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One integrated circuit design calls for diffusing boron into very high purity silicon at an elevated temperature. It is necessary that at a distance 0.2 ?m from the surface of the silicon wafer, the room-temperature electrical conductivity be 1.2 x 103 (ohm-m)-1. The concentration of B at the surface of the Si is maintained at a constant level of 1.0 x 1025 m-3; furthermore, it is assumed that the concentration of B in the original Si material is negligible, and that at room temperature the boron atoms are saturated. Specify the temperature at which this diffusion heat treatment is to take place if the treatment time is to be one hour. The diffusion coefficient for the diffusion of B in Si is a function of temperature as
A point charge of 500π [nC] is located at the origin, an infinite uniform line charge with density of 18π[nC/m] lies along the z axis, and a uniform surface charge density of 2 [nC/m2] lies on all the z = 0 plane.
A 3-bit " comparator" circuit receives two 3-bit numbers, P = P2P1P0 and Q=Q2Q1Q0. Design a minimal sum-of-products circuit that produces a 1 output if and only if P
Digital Communications uses a few specific modulation formats. Research at least 5 different applications or standards and explain what modulation format is used and what is the bandwidth over which you need to equalize the channel? Determine the ..
how big will be inductance of coil if it is connected in series with resistor 30 omega on AC circuit with input voltage with RMS value U1=(220+2*1.7) V and frequency 50 Hz if power factor of the circuit is 0.6
Show how to build each of the following single- or multiple-output logic functions using one or more 74X138 or 74X139 binary decoders and NAND gates. (hint: Each realization should be equivalent to a sum of minterms)
Compute the energy of the following signals: 1) x(t) = e^-(a|t|) for a > 0 (Notice the absolute value on t) 2) x(t) = (1 - |t|)rect(t/2) (Notice the absolute value on the first t)
GivenG(A,B,C) =fm (2,3) + d(4,5,6,7) 1. find the Optimum SOP solution 2. What is the minimum number of gate that can be used to implement this function (d represents dont cares).
Design a common source amplifier, to solve a small signal voltage gain of at least Av= Vo/Vi= -10 Rl= 20k ohms, Rd= 200kohms. Assume the q point is chosen at Idq= 1mA, and Vdsq= 10V, Let Vtn= 2V, and lamda= 0.
as was mentioned the one-way bandwidth available to a single operator in the amps system is 12.5 mhz with a channel
The time has come for XelPharm to expand. The board of directors has purchased another warehouse for a second distribution facility. It's located in an industrial area, about eight miles from the company's headquarters.
Write a program to compute the average of an array of N-bit numbers and store the result at $900. The array is store is store at the memory locations starting from $800. N is no larger than 25. Use assembler.
Let p represent the true portion of unauthorized uses of business websites in 2008 that came from inside the company. (a) Calculate a point estimate for p. (b) Set up the null and alternative hypothesis to test whether the value of p differs from ..
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