This application note introduces a series of practical circuits for measurement and control problems. Including power conversion, transducer signal conditioning, amplifiers and signal generators.
Application Note 61 presents a collection of circuits designed between June 1991 and July 1994 to address specific customer requests or derivative efforts. The document covers various categories such as power conversion, transducer signal conditioning, amplifiers, and signal generators.
The note details several specific designs, including a clock-synchronized switching regulator that forces noise coherence with system clocks, a high-power 1.5V to 5V converter capable of 200mA output, and a low-power alternative delivering 150mA with improved efficiency at lower currents.
It eliminates housekeeping currents associated with fixed-frequency designs and synchronizes loop oscillation frequency to the system's clock.
The circuit requires a start-up sequence because its clock is powered from its output, utilizing an LT1073 regulator to bootstrap the supply.