1. MATLAB Applications
By: Ramy Yousry

2. Outline Design/Implementation Flow
Analog/Mixed-Signal Design Challenges
Behavioral Design With Simulink
Application Examples

3. Outline Design/Implementation Flow
Analog/Mixed-Signal Design Challenges
Behavioral Design With Simulink
Application Examples

4. Design/Implementation Flow
Design flow is a Top-down process:
System → Blocks → Sub-blocks …
Implementation Flow is Bottom-up process:
Transistor → Gate → Block …

5. Design/Implementation Flow
Design Flow

6. Design/Implementation Flow

7. Outline Design/Implementation Flow
Analog/Mixed-Signal Design Challenges
Behavioral Design With Simulink
Application Examples

8. 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

9. 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

10. MATLAB High level interpreted language Math, linear algebra
Graphics, GUI’s
Programming
The standard for signal processing
Most text books include MATLAB code
Modularity

11. Toolboxes Filter design Communications Control System Design
Signal Processing
Statistics
Optimization

12. MATLAB and SPICE Features
small circuits
small to very large circuits
Type of Circuit For Analysis
Yes
Frequency Response No
Inclusion of Device
Model in Software
Package

13. Continue Yes No Determination and plot of poles and Zeros
Bulk Semiconductor
Characteristics
pn junction
characteristics -
excluding I-v
characteristics

14. Outline Design/Implementation Flow
Analog/Mixed-Signal Design Challenges
Behavioral Design With Simulink
Application Examples

15. 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

16. Analog/Mixed-Signal Design Requirements
Model different levels
Documentation
Re-use of design
Analog and digital Hardware
Simulation speed
Accuracy in both time and frequency domains
Interface to real-world signals

17. 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

18. 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

19. Outline Design/Implementation Flow
Analog/Mixed-Signal Design Challenges
Behavioral Design With Simulink
Application Examples

20. Application Examples Device Modeling Continuous-time Filters
Discrete-time Filters
Complete Communication System

21. Device Modeling Transistor Modeling Op-Amp Modeling
Fabry-Perrot resonator

22. Continuous-time Filters
Passive Filters
Active Filters

23. Discrete-time FiltersØ1 Ø2 + -
Digital Filters
Switched-Capacitor Filters
Passive SWITCAP Filters (PasSim)

24. Communication System Analog-to-Digital Converter Modulator Channel
Demodulator
ADC fc
LPF
fclk
Channel

25. The END