sample & hold caps/ timing.

[Grant Richter]

> 
> Slew rate: 16V/us
> input bias current: 50pA
> 
By the time you get to this grad of op-amp,
you also had better have very professional technique.

There would be no point in moving from a TL0xx to
the AD7xx series if the circuit is not defluxed and/or
is located on a paper board.

To use an op-amp at this level of input current
you must deflux the board and use an epoxy-glass
substrate.