1 matlab applications by: ramy yousry. 2 outline design/implementation flow analog/mixed-signal...
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MATLAB Applications
By: Ramy Yousry
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Outline
Design/Implementation FlowAnalog/Mixed-Signal Design ChallengesBehavioral Design With SimulinkApplication Examples
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Outline
Design/Implementation FlowAnalog/Mixed-Signal Design ChallengesBehavioral Design With SimulinkApplication Examples
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Design/Implementation Flow
Design flow is a Top-down process:
System → Blocks → Sub-blocks …
Implementation Flow is Bottom-up process:
Transistor → Gate → Block …
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Design/Implementation Flow
Design Flow
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Design/Implementation Flow
Implementation Flow
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Outline
Design/Implementation FlowAnalog/Mixed-Signal Design ChallengesBehavioral Design With SimulinkApplication Examples
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Analog/Mixed-Signal Design Challenges
Increasing complexity Analog/Mixed-Signal products Wireless, Broadband, Audio,
Computer, Peripherals
● Time-to-market pressure Design verification occurs too
late High risk of design failure and
time-to-market delays
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Design Flow Problem
Spice-like tools use for design and simulations Slow to develop with Slow too simulate Poor choice for high-
level architectural decisions and trade-offs
Leading to: Design flaws detected
late Design failure risk too
high
Component Specifications
Circuit and Physical Tools
A/M-S Hardware
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MATLAB
High level interpreted languageMath, linear algebraGraphics, GUI’sProgrammingThe standard for signal processingMost text books include MATLAB codeModularity
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Toolboxes
Filter designCommunicationsControl System DesignSignal ProcessingStatisticsOptimization
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MATLAB and SPICE Features
FeaturesSPICEMATLABType of Circuit For
Analysissmall to very large
circuitssmall circuits
Frequency Response
YesYes
Inclusion of Device
Model in Software
Package
YesNo
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Continue
Determination and
plot of poles and
Zeros
NoYes
Bulk Semiconductor
Characteristics
NoYes
pn junction
characteristics -
excluding I-v
characteristics
NoYes
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Outline
Design/Implementation FlowAnalog/Mixed-Signal Design ChallengesBehavioral Design With SimulinkApplication Examples
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Simulink
Perform high-level behavioral simulation easily an order of magnitude faster than Spice
Make important architectural decisions and trade-offs. Try out more options
Reduce design risk and time-to-market
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Analog/Mixed-Signal Design Requirements
Model different levelsDocumentationRe-use of designAnalog and digital HardwareSimulation speedAccuracy in both time and frequency
domainsInterface to real-world signals
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Simulink Solution
Hierarchical block diagram design and simulation tool
Addresses: Discrete time Continuous time State flow
Visualize signals Both time & frequency
domains Integrated with MATLAB
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Simulink for Analog/Mixed-Signal
Model continuous time Laplace transforms Integrators and summers Passive RLC circuits Active circuits
Model discrete time Z-transforms Delays, gains, summers
Feedback control loops, VCO’s, PLL’s, Phase detectors
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Outline
Design/Implementation FlowAnalog/Mixed-Signal Design ChallengesBehavioral Design With SimulinkApplication Examples
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Application Examples
Device ModelingContinuous-time FiltersDiscrete-time FiltersComplete Communication System
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Device Modeling
Transistor Modeling
Op-Amp Modeling
Fabry-Perrot resonator
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Continuous-time Filters
Passive Filters
Active Filters
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Discrete-time Filters
Digital Filters
Switched-Capacitor Filters
Passive SWITCAP Filters (PasSim)
C1 C2
Ø1 Ø2
C1
C2
+
-
Ø1 Ø2
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Communication System
Analog-to-Digital Converter
Modulator
Channel
Demodulator
ADC
fc fc
LPF
fclk
Channel
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The END