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Results tagged with operational-amplifier
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user 129451
Questions relating to the construction and applications of operational amplifiers, which are DC-coupled, high-gain electronic voltage amplifiers with a differential input and, usually, a single-ended output.
2
votes
Choosing the right opamp for a charge sensitive pre-amplifier circuit?
You can use op_amp with High Input Impedance,low bias current, low noise, low bias current and wide bandwidth like OPA656.
Please see the below paper for more dtails.Hope this will help you.
https://w …
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1
vote
Accepted
Calculating Vs in an amplifier circuit as a function of Ve
Please see the solution below using KVL and KCL.
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2
votes
Some basic non-inverting op-amp circuit questions
The meaning of the line from 0V to Vout, represents the the polarity of the
output voltage. Please see the image below.The arrow is anaother way of representing + and - in
circuit analysis.Arrow head …
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0
votes
How to get output signal from TLC2652ACP
The TLC2652 is an older chopper amplifier. Output is connected between pin no 6 and GND.The datasheet in the Theory of Operation section describes the function of CXA and CXB and indeed shows the lowe …
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1
vote
Basic non-inverting op-amp circuit is not working
The output capacitor is the culprit. The opamp don't have that much capacitive load drive capability. This capacitor reduces the PM of the system. Please see the simulation result below. Could you ple …
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3
votes
Voltage Follower Circuit Output Issue
You are violating the common mode range. If you want to use this opamp, then you need to use dual supply.
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0
votes
1
answer
229
views
Comparator with Hysteresis [closed]
The reference of the comparator is placed in that range, in particular, Vh=1.282, Vl=1.182 meaning that the hysteresis is 100mV.
But I am getting an output which is always High.
May I know why is i …
- 2,593
1
vote
How do I optimize my op-amp "guard ring"?
Remember why we are using a guard at all: Setting the guard on the same potential as the signal to be guarded reduces the potential difference between the guard and the signal to be guarded to zero an …
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0
votes
0
answers
64
views
Bootstrapping low voltage opamp
I was analyzing the below circuit. In this circuit an opamp supply voltage (V+ − V) = 16V is powered by using a 45V supply and a -5V supply.
I understand the circuit to some extent.
Here U1 is supply …
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0
votes
Calculate the transfer function of an OPAMP circuit
I did not try to find the TF. Run a basic AC analysis to check is there any gain peaking or not. This is just a basic check for stability. For exact picture you need to find the PM of the circuit.
I d …
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1
vote
Trying to Build Basic IEPE Circuit: Facing issue with the Op-amp
The output signal coming from your microphone will be a bipolar signal.A typical representation is given below.
In your circuit the opamp is working with a single supply.So you need to provide a lev …
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0
votes
How to shift/offset a AC signal
Below is a simple level shifting circuit given for your reference.You can fine tune it as per your needs.
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1
vote
What happens if the power supply of an op-amp is connected to ground?
You can apply super position theorem to solve this problem.Since your opamp is used working with a single supply V2 is used for providing an offset.To avoid common mode range violation.
Green : INP …
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2
votes
2
answers
212
views
Opamp Compensation For Input Capacitance
I am going through the datasheet of LM7171 for one of my applications. Please see the below circuit.
May I know how they arrived at the equation for CF?
Is this equation is valid for non-inverting co …
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2
votes
2
answers
3k
views
Concept of Bootstrapping in Electronics
I was trying to study about bootstrapping in electronic circuits.
When I checked in Internet Wiki says it is a method to improve the input impedance of an amplifier.
In the power electronics context, …
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