D. 
Analog Circuit Design: Designing Waveform-Processing Circuits [PDF ebook] 

The fourth volume in the set, Analog Circuit Design: Designing Waveform-Processing Circuits, builds on the previous 3 volumes and presents a variety of analog non-amplifier circuits, including voltage references, current sources, filters, hysteresis switches and oscilloscope trigger and sweep circuitry, function generation, absolute-value circuits, and peak detectors. Digitizing (ADCs and DACs) and sampling (including some switched-capacitor) circuits are explained, with theory required for design. Sampling theory is developed from both a frequency and time-domain viewpoint, with emphasis upon application to design.