Posted on May 14, 2012 at 10:15Dear Jean,
Most of the time the wide band amplifiers are used for RF application. They have been called ''wide band'' in opposite to the narrow band amplifiers that have a higher selectivity. These narrow band amplifiers can be used to amplify a signal at a specific frequency : 1.8GHz or 2.45GHz for example.
Another point is that the wide band denomination is related to the application. For example, a 200MHz audio amplifiers can be assimilated to a wideband amplifier.
Regarding the op-amps, there is no real difference between wide band and high speed. Both of them have a high GBP. High speed amplifiers have a GBP higher than 50MHz (the boundary is not frozen, it can shift a little bit).
Note that in a general case, the high speed and wide band amplifiers are not able to drive as heavy capacitive loads as the op-amps can do.
Best regards,
Sylvain
Hello,
In products selection tools, there is often a distinction between « High Speed » and « Wide Band » OpAmps.
What are the differentiation parameters? Thanks for the support,
Jean
