This textbook focuses on the materials, devices, and applications of microelectronics technology. Microelectronics, branch of electronic technology devoted to the design and development of extremely small electronic devices that consume very little electric power.
I have read sedra-smith,gray-hurst and now razavi.I found the last one by far the best book to understand microelectronics. Although it hasn't the reputation of the sedra-smith book,It has more practical problems and gives a good intuition into how microelectronics circuits work.