LF411: Simulation based on SBOA436

Shotaro Sakai

Part Number: LF411
Other Parts Discussed in Thread: TL071H, TL081H

Hello team,

My customer is simulating a circuit based on SBOA436(https://www.ti.com/lit/an/sboa436/sboa436.pdf).

In the simulation, we obtained an output clip of current and voltage. I think that the opamp capability of current leads this result. (The opamp of output current is not sufficient...?) What do you think on this? I attached TINA file.

LF411.TSC

Best regards,

Shotaro

10 months ago

0 Ron Michallick 10 months ago

TI__Guru*** 140666 points

Hello Shotaro-san,

With an ideal amplifier, the output current is +/-1 ampere sine. This is far beyond the output current capability of LF411.

0 Shotaro Sakai 10 months ago in reply to Ron Michallick

TI__Intellectual 2450 points

Hello Ron-san,

Do we have the value for the output current capability of LF411?

Best regards,

Shotaro

+1 Ron Michallick 10 months ago in reply to Shotaro Sakai

TI__Guru*** 140666 points

Shotaro-san,

For new designs, I recommend TL071H or TL081H which are same.

I did find sample data for one LF411 device. Tested up to 20mA load.

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LF411: Simulation based on SBOA436