AD589U AD [Analog Devices], AD589U Datasheet
AD589U
Manufacturer Part Number
AD589U
Description
Two-Terminal IC 1.2 V Reference
Manufacturer
AD [Analog Devices]
Datasheet
1.AD589U.pdf
(4 pages)
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a
PRODUCT DESCRIPTION
The AD589 is a two-terminal, low cost, temperature compen-
sated bandgap voltage reference which provides a fixed 1.23 V
output voltage for input currents between 50 A and 5.0 mA.
The high stability of the AD589 is primarily dependent upon
the matching and thermal tracking of the on-chip components.
Analog Devices’ precision bipolar processing and thin-film
technology combine to provide excellent performance at low
cost.
Additionally, the active circuit produces an output impedance
ten times lower than typical low-TC Zener diodes. This feature
allows operation with no external components required to
maintain full accuracy under changing load conditions.
The AD589 is available in seven versions. The AD589J, K, L
and M grades are specified for 0 C to +70 C operation, while
the S, T, and U grades are rated for the full –55 C to +125 C
temperature range. All grades are available in a metal can
(H-02A) package. The AD589J is also available in an 8-pin
SOIC package.
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
Superior Replacement for Other 1.2 V References
Wide Operating Range: 50 A to 5 mA
Low Power: 60 W Total P
Low Temperature Coefficient:
Two-Terminal “Zener” Operation
Low Output Impedance: 0.6
No Frequency Compensation Required
Low Cost
MIL-STD-883 Compliant Versions Available
10 ppm/ C max, 0 C to +70 C (AD589M)
25 ppm/ C max, –55 C to +125 C (AD589U)
D
at 50 A
PRODUCT HIGHLIGHTS
1. The AD589 is a two-terminal device which delivers a
2. Output impedance of 0.6
3. The AD589 can be operated as a positive or negative
4. The AD589 will operate with total current as low as 50 A
5. The AD589 is an exact replacement for other 1.2 V ref-
6. The AD589 is available in versions compliant with MIL-
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
constant reference voltage for a wide range of input
current.
low as 10 ppm/ C insure stable output voltage over a wide
range of operating conditions.
reference. “Floating” operation is also possible.
(60 W total power dissipation), ideal for battery powered
instrument applications.
erences, offering superior temperature performance and
reduced sensitivity to capacitive loading.
STD-883. Refer to the Analog Devices Military Products
Databook or current AD589/883B data sheet for detailed
specifications.
–V
4
1
2
3
SOIC (SO-8)
FUNCTIONAL BLOCK DIAGRAMS
TOP VIEW
AD589
8
7
6
5
+V
and temperature coefficients as
Two-Terminal IC
1.2 V Reference
Metal Can (H-02A)
BOTTOM VIEW
+V
–V
AD589
Fax: 617/326-8703
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AD589U Summary of contents
Page 1
... Wide Operating Range Low Power Total Low Temperature Coefficient: 10 ppm/ C max +70 C (AD589M) 25 ppm/ C max, – +125 C (AD589U) Two-Terminal “Zener” Operation Low Output Impedance: 0.6 No Frequency Compensation Required Low Cost MIL-STD-883 Compliant Versions Available ...
Page 2
... AD589LH AD589MH AD589UH Min Typ Max Unit 1.200 1.235 1.250 0 ppm 0. –25 +125 C AD589UH 0.060 (1.524) Unit ppm REV. B ...
Page 3
VOLTAGE VARIATION VS. TEMPERATURE Some confusion exists in the area of defining and specifying reference voltage error over temperature. Historically, references have been characterized using a maximum deviation per degree Centigrade; i.e., 10 ppm/ C. However, because of nonlinearities in ...
Page 4
AD589 APPLICATION INFORMATION The AD589 functions as a two-terminal shunt-type regulator. It provides a constant 1.23 V output for a wide range of input current from mA. Figure 5 shows the simplest configuration for an output ...