing from 1 V to 10 V.
What is the maximum allowed value of VO while the current source continues to operate properly?
Find the voltages at all nodes and the currents through all branches in the circuit of Figure.
Design a multiple-mirror circuit using power supplies of± 5 Vto create source currents of 0.2 mA, 0.4 mA, and 0.8 mA and sink currents of 0.5 mA, 1 mA, and 2 mA
With Y connected to ground, show that a virtual ground appears at X. Now, if X is connected to a +5-V supply through a 10-kO resistor, what current flows.
Find the small-signal resistance of the diode-connected transistor Q2: in terms of gm2, and hence the total resistance between the drain of Q1: and ground.
Replace the BJTs with their hybrid- p models and find expressions for Rin , io/ii , and Ro, where io is the output short-circuit current.
The open-circuit voltage gain from base to collector is the maximum possible, consistent with the requirement that the collector voltage never fall.