Summary & Conclusion

Analog (Integrated) Circuit Design

15 Summary & Conclusion

Summary & Conclusion

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By now, you should be familiar with the use of a schematic entry tool (Xschem) and circuit simulator (ngspice). You have learned the basic performance trade-offs, and the large- and small-signal behavior of the MOSFET. You can use the \(g_\mathrm{m}/I_\mathrm{D}\) method to size MOSFETs for class-A operation. You can design simple amplifiers based on OTA structures. In summary, you are well on your way to becoming a skilled analog or mixed-signal circuit designer!

Summary & Conclusion

Further Reading

For interested circuit designers, Chapter 5 of (Dorrer 2025) is recommended as a further read. It explains additional circuits, such as the beta-multiplier reference, an OTA with a telescopic input stage, and a push-pull output stage, designs them with the \(g_\mathrm{m}/I_\mathrm{D}\) methodology, and simulates them in Xschem and with CACE. Hence, the design flow is the same as proposed in this course.

References

Dorrer, Simon. 2025. “An Open-Source Adaptive Event-Based ADC for Bio-Signal Acquisition in 130 Nm CMOS.” https://epub.jku.at/obvulihs/content/titleinfo/12118473?query=dorrer.

References