Parameter definitions

CS70

16/24

DocID026041 Rev 1

5.5

Input offset drift versus temperature

respect to its value at 25 °C over the temperature range. It is calculated as follows:

Figure 19 provides a graphical definition of the input offset drift versus temperature. On this

versus T, and T = 25 °C is considered to be the reference.

Figure 19. Input offset drift versus temperature (Av = 50 V/V)

5.6

Output voltage accuracy

The output voltage accuracy is the difference between the actual output voltage and the

theoretical output voltage. Ideally, the current sensing output voltage should be equal to the

input differential voltage multiplied by the theoretical gain, as in the following formula.

The actual value is very slightly different, mainly due to the effects of:





the non-linearity

V

os

T

---------------max

V

os

T

amb

 V

os

25

C



–

T

amb

25

C

–

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

=

-2.5

-2

-1.5

-1

-0.5

0

0.5

1

1.5

-60

-40

-20

0

20

40

60

80

100 120 140

T (°C)