Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Nominal Crystal Frequency of Wide Variations in Oscillation of Circuit | 055 041, Assignments of Microelectronic Circuits

Material Type: Assignment; Professor: Kruger; Class: 055 - Electronic Circuits; Subject: Electrical and Computer Engineering; University: University of Iowa; Term: Fall 2006;

Typology: Assignments

Pre 2010

Uploaded on 03/19/2009

koofers-user-1is
koofers-user-1is 🇺🇸

10 documents

1 / 1

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
055:041 Electronic Circuits Fall 2006
Homework 9 Solutions

Partial preview of the text

Download Nominal Crystal Frequency of Wide Variations in Oscillation of Circuit | 055 041 and more Assignments Microelectronic Circuits in PDF only on Docsity!

055:041 Electronic Circuits Fall 2006

Homework 9 Solutions

055:041 Electronic Circuits Fall 2006 Homework 9 Solutions M1 Ris= ——7y_ 21, inh{ v2 SSI Vr 9.47 (a) For identical diodes in P9.48, KCL and Eq. (3.32) give i= I,e"Vr— 1)—1{e""r— 1) = Ler eM) = 21 sinh = Lew -e7) 21,sinh{ y-) 6) = . Since sinh(x) is an odd function, 21, sinh| <<} — sinh{ —+ Vr, Mr (©) For Vi = 0, Rys oes =1.25x107Q . Rys(0.25) = s 1,13x1209 O. Rys(0.50) = 1.03x1205 2, Rps(0.55) = 1.53x1204Q. PROB7.5-8 COUT 1 0 2894P *CIN 2 0 32.2P CIN 2 0 35.4P fe PRe 2 3:5P R34 15K CS 2 3 0,0235P L41 137 RX1 10 1000MEG RX2 20 1000MEG IIN02AC1 -PLOT AC VP(1) -AC LIN 100 85K 95K -END 9.58 The SPICE code is 0.0235 pF : 15k 4 137H 3.5 pF 32.2 pF 2894 pF SPICE output showed 180° phase shift at frequencies of 88.715 kHz and 88.985 KHz for the first Cin value. For the second, the frequencies were virtually the same. Oscillations are near the 90 kHz nominal crystal frequency in spite of wide variations in the other component values.