[sdiy] TL068 datasheet anyone?

[Mike I.]

My old TI "Linear Control Circuits Databook" lists some neat stuff like the
TL066 programmable BIFET op amp, the TL010 etc current mirror, the TL173
linear Hall effect sensor, but no TL068.

My guess is that the TL068 could be a TL061 connected as a follower
internally, or at least share some of the same circuitry.

Other integrated followers (some of which are still in production), are the
LM110/LM310   BUF-01   BUF634. These are commonly in minidip packages. Some
of these have an offset of 30-100 mV and are best used in the feedback loop
of an op amp. Another possibility is discrete followers made from a pair of
selected FETs.
Mike