Analog Devices AN695 Application Notes

AN-695

APPLICATION NOTE

One Technology Way

9106

www.analog.com

thermistor (3450

TEC+

TEC–

PVDD

GND

TEC

+

POWER
SUPPLY

TEMPSET

AG

ND

THERMIN

ADN8831 DEMO BOARD

R

TH

–

= 3450 thermistor.

T m TEMPSET VREF

SET

= 25 C – ( – / 2) ° ×

is approximately 2.4 V, and

lowers the temperature -to -TEMPSET slope

/2

/2

is the gain constant and

C10

= 10 and

= 3.3 rads.

and

if C10 has been adjusted.

(found from Step 5 in the previous

is different from R

to

= 17.8 k

and

and

recorded from the

recorded from the

= 67 k

= 40 k