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Q&A

# Posts tagged differential-amplifier

### Synonyms: differential-amplifiersdiff-ampdiff-ampsdiffampdiffampsdifferential-ampdifferential-amps

Subtag of amplifier

A differential amplifier is an amplifier designed to amplify the difference between two signals (usually voltages).
7 posts
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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 3y ago by Pacifist‭  ·  edited 2mo ago by Lorenzo Donati‭

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Since am interested in how a delta sigma modulator works, I need to know what is the difference between differential amplifier and differentiator if there is a difference of course.

3 answers  ·  posted 3y ago by Pacifist‭  ·  edited 2mo ago by Lorenzo Donati‭

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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 7mo ago by Carl‭  ·  last activity 7mo ago by TonyStewart‭

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posted 1y ago by Circuit fantasist‭  ·  edited 1y ago by Circuit fantasist‭

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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 2y ago by Circuit fantasist‭

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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 2y ago by MissMulan‭  ·  edited 2y ago by Peter Mortensen‭

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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 3y ago by Andy aka‭