Microchip has integrated a dual op amp into its 8-bit PIC microcontrollers.
The PIC16F527 and PIC16F570 microcontrollers are designed with on-chip dual op amp module, 8-bit ADC and two comparators.
Combining signal conditioning and amplification function, the devices implement a new hardware interrupt capability which allows designers to implement more complex functions without adding software overhead.
Source:
http://www.electronicsweekly.com/Articles/2013/04/25/56009/microchip-adds-op-amps-to-pic-microcontrollers.htm
