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The heart of the ADC you will build in the next two labs is the DAC you built and designed in the previous lab. The DAC is used to generate a test voltage, $V_r$, that is compared against the voltage, $V$, you wish to convert into a 3 bit digit. The reference voltage $V$ will be generated by a potentiometer. In this lab you will use diodes and operational amplifiers to build circuits that compare the two voltages, buffer your R2R ladder network from this new circuitry, and then clamp the output voltages generated by your circuit to lie within the 0-5 volt range that can be read by the MicroStamp11.


Michael Lemmon 2009-02-01