AD587KQ Analog Devices Inc, AD587KQ Datasheet - Page 9

• Manufacturer Part Number: AD587KQ
• Manufacturer: Analog Devices Inc

Specifications of AD587KQ

• Fixed / Adjust / Prog: Precision
• Output Voltage (max): 10V
• Temperature Coefficient: 10ppm/°C
• Reference Voltage Accuracy (max): 5
• Line Regulation: 100uV/V
• Load Regulation: 100uV/mA
• Input Voltage (max): 36V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 8
• Package Type: CDIP
• Lead Free Status / Rohs Status: Not Compliant

Each AD587J, AD587K, and AD587L 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 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 17. Duplication of these results
requires a combination of high accuracy and stable temperature
control in a test system. Evaluation of the AD587 produces a
curve similar to that in Figure 16, but output readings may vary
depending on the test methods and equipment utilized.
AD587K
AD587U
DEVICE
AD587L
AD587J
GRADE
Figure 17. Maximum Output Change in mV
MAXIMUM OUTPUT CHANGE – mV
0 TO +70°C
14.00
7.00
3.50
–55°C TO +125°C
9.00
Rev. G | Page 9 of 12
NEGATIVE REFERENCE VOLTAGE FROM AN AD587
The AD587 can be used to provide a precision −10.000 V
output as shown in Figure 18. The +V
+3.5 V supply, the output pin is grounded, and the AD587
ground pin is connected through a resistor, R
supply. The −10 V output is taken from the ground pin (Pin 4)
instead of V
supply resistor R
between 2.5 mA and 10.0 mA. 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.
OUT
Figure 18. AD587 as a Negative 10 V Reference
1nF
. It is essential to arrange the output load and the
S
so that the net current through the AD587 is
AD587
3.5V→26V
–15V
GND
V
2
4
IN
R
S
V
OUT
2.5mA <
6
←I
R
5V
L
IN
S
–I
pin is tied to at least a
–10V
L
< 10mA
S
, to a −15 V
AD587