TSV521, TSV522, TSV524, TSV521A, TSV522A, TSV524A

Application information

Doc ID 022743 Rev 1

15/27

Figure 29.

In series resistor versus capacitive load

4.6

Input offset voltage drift over temperature

The maximum input voltage drift over temperature variation is defined as the offset variation

related to offset value measured at 25 °C. The operational amplifier is one of the main

circuits of the signal conditioning chain, and the amplifier input offset is a major contributor

to the chain accuracy. The signal chain accuracy at 25 °C can be compensated during

production at application level. The maximum input voltage drift over temperature enables

the system designer to anticipate the effects of temperature variations.

The maximum input voltage drift over temperature is computed in Equation 1:

Equation 1

with T = -40 °C and 125 °C.

The datasheet maximum value is guaranteed by measurement on a representative sample

size ensuring a Cpk greater than 2.

ΔV

io

ΔT

------------

max

V

() V

()

–

T25

° C

–

---------------------------------------------------

=