LF412: Unacceptable slewrate

Hi Jorgen,

Yes, the LF412 has gone through FAB change, see the PCN link below. 

https://www.mouser.com/PCN/Texas_Instruments_PCN20221216011_20221222111743213.pdf

Jørgen Iversen said:

I have tested TLV9362, and though this type also seems to have some kind of  slew-rate-boost-feature, it was working perfect.

Not all slew boosted features in op amps are created the equal. TLV9362 also has the slew boosted feature. The certain selection of general purpose op amps are supported by PRAMPS team since last November. The purpose of slew boosted design is to lower the quiescent current under a nominal operation, and trigger the slew rate boosted feature when the input signal is triggered beyond a certain threshold.  

What type of slew rate are you looking for? What is your application? 

In the following PRAMPS op amp selection, it does not have the slew-transitional issues. For instance, the low cost version  such as TLV2197, OPA2197. These have slew rate of 20V/usec and should likely meet your requirements.

https://www.ti.com/amplifier-circuit/op-amps/precision/products.html#23typ=10%3B20&sort=1130;asc&

If you have additional questions, please let me know. 

Best,

Raymond

Hi Jorgen, 

I am going to close this query, since I have not heard from you. 

If you have additional questions, please let me know. 

Best,

Raymond

I have decided to use TLV9362 because it seems to do the job :-)