Analog Comparator In Avr. Setup and use of the avr analog comparator. Using the in built analog comparator of avr the controller can be used to compare the signal and process the signal as well.
This application note serves as an example on how to set up and use the atmel avr on chip analog comparator. Analog comparator in avr atmega16 atmega32 avr atmega controll. Optionally you can use any of the other adc pins for the negative input but let s focus on the simple solution using ain1.
Avr based atmega16 atmega32 has an on chip analog comparator which compares two input analog voltage signals and gives which is higher in between them.
The following program examples are given in the assembly file avr200 asm. It compares the value between the ain0 positive pin and the ain1 negative pin. The article on ir sensor explains the use of comparator in sensor designing. Comparators form an integral part of circuit designing in majority of the applications.
