OPamp configurations for high slew rate.

D

Doug314

New Member
I need an opamp configuration with the following specs. slew rate 14 v/us, Voltage range 18V, current output typically 1.5A or 5A peak. There are configurations one can use to achieve these results using multiple opamps, I assume. I need guidance on what type of configuration I would need to achieve these results.
 
You cannot increase the intrinsic slew-rate of an op amp as given in their data sheet.
You have to buy one with sufficient slew-rate (probably at least 20 V/us if you need 14 V/us).
 
crutschow said:
You cannot increase the intrinsic slew-rate of an op amp as given in their data sheet.
You have to buy one with sufficient slew-rate (probably at least 20 V/us if you need 14 V/us).
Click to expand...
You can add transistors at the output to increase the slew rate, and the GBW.
 
Last edited:
dougy83 said:
You can add transistors at the output to increase the slew rate, and the GBW.
Click to expand...
Only if you know how to compensate for the extra gain/bandwidth to keep the circuit stable.
 
Used to be not very expensive and easily available.



TL072, just 13 V/us
 
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