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Other parameters, for a load of 2 kilohms Power BW page 3, figs 6,7,8 and others. Voltage output swing is spec’ed in the datasheet for a load of 10, ohms figs 17, If the resulting DC bias is a problem, there are 2 options: Caps hold a charge voltage if there is no load.
To minimise the leakage it needs to be properly biased about half its rated voltage so that the electric field builds up the insulating layer by It will be utterly hopeless driving 10 ohms. The clue is in its name If a lower one would be used it will attenuate the signal at the output.
Curious as why this happened? Home Questions Tags Users Unanswered. An oscilloscope is only connected to the output, i double checked, but its on the board board with many components on it, maybe that could be it?
The reasoning I am using such a high value capacitor is due to it high pass nature it creature with the load, the higher I use the likely hood it will pass all the output signal to the output stage. So what is the load? Capacitor allowing DC through?
Dual Audio Operational Amplifier
But that makes a lot of more sense, datasheeet you so much for shedding some light. Sign up using Facebook. Post as a guest Name. Sign up using Email and Password.
If the resulting DC bias is a problem, there are 2 options:. A load resistance of a few kilohms will reduce the DC output to a few millivolts Or replace the capacitor datasheft a lower leakage type film cap or ceramic.
Your last comment implies it has trouble even driving ohms, which is not very surprising.
LMN Datasheet pdf – DUAL OPERATIONAL AMPLIFIER – Motorola
Email Required, but never shown. Note there is no need for such a large value: TonyEErocketscientist You were rocket my apologize, adding a load fixed the offset issue. What’s connected to the output? What happens if you put a K pull-down on the output?
What’s the leakage current spec on the 1mF cap? Sign up or log in Sign up using Google.
op amp – Capacitor allowing DC through? LMN – Electrical Engineering Stack Exchange