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Papabravo said:Sometimes, as in process control, you want that oh so limited slew rate because nothing can or should change faster than that.
dknguyen said:Slew rate is affected by capacitance and is just the maximum speed that the output on something like an op-amp can move at to follow an even faster input signal.
Like if the slew rate is 10V/us and you input a signal that is changing slower than that, the output will be just fine. But the input signal has an area where it is changing at 10V/us or higher, the output will be 10V/us since the device's output can't react that fast. So a really vertical input would appear as a steady slope equal to the slew rate.
Some manufacturers just don't put it on their sheet just because.
dknguyen said:Slew rate is affected by capacitance and is just the maximum speed that the output on something like an op-amp can move at to follow an even faster input signal.
Like if the slew rate is 10V/us and you input a signal that is changing slower than that, the output will be just fine. But the input signal has an area where it is changing at 10V/us or higher, the output will be 10V/us since the device's output can't react that fast. So a really vertical input would appear as a steady slope equal to the slew rate.
Some manufacturers just don't put it on their sheet just because.
I once designed an LH0033 into a product. You can buy op amps today that will slew faster than 6000v/usec.zevon8 said:At the risk of dating oneself, and anyone else who cares to hold up their hand, LOL, remember the National Semiconductor LH0033 and LH0063 ?
They were called the "Fast" and "Damn Fast" buffers, at 1500V/uS and 6000V/uS. This was written as the tilte, right in the databooks. I think Bob Pease had something to do with the naming. Speaking of Mr Pease, there was once a member here that used a picture of Mr. Pease from one of the trade magazines.