Questions tagged [single-supply-op-amp]
For questions about op amps that are marketed as capable of "single supply" operation. While all op amps can be operated with a single supply, op amps that are marketed as capable of "single supply" operation typically include an input common mode range and output voltage swing down to the negative supply voltage. Always use with the "operational-amplifier" tag.
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Modifying TI schematic to learn more about amplifiers
Let me start off by saying that I'm a complete beginner. I've watched some videos on amplifiers and read about them but it's hard for me to analyze circuits that don't match exactly to the examples I ...
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How to bias an input AC signal for active high-pass filter?
I have been trying to design a 2-way active crossover, with low-pass and high-pass channels.
So far I got the desired frequency response but the transient response is not up to mark.
Here is the ...
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Distortion in a negative channel of the differential amplifier THS4505
I designed a single-ended to differential signal amplifier using a tool provided by Texas Instruments:
The source signal passes through a voltage follower (OPA810IDBVR), so the output resistance ...
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How can i obtain a positive Vref for this circuit?
I have to design a irrigation system that uses a resistive moisture sensor to maintain a certain level of relative soil humidity for a plant. In order to convert the resistance changes of the moisture ...
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Is this expression wrong about single/split supply op-amps?
I'm trying to understand why some op-amps are sold as "single-supply" even though it seems all op-amps can be used with single supply voltages.
And I came across this paper which states:
...
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Cascading multiple op-amps
I am designing a circuit with 3-stage cascading op-amps, followed by a band-pass filter, for a signal centered at 1 MHz, as shown below.
My signal generator can't generate a signal below 2 mVpp, ...
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Multiple-stage op-amp signal distortion
To test it - I changed the gain to be 5 instead of 100, but it still didn't seem to work as expected. Is there anything wrong with the way I am coupling the two stages?
I am designing a two-stage op-...
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Adding effects to a balanced XLR signal (microphone)
I want to take a signal from a dynamic microphone (e.g. AKG D5), add a digital effect (echo using PT2399 chip), and then forward the signal to a male XLR connector and on through a standard XLR ...
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Single supply positive-only signal amplification using INA126 (two op-amp in-amp)
I need to amplify a 0.15-0.8 V very low frequency signal to the 0-10 V range of an ADC. I'm having a hard time figuring out why an INA126 does work as expected with dual supply but seems not to work ...
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Apparent contradiction in op-amp datasheet
I'm building a high-voltage regulator whose error amplifier is an op-amp.
I'm relatively new to op-amps and currently using cheap single-supply LM324 so mistakes don't cost much. The error amplifier ...
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Oscillation when oscilloscope is attached to op-amp output
I have a simple op-amp circuit (LT6200) designed to amplify a narrow-band signal centered around 1 MHz. The schematics is shown below.
And below is the simulation in LTSpice
I have two problems:
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Advice on active line-level audio mixer using a single supply rail
A few years ago a asked a question about an active audio (line level) mixer I wanted to make. I got some advice about how to run it off a single supply to make things easier and I was hoping to come ...
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How to determine gain of this op-amp setup
This circuitry is present to form current signal (from current transducer - LEM) to voltage signal (to be feed to the ACD).
It doesn't represent typical setup of non-inverting opamp (lack of the ...
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LED in op-amp`s feedback loop shines dimly. How to eliminate this?
I am working on my project's visual indicator part.
Everything woks as expected, but LED shines dimly when connected in feedback loop and with no control signal. Shining is barely visible, but it is ...
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LM358 output problem
I have a problem when using LM358 in compare mode.
I'm trying supply LM358 with 5V (V+ = 5V, V- = GND).
The non-inverting input is 0.6V and the inverting input is 0V and 1.2V, respectively. When the ...
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