Analog Layout Design
ChipXpert : Analog VLSI Design Overview
Introduction: What is Analog VLSI ?
 Analog is real-world continuous signals like temperature, audio, voltage, etc.
 Bridges the physical world and digital systems
→ Sensors, microphones, and antennas generate analog signals that must be processed
before digital conversion.
 Critical in low-power and high-precision applications
→ Medical devices, IoT, RF front-ends, audio circuits, power management.
 VLSI It refers to integrating thousands to millions of transistors on a single silicon chip.
What Does Analog IC Design Involve?
 Amplifiers
Op-amps (Operational Amplifiers)
Transimpedance Amplifier
 Filters
Active and passive filters to allow or block frequency components
 Voltage and Current References
Bandgap reference, current mirrors, biasing circuits
 Oscillators & Phase-Locked Loops (PLLs)
Generate stable clocks or RF carriers
 Data Converters
Analog-to-Digital Converters (ADC)
Digital-to-Analog Converters (DAC)
Technology behind it is
CMOS
CMOS Technology
15
Source: techspot.com
The VLSI Design Ecosystem
Chip Design
CAD/EDA
Fab/Foundry
Course Work
• In this course we will learn following things:
• Introduction Analog Design and simulation
• CMOS Device, Passive Devices and Layout Rules
• Floor Planning/Placement Techniques
• Parasitic aware layout & layout dependent effects
• Guards Rings, Shielding, and Isolation
• Analog IP Block layout (Op-Amp, VCO, LDO)
• Post layout simulation Extraction and Simulation
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