AD586
PRECISION CURRENT SOURCE
PRECISION HIGH CURRENT SUPPLY
Figure 15. Precision Current Source
For higher currents, the AD586 can easily be connected to a
power PNP or power Darlington PNP device. The circuit in
Figure 16 can deliver up to 4 amps to the load. The 0.1
µF
capacitor is required only if the load has a significant capacitive
component. If the load is purely resistive, improved high-
frequency supply rejection results can be obtained by removing
the capacitor.
Figure 16a. Precision High-Current Current Source
Figure 16b. Precision High-Current Voltage Source
OUTLINE DIMENSIONS
Dimensions shown in inches and (mm.)
Mini-DIP (N-8) Package
Cerdip (Q-8) Package
Small Outline (R-8) Package
–8–
REV. C
PRINTED IN U.S.A.
C1069b–2–10/93
The design of the AD586 allows it to be easily configured as a
current source. By choosing the control resistor R
C
in Figure 15,
you can vary the load current from the quiescent current (2 mA
typically) to approximately 10 mA. The compliance voltage of
this circuit varies from about +5 V to +21 V depending upon
the value of V
IN
.
AD [ ANALOG DEVICES ]
