The book presents a systematic journey of analog signal processing in order of the growing complexity of the circuits. It begins by discussing interfacing circuits, different types of amplifiers, single-time constant networks, and higher order networks for system design applications. The book- Presents designing analog circuits using the current-mode technique in a comprehensive manner. Highlights the importance of using current mode building blocks in designing high-performance analog circuits and systems. Discusses in detail the waveform generation circuits and their applications in communication. Covers higher-order analog filters, mixed-mode filter circuits, and electronically tunable filters. Explains instrumentation amplifiers, summing amplifiers, single-ended amplifiers, and voltage to current-converter in detail. This book discusses the electronic tuning aspects of circuits with the help of solved examples and unsolved exercises. It further presents the non-linear applications using current-mode techniques, signal generation for various communication and instrumentation systems, current-mode analog cells, and tuning of analog cells. Each chapter covers the IC compatibility issue, which provides useful direction for carrying out laboratory exercises on the subject. It will serve as an ideal reference text for senior undergraduate, and graduate students in fields including electrical engineering, electronics, and communications engineering.