1. define common mode and difference mode gain, and cmrr. how does one determine these quantities via in-circuit measurements? 2. review the use and setup of an instrumentation amplifier, op amp offset voltage nulling, a first order passive hp filter and a first order active lp filter. explain why an instrumentation amplifier is designed with two stages (i. e., what does each stage do? ) and also the purpose of offset nulling in an op amp. 3. design circuit blocks as follows using common resistors and capacitors (i. e., 10 pf caps, 10 k ohm resistors, etc.): passive hp filter: break frequency of about .5 hz (~3 radians/sec) active lp filter: break frequency of about 100 hz (~630 radians/sec) instrumentation amplifier with input stage amplification of > 50 and difference stage amplification of greater than > 20.