Questions tagged [offset]

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What is the difference between input and output offset voltage for an opamp?

Looking at many OpAmp (and InAmp) datasheets, I find the info either confusing or lacking. For example, in one datasheet they just call something Offset Voltage ...
2
votes
2answers
593 views

getting rid of dc offset at input of unity gain difference amplifier

I have a question regarding how to tackle an issue i am facing regarding DC offset at the input of unity gain difference amplifier difference. Following are the details of my circuit : I use a ...
2
votes
0answers
352 views

High voltage DC offset servo

I'm working on a project and I need some assistance. I have an audio tube amplifier output stage that I need to have adjustable operating points while maintaining a DC null at the output. [![enter ...
1
vote
0answers
223 views

Accelerometer - Offset correction

I'm using the MMA8453Q for motion detection. The accelerometer is mounted such a way that when it is stationary, X & Y axes are at 0g & Z-axis is at 1g. My usecase is: A tilt across any axes ...
1
vote
1answer
562 views

Preamplifier before latch stage in comparator circuit

Adding preamplifier based on simple inverter before latch stage can improve performance of comparator by decreasing offset voltage. Can anybody explain me how it works? Best Regards
1
vote
1answer
151 views

ACPL-C79B problem

This is my first post on this forum. I have a problem with an isolation amplifier and i hope there's someone here who can help me out. Let me explain my situation. I use an ACPL-C79B from Avago to ...
0
votes
0answers
45 views

Negatively offset signal on op-amp

I am simulating the use of a tl074 quad op-amp and i have configured one of the op-amps as a non-inverting op-amp, where R1=1 Meg and R2=4 Meg and the supply voltage is 9V. Every time i put a signal ...
0
votes
1answer
55 views

Remove bridge offset before ICF amplifier or at FB pin?

I'm making project where I would like to read from stain gauge sensor. It will use only one 1k ohm (or 350 ohm) strain gauge and 3 dummy resistors to complete bridge (1k or 348 ohm). I'd lik to feed ...
0
votes
2answers
468 views

Adjusting the offset of the output of a UA741CN opamp

I've the following schematic for a UA741CN when there is NO offset: simulate this circuit – Schematic created using CircuitLab Question: Why do we need the diode and the two resistors to ...