The purpose of this Application Note is to familiarize
engineers with PIC16C78X design considerations,
specifically:
• Potential noise problems in mixed signal design
• Features and performance of the new analog/digi-
tal peripherals
• Some common applications for the PIC16C78X
The PIC16C781 and PIC16C782 are the first devices in
a new line of mixed analog/digital microcontrollers from
Microchip. These microcontrollers are a marriage of
our traditional microcontroller architecture with new
mixed signal peripherals that change many of the old
conventions of embedded microcontroller design. Not
only do the new peripherals open up new applications
for the microcontroller, they bring new design concerns
that might be unfamiliar to traditional microcontroller
designers. This Application Note will highlight some of
the common problems associated with mixed signal
design and offer techniques for overcoming these prob-
lems. It will also cover the features and performance of
the new peripherals. Finally, this Application Note cov-
ers some of the common applications that take advan-
tage of the PIC16C78X's unique peripherals. AN823
Analog Design in a Digital World Using Mixed Signal Controllers
IDENTIFYING NOISE SOURCES
Author: Keith Curtis Identifying potential noise sources in a design is the
Microchip Technology Inc. first step in controlling or eliminating noise in a mixed
signal design. Almost any active circuit in a design can
generate noise; however, some circuits are more likely
to become noise gene……
