Reference no: EM131089987
Design an EKG amplifier interface to a 9S12 (Figure 12.64). The biopotential is a ±5 mV signal measured between the left and right arms using silver-silver chloride electrodes. A third electrode is placed on the right leg and is used as a reference. To make the entire system battery-operated, low-power, rail-to-rail TLC2274 op amps will be used, each powered with +5 and ground. Notice that the analog system uses the 2.5 V signal as its reference.
Figure 12.64
a) Design the preamplifier that has the following characteristics: differential input, gain = 10, good CMRR, high Zin, low Zout, bandwidth > 200 Hz. Show resistor values, but not pin numbers.
b) Show the amplifier stage that has the following characteristics: single input, gain = 250, high Zin, low Zout, bandwidth > 200 Hz. Show resistor values, but not pin numbers.
c) The signals of interest are 0.1 to 100 Hz. There is unwanted noise at 120, 240, 360, and 480 Hz. Discuss the trade-offs between the following two options:
c1) Add an active analog low-pass filter with a 100 Hz cutoff, and sample at 200 Hz.
c2) Sample at 1920 Hz and add a digital 120, 240, 360, 480 Hz reject filter.
Which approach would you take and why? Under what conditions would the other choice be better?
|
What is its waac
: The after-tax cost of dept is 6.00%, the cost of preferred is 7.50%, and the cost of common using retained earnings is 12.75%. The firm will not be issuing any new stock. What is its WAAC?
|
|
Higher after tax income the investor
: The investor will invest his after tax dividend incom in ABC for five years. How much higher after tax income the investor will get in five years under the capital gains option 2 than under the dividend income option 1. (difference of option 2 inc..
|
|
Why does this state practice civil law
: If DNA plus corroborating evidence is what helps put a person on death row, should they be executed if they are found sane and have been found guilty of a capital crime?
|
|
Review the goal you wanted to achieve
: Explain all of the above questions as thoroughly (at least one FULL page total) as possible. Answers to the questions must be in Times New Roman 12 point font, , standard one inch margins, typed, double spaced, spell-checked, grammar-checked, and ..
|
|
Under what conditions would the other choice be better
: Which approach would you take and why? Under what conditions would the other choice be better?
|
|
Identify concerns about beta and the capm
: 1. Specify how risk aversion influences required rates of return. 2. Identify concerns about beta and the CAPM.
|
|
Tax differential theory of dividend policy
: The tax differential theory of dividend policy typically requires that dividend income be taxed at a higher rate than capital gains income. So if the preferential treatment of capital gains that existed before 2003 is eliminated in a tax reform ac..
|
|
Designed to get someone to agree with the author
: o Academic arguments are designed to get someone to agree with the author, who may use pathos (emotion), logos (logic and facts) and ethos (authority and expertise) to persuade.
|
|
What sampling rate would you choose explain your answer
: What sampling rate would you choose? Explain your answer
|