The book "Switched-Current Signal Processing and A/D Conversion Circuits: Design and Implementation" offers a comprehensive analysis and practical guidance for the design and implementation of switched-current circuits, particularly in the fields of signal processing and data conversion. It addresses both theoretical concepts and practical applications, supported by simulation results at both high and circuit levels, as well as measurement data from the author's implementations. The structured presentation of design examples allows readers to follow the entire design process from the system level through circuit simulation to layout and measurement. This work serves not only as a valuable reference for researchers and circuit designers working on integrated mixed-signal system solutions and low-voltage analog CMOS development but also provides a quick overview of developments in switched-current technology.