Intel 8253 - Basic Concepts

• The goal of an ADC is to determine the output digital word corresponding to an
analog input signal.
• The basic internal structures of ADC rely heavily on DACs structures.
• ADCs can be seen as low speed (serial type), medium speed, high-speed and high-
performance.
C
o
d
e
r
Digital Output
+
+
+
_
_
_
Comparator n
Comparator 2
Comparator 1
S/H
Vr1
Vr2
Vrn
A simple ADC parallel topology
VLSI Analog Microelectronics (ESS)
Analog and Mixed Signal Center, TAMU
Basic Concepts