PRODUCT DESCRIPTION
The AD589 is a 2-terminal, low cost, temperature compensated
band gap voltage reference that 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 tech-
nology combine to provide excellent performance at low cost.
Additionally, the active circuit produces an output impedance 10
lower than the 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, AD589K,
AD589L, and AD589M grades are specified for 0°C to +70°C
operation, while the AD589S and AD589T grades are rated for
the full –55°C to +125°C temperature range. All grades are avail-
able in a metal can (H-02) package. The AD589J is also available
in an 8-lead SOIC package.
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
that may result from its use. No license is granted by implication or oth-
erwise under any patent or patent rights of Analog Devices.Trademarks
and registered trademarks are the property of their respective owners.
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:
2-Terminal Zener Operation
Low Output Impedance: 0.6
No Frequency Compensation Required
Low Cost
MIL-STD-883 Compliant Versions Available
10 ppm/C Max, 0C to 70C (AD589M)
D
at 50 A
PRODUCT HIGHLIGHTS
1. The AD589 is a 2-terminal device that delivers a constant
2. Output impedance of 0.6 and temperature coefficients as
3. The AD589 can be operated as a positive or negative refer-
4. The AD589 will operate with a total current as low as 50 A
5. The AD589 is an exact replacement for other 1.2 V references,
6. The AD589 is available in versions compliant with MIL-
reference voltage for a wide range of input current.
low as 10 ppm/°C ensure stable output voltage over a wide
range of operating conditions.
ence. Floating operation is also possible.
(60 W total power dissipation), ideal for battery-powered
instrument applications.
offering superior temperature performance and reduced sensi-
tivity to capacitive loading.
STD-883. Consult factory for 883 data sheet.
–V
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SOIC (R-8)
(Not to Scale)
TOP VIEW
AD589
FUNCTIONAL BLOCK DIAGRAMS
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© 2004 Analog Devices, Inc. All rights reserved.
+V
1.2 V Reference
2-Terminal IC
Metal Can (H-02)
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AD589
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