books.google.com - Current Sources and Voltage References provides fixed, well-regulated levels of current or voltage within a circuit. These are two of the most important “building blocks “ of analog circuits, and are typically used in creating most analog IC designs. Part 1 shows the reader how current sources are...http://books.google.com/books/about/Current_Sources_and_Voltage_References.html?id=03JmxpE39N4C&utm_source=gb-gplus-shareCurrent Sources and Voltage References