schmitt trigger
Advanced Member level 5
Could you get some SOIC to DIP adapters instead?
As you have noted, supplies of DIP packaged ICs are dwindling very fast.
As you have noted, supplies of DIP packaged ICs are dwindling very fast.
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Those both should work but operate on 6V and 7V maximum so the power configuration must accommodate that.................
I managed to found some rail-to-rail & low offset DIP8 opamps available: TLV2462-IP (Texas Instruments) and MCP6021-IP (Microchip). Could anyone suggest one over the other?
I added it to stabilize the loop and avoid the overshoot and oscillations I found in the simulation, likely due to the gate capacitance of the MOSFET affecting the loop phase.................
Many thanks for the simulation. I have one more question though: usually, there's no such a resistor (R3) in a transconductance amplifier loop. Is it related to the opamp used for your simulation or do I really need to add one in my circuit?
The BJT has a base-emitter current which will cause an error in the collector current as compared to the emitter current (perhaps giving an error of 1% or so in the output current).Just for the reference: is there any advantage of using a P-channel MOSFET instead of a PNP BJT?
Yes you can, but the hFE varies with current and temperature so you can only completely compensate for it at one current and one temperature.Oh, ..............
That's the way to go BUT.. (for science sake, once again!) couldn't that BJT base current be compensate by a proper calibration of R2 / Rout ratio?
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