Mixed Electronic Designs
Analog Designs have to handle Linear Signals, Like 2.03 V and 35.3812
mA. Waveforms of all shapes from Straight Line DC Levels to the
Jittery and Multi-Frequency Audio Waveforms.
Digital Designs manage Digital Signals, Like 0 and 5V Logic
levels. All families of digital Logic, have some Threshold Limits and
Voltage windows to determine Data Voltage or Current levels over
Noise; this (Analog) comparator like action evaluates a High or Low
Logic state. There are only two states, one is
Low and the Other is High. 0 and 1 Respectively. The Third State in the
word like Tristate, is a floating high impedance for Bus sharing
between
devices.
I would like to understand Mixed Circuit Designs as any circuit made of
Valves,
Discretes or Chips; in which both Analog signals and Digital Signals
are Used. That would make an Analog Mux a Mixed Circuit, so also a PLL
and a VCO.
Mixed Interface
and Signal Circuits
Mixed Signal IC or ASIC are chips that are mainly Digital on the Core
but have peripheral I/O within the chip to interface with the
real world outside, over Analog Signals. Sensors and Actuators use
signals in the analog language. The CPU with its Math Power, speaks
Digital Words, its behavior thus can be patterned by a Software Program.
RF Microwave and Communication Chips; Power Electronic PWM Integrated
Circuits are Specialized Niche Mixed Sub-Domains.
Therefore any Student of Robotics, Multimedia and
Instrumentation, must be good at these Mixed Designs and a master of C Programming.
08:01 18-Jul-09
Anantha Narayan
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