By using op amps powered from a bipolar supply and ground-referencing the sensor signals, the op amp’s output will be at zero ...

Combing multiple channels of audio is a perfect use for this circuit. The traditional inverting op-amp summer configuration exploits the feature of a low impedance node (virtual ground ...

Figure 1. These three circuits let you measure quiescent current, I Q. To show you an example of these circuits, we tested the OPA369 op amp. The maximum quiescent current for this part is 1-µA per ...