The ever-increasing complexity and speed of digital circuits has considerably modified the architecture of integrated signal processing systems, resulting in the analogue parts of the system being pushed towards the boundaries of the signal processing chain. The specification requirements of these analogue interface circuits are becoming very strict, in order to fully benefit from the speed performance and the high dynamic range offered by digital circuits. This book analyzes the analogue interfaces of a digital signal processing chain, and presents techniques to obtain maximum performance for various technologies and applications. The book serves as a general introduction and as a reference work in the fields of low-distortion analogue circuits and over-sampled data converters. It can also be used as the text for advanced courses covering these topics.