AD587

Rev. H | Page 9 of 12

Each AD587J and AD587K grade unit is tested at 0°C, 25°C,

and 70°C. Each AD587U grade unit is tested at −55°C, +25°C,

and +125°C. This approach ensures that the variations of the

output voltage that occur as the temperature changes within the

specified range are contained within a box whose diagonal has a

slope equal to the maximum specified drift. The position of the

box on the vertical scale changes from device to device as initial

error and the shape of the curve vary. The maximum height of

the box for the appropriate temperature range and device grade

is shown in Figure 16. Duplication of these results requires a

combination of high accuracy and stable temperature control in

a test system.

DEVICE

GRADE

AD587J

AD587K

AD587U

14.00

7.00

9.00

0 TO +70°C

–55°C TO +125°C

MAXIMUM OUTPUT CHANGE – mV

Figure 16. Maximum Output Change in Millivolts

NEGATIVE REFERENCE VOLTAGE FROM AN AD587

The AD587 can be used as shown in Figure 17 to provide a

+3.5 V supply, the output pin is grounded, and the AD587

supply. The −10 V output is taken from the ground pin (Pin 4)

The temperature characteristics and long-term stability of the

device is essentially the same as that of a unit used in the

standard 10 V output configuration.

2

6

4

GND

AD587

3.5V→26V

1nF

–15V

–10V

2.5mA <

5V

Figure 17. AD587 as a Negative 10 V Reference