Datasheet

Application information TSV731, TSV732, TSV734
18/29 DocID023708 Rev 2
Equation 5
To evaluate the op-amp reliability, a follower stress condition is used where V
CC
is defined
as a function of the maximum operating voltage and the absolute maximum rating (as
recommended by JEDEC rules).
The V
io
drift (in µV) of the product after 1000 h of stress is tracked with parameters at
different measurement conditions (see
Equation 6).
Equation 6
The long term drift parameter (ΔV
io
), estimating the reliability performance of the product, is
obtained using the ratio of the V
io
(input offset voltage value) drift over the square root of the
calculated number of months (
Equation 7).
Equation 7
where V
io
drift is the measured drift value in the specified test conditions after 1000 h stress
duration.
Months A
F
1000 h× 12 months 24 h 365.25 days×()⁄×=
V
CC
maxV
op
with V
icm
V
CC
2⁄==
ΔV
io
V
io
drift
months()
------------------------------=