资料介绍
Comparators are used for many things, but many peo-
ple want to build analog-to-digital converters using a
comparator. Comparators are one basic building block
of all ADC architectures. A PICmicro
®
microcontroller
with internal comparators can become an ADC with the
application of some software and a minimum of exter-
nal hardware. In this application note you will be shown
how to build a Slope ADC. This ADC has been used
with the digital pins on PICmicro microcontrollers for
many years. The addition of a comparator to the circuit
improves the results and reduces the power consump-
tion. AN863
A Comparator Based Slope ADC
Thermistors
Author: Joseph Julicher
Thermistors are devices that change in resistance with
Microchip Technology Inc. changes in temperature. Thermistors are more prop-
erly called RTDs (Resistive Temperature Detectors).
INTRODUCTION An RTD can be made from a variety of substances
depending on the desired oper
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