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VSD Intern – 10-bit DAC design using eSim and Sky130

Design 10-bit DAC from scratch using eSim - open source EDA tool for circuit design by FOSSEE IIT Bombay and Sky130 PDKs
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723 students
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Platform: Udemy
Video: 1h 46m
Language: English
Next start: On Demand

Table of contents


Most of the signals around us, in the world we live in are not digital in nature, rather they are analog. The digital systems can understand only digital signals, not analog. Hence, it becomes important to interface the digital systems we the external analog world. The analog input signals are to be converted to digital signals using Analog to Digital Converters at the input end of the digital system. After the processing by the system, the digital signals are to be converted back into analog signals using Digital to Analog Converters.
A n-bit Digital to Analog Converter (DAC) takes a n-bit digital word and converts it into a proportional analog voltage with respect to the reference voltage. The potentiometric DAC uses the concept of Voltage Divider. In an N-bit DAC, the analog voltage range, i.e. the Vref (here 3.3 V) is equally divided into 2^N voltage values. This is achieved by a series on 2^N equal resistors and taps are provided across each R. The combination of switches to tap the values is designed using the N-bit digital word as input.
This circuit was designed using eSim
eSim (previously known as Oscad / FreeEDA) is a free/libre and opensource EDA tool for circuit design, simulation, analysis and PCB design. It is an integrated tool built using free/libre and opensource software such as KiCad, Ngspice and GHDL. eSim is released under GPL.
eSim offers similar capabilities and ease of use as any equivalent proprietary software for schematic creation, simulation and PCB design, without having to pay a huge amount of money to procure licenses. Hence it can be an affordable alternative to educational institutions and SMEs. It can serve as an alternative to commercially available/licensed software tools like OrCAD, Xpedition and HSPICE.

You will learn

✓ eSim tool usage and installation
✓ DAC IP design – hierarchical approach
✓ Basic circuit design using eSim and Sky130


• VSD – Circuit design and SPICE simulations
• VSD – Custom layout

This course is for

• Beginner VLSI students curious to know about eSim and circuit design
• Expert VLSI Physical designers curious to know about custom IP design using real foundry PDKs like Sky130
Digital and Sign-off expert at VLSI System Design(VSD)
I am a final year student of B.Tech in Electronics and Communication Engineering from National Institute of Technology Karnataka. I have a good understanding of CMOS technology, Digital electronics, RTL design and Physical design. I have worked on digital and mixed signal design projects. I have experience of working on 180nm and sky130nm technology.
Platform: Udemy
Video: 1h 46m
Language: English
Next start: On Demand

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