I want to amplify lower voltages from ranging from (0.3millivolts to 133millivolts ) using LM358P can anyone tell me how to find the gain response of the LM358
What is the max input offset voltage of the OpAmp (LM358} ?I want to amplify lower voltages from ranging from (0.3millivolts to 133millivolts ) using LM358P can anyone tell me how to find the gain response of the LM358
In the datasheet it is given 2mv i don't know what does it meanWhat is the max input offset voltage of the OpAmp (LM358} ?
It means that device has max input offset of 2mV and you cannot input signals lower than 2mV to it and it is not a Rail-To-Rail output OpAmp.In the datasheet it is given 2mv i don't know what does it mean
sir i am not getting the gain uniform if i vary from 3milli volt to 133mv whats happening means it is giving maximum gain around 31db at 3mv output voltage is also negative . But when it goes around 1.5 output voltage sign changes gain also reduced 17db and then onwards gain increases from 23-30.9It means that device has max input offset of 2mV and you cannot input signals lower than 2mV to it and it is not a Rail-To-Rail output OpAmp.
sir i am not getting the gain uniform if i vary from 3milli volt to 133mv whats happening means it is giving maximum gain around 31db at 3mv output voltage is also negative . But when it goes around 1.5 output voltage sign changes gain also reduced 17db and then onwards gain increases from 23-30.9It means that device has max input offset of 2mV and you cannot input signals lower than 2mV to it and it is not a Rail-To-Rail output OpAmp.
Show your exact hardware circuit. What power supplies are you using ?sir i am not getting the gain uniform if i vary from 3milli volt to 133mv whats happening means it is giving maximum gain around 31db at 3mv output voltage is also negative . But when it goes around 1.5 output voltage sign changes gain also reduced 17db and then onwards gain increases from 23-30.9
open source or licence proteusShow your exact hardware circuit. What power supplies are you using ?
I have not use LTSpice. I use Proteus.
I have both licenced version and cracked version and using both. I can show you my Proteus licence.open source or licence proteus
ok if want to make gain constant how the circuite should be modifiedShow your exact hardware circuit. What power supplies are you using ?
I have not use LTSpice. I use Proteus.
I checked the datasheet. It says Max input offset voltage is 5mV.
Show your circuit. What do you mean by output is not linear ? Are you testing in hardware ? If not, why don't you test it on hardware ?ok if want to make gain constant how the circuite should be modified
hi,is there any LTspice schematic for LM358
i am not giving any ac i am giving Input dc voltage to non inverting teriminal from 0.003 to 133 millivolts thats ithi,
Yes, download it from the Yahoo LTS user group.
Is this sim showing the non linearity, the circuit will be non linear, what is the frequency of your input signal.?
E
yes it should be like this but now i am not getting gain constanthi A,
Is like this sim.?
E
this is the output of trimpothi,
I assume you are talking about a real LM358 circuit.?
What is the source of the 3mV to 133mV signal.?
E
Show the full circuit. Are you measuring the voltage after amplification with a MCU ?this is the output of trimpot
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