Posts tagged differential-amplifier

I am using the AD620 as instrumentation amplifier to amplify the body's ECG signal. An ECG is a differential signal (measured with two electrodes) and I want a differential gain of Gd=1000 . The ...

3 answers  ·  posted 23d ago by Carl‭  ·  last activity 19d ago by TonyStewart‭

Hello I don't understand how this differential to single-ended voltage converter can work. What I don't understand is why we place a current mirror(a current mirror copies the current flowing thr...

3 answers  ·  posted 2y ago by MissMulan‭  ·  last activity 1y ago by Circuit fantasist‭

How does the differential to single ended converter work? In order for the circuit to work, Q1 and Q3 must be in the saturation region and depending on the voltage inputs, one of Q2 and Q4 will be...

1 answer  ·  posted 1y ago by MissMulan‭  ·  edited 1y ago by Peter Mortensen‭

A differential amplifier amplifies the difference between the two input voltages but suppresses any voltage common to the two inputs. Based on this scheme the differential amplifier is substrac...

1 answer  ·  posted 2y ago by Pacifist‭  ·  edited 2y ago by Olin Lathrop‭

What benefit has a differential amplifier when measuring the signal from a sensor that is remotely located such as in this example: - Why can't I use an arrangement like this: -

1 answer  ·  posted 3y ago by Andy aka‭  ·  last activity 2y ago by Andy aka‭