By Alex Doboli, Edward H. Currie
This textbook is written for junior/senior undergraduate and first-year graduate scholars within the electric and desktop engineering departments. utilizing PSoC mixed-signal array layout, the authors outline the features of embedded layout, embedded mixed-signal architectures, and top-down layout. Optimized implementations of those designs are integrated to demonstrate the idea. workouts are supplied on the finish of every bankruptcy for perform. subject matters coated comprise the and software program used to enforce analog and electronic processing loops, a number of clear out constructions, amplifiers and different signal-conditioning circuits, analog to electronic converters, pulse-width modulators, timers, and information constructions for dealing with peripheral units. the sensible workouts inside the better half laboratory guide, which used to be co-authored via Cypress employees purposes Engineer Dave Van Ess, also are in response to PSoC. PSoC's built-in microcontroller, hugely configurable analog/digital peripherals, and a whole set of improvement instruments make it an excellent studying device for constructing mixed-signal embedded layout skills.
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Additional info for Introduction to Mixed-Signal, Embedded Design
More details about the functioning and characteristics of electric motors can be found in [27, 34]. 15(b) illustrates the electric circuit for operating and controlling the fan motor. This circuit includes a pulse width modulator circuit, and a power FET . PWM circuits produce waveforms with a programmable duty cycle, α. 7. The power FET delivers the high currents needed for the motor operation. The control algorithm senses the temperature and the tachometer RPM readings and adjusts the PWM’s duty cycle.
Design tradeoﬀ analysis is utilized to identify the design requirements of the submodules and deﬁne their design. 5. Analog circuit design is the process of implementing the analog and mixed-signal circuits of a design. Popular analog circuits include operational ampliﬁers, transconductor ampliﬁers, comparator circuits, analog multiplexers, integrator circuits, and sample-and-hold circuits and many more. Analog circuits are implemented as either continuous-time circuits or as switched capacitor circuits.
The control algorithm senses the temperature and the tachometer RPM readings and adjusts the PWM’s duty cycle. 15 . 15: DC motor model and operation . 16) relates the PWM duty cycle α to the average shaft speed ωaverage of the DC motor. • Tachometer: The tachometer measures the rotational speed ω of the fan, that is the shaft speed, and generates input signals that are used for computing the fan speed. 7 for diﬀerent temperature ranges. 16). • LCD: The LCD displays the values of the temperature measured by the temperature sensor and the fan rotational speed ω measured by the tachometer.