Many sensors have a small analog signal that rides on top of a larger dc pedestal. For these circuits (Fig. 1), the signal must be ac coupled and amplified before it’s digitized. The feedback of an ...

Driving an analog-to-digital converter (ADC) for optimum mixed-signal performance is a design challenge. Figure 1 shows a standard ADC driver circuit. During ADC acquisition time, the sampling ...

Pulse-skipping mode (PSM) is widely used as a method for improving the efficiency at light load. For this example, we will use the TPS65290 which has adopted PSM. A simplified block diagram and an ...