If you’ve ever wondered why an op amp has the little plus and minus symbols on it, its because at the heart of it, the device is a differential amplifier. The problem is that — ideally, at least — it ...

Operational amplifiers are fundamental because they can perform any amplifier function. The op-amp name stems from the days when analog computers reigned supreme and feedback amplifiers performed ...

Fig 1. Here is the symbol for an ideal differential amplifier. It has two inputs and a single output. Fig 2. A real amplifier must have power connections. Those connections are inputs. You really have ...

Telcom, LDMOS, automotive and many other applications require the measurement of current flow at high voltages (high-side current). Often, a circuit operating at 5 V must monitor currents at 48 V.