6

by such shocks.

Typical Applications

The sum of the AD590 currents appears across R, which is

chosen by the formula:

,

where n = the number of sensors. See Figure 8.

+

-

AD590

1k

Ω

+5V

FIGURE 6A.

423

298.2

218

TEMPERATURE

FIGURE 6B.

FIGURE 6. SIMPLE CONNECTION. OUTPUT IS PROPORTIONAL

TO ABSOLUTE TEMPERATURE

+15V

10k

Ω

+

AD590 (AS MANY AS DESIRED)

-

+

-

+

-

0.1%

FIGURE 7. LOWEST TEMPERATURE SENSING SCHEME.

AVAILABLE CURRENT IS THAT OF THE

“COLDEST” SENSOR

+15V

+

-

+

-

+

-

(ADDITIONAL SENSORS)

333.3

Ω

0.1%

n

(FOR 3 SENSORS)

FIGURE 8. AVERAGE TEMPERATURE SENSING SCHEME

R

10k

Ω

n

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

=

+15V

R

+

AD590

-

C

3

2

4

1

7

LM311

ICL8069

1.23V

HEATER

ELEMENT

0.1%

FIGURE 9. SINGLE SETPOINT TEMPERATURE CONTROLLER

AD590