0

5

10

15

20

25

30

35

40

Thermal Hysterisis - V

C013

0

5

10

15

20

25

30

35

40

Thermal Hysteresis - V

C014

PRE

POST

6

HYST

NOM

V

V

V

10

(ppm)

V

§

·



x

¨

¸

¨

¸

©

¹

REF1925, REF1930, REF1933, REF1941

www.ti.com

SBOS697 – SEPTEMBER 2014

8.2 Thermal Hysteresis

Thermal hysteresis is measured with the REF19xx soldered to a PCB, similar to a real-world application. Thermal

hysteresis for the device is defined as the change in output voltage after operating the device at 25°C, cycling the

device through the specified temperature range, and returning to 25°C. Hysteresis can be expressed by

Equation 1:

where

•

•

•

•

range of –40°C to 125°C and returns to 25°C.

(1)

Typical thermal hysteresis distribution is as shown in Figure 39 and Figure 40.

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Product Folder Links: REF1925 REF1930 REF1933 REF1941