Analog Devices AD589UH, AD589TH, AD589SH, AD589MH, AD589LH Datasheet

Two-Terminal IC

a

FEATURES
Superior Replacement for Other 1.2 V References
Wide Operating Range: 50 mA to 5 mA
Low Power: 60 mW Total P
Low Temperature Coefficient:

10 ppm/8C max, 08C to +708C (AD589M)

25 ppm/8C max, –558C to +1258C (AD589U)
Two-Terminal “Zener” Operation
Low Output Impedance: 0.6 V
No Frequency Compensation Required
Low Cost
MIL-STD-883 Compliant Versions Available

PRODUCT DESCRIPTION

The AD589 is a two-terminal, low cost, temperature compen­sated bandgap voltage reference which provides a fixed 1.23 V
output voltage for input currents between 50 µA 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.

at 50 mA

D

1.2 V Reference
AD589

FUNCTIONAL BLOCK DIAGRAMS

SOIC (SO-8) Metal Can (H-02A)

1

2

3
4

–V

PRODUCT HIGHLIGHTS

1. The AD589 is a two-terminal device which delivers a
constant reference voltage for a wide range of input
current.

2. Output impedance of 0.6 Ω and temperature coefficients as
low as 10 ppm/°C insure stable output voltage over a wide
range of operating conditions.

3. The AD589 can be operated as a positive or negative
reference. “Floating” operation is also possible.

4. The AD589 will operate with total current as low as 50 µA
(60 µW total power dissipation), ideal for battery powered
instrument applications.

5. The AD589 is an exact replacement for other 1.2 V ref­erences, offering superior temperature performance and
reduced sensitivity to capacitive loading.

6. The AD589 is available in versions compliant with MIL­STD-883. Refer to the Analog Devices Military Products
Databook or current AD589/883B data sheet for detailed
specifications.

AD589

TOP VIEW

8

+V

7

6
5

+V

–V

BOTTOM VIEW

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] Fax: [phone]

AD589–SPECIFICA TIONS

(typical @ IIN = 500 mA and TA = +258C unless otherwise noted)

Model AD589JH/JR AD589KH AD589LH AD589MH

Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit

OUTPUT VOLTAGE, TA = +25°C 1.200 1.235 1.250 1.200 1.235 1.250 1.200 1.235 1.250 1.200 1.235 1.250 V
OUTPUT VOLTAGE CHANGE vs.

CURRENT

(50 µA–5 mA) 5 5 5 5 mV
DYNAMIC OUTPUT IMPEDANCE 0.6 2 0.6 2 0.6 2 0.6 2 Ω
RMS NOISE VOLTAGE

10 Hz < f < 10 kHz 5 5 5 5 µV

TEMPERATURE COEFFICIENT

1

100 50 25 10 ppm/°C
TURN-ON SETTLING TIME TO 0.1% 25 25 25 25 µs
OPERATING CURRENT

2

0.05 5 0.05 5 0.05 5 0.05 5mA
OPERATING TEMPERATURE 0 +70 0 +70 0 +70 0 +70 °C
PACKAGE OPTION

3

Metal Can (H-02A) AD589JH AD589KH AD589LH AD589MH
SOIC (R-8) AD589JR

Model AD589SH AD589TH AD589UH

Min Typ Max Min Typ Max Min Typ Max Unit

OUTPUT VOLTAGE, TA = +25°C 1.200 1.235 1.250 1.200 1.235 1.250 1.200 1.235 1.250 V
OUTPUT VOLTAGE CHANGE vs.

CURRENT

(50 µA–5 mA) 5 5 5 mV
DYNAMIC OUTPUT IMPEDANCE 0.6 2 0.6 2 0.6 2 Ω
RMS NOISE VOLTAGE

10 Hz < f < 10 kHz 5 5 5 µV

TEMPERATURE COEFFICIENT

1

100 50 25 ppm/°C
TURN-ON SETTLING TIME TO 0.1% 25 25 25 µs
OPERATING CURRENT

2

0.05 5 0.05 5 0.05 5mA
OPERATING TEMPERATURE –55 +125 –55 +125 –25 +125 °C
PACKAGE OPTION

3

Metal Can (H-02A) AD589SH AD589TH AD589UH
SOIC (SO-8) AD589JR

NOTES

1

See the following page for explanation of temperature coefficient measurement method.

2

Optimum performance is obtained at currents below 500 µA. For current operation below 200 µA, stray shunt capacitances should be limited
to 20 pF or increased to 1µF. If strays can not be avoided, operation at 500 µA and a shunt capacitor of at least 1000 pF are recommended.

3

H = Hermetic Metal Can; SO = SOIC.
Specifications shown in boldface are tested on all production units at final electrical test.
Specifications subject to change without notice.

ABSOLUTE MAXIMUM RATINGS

AD589 CHIP DIMENSIONS AND PAD LAYOUT

Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA

Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA

Power Dissipation

1

. . . . . . . . . . . . . . . . . . . . . . . . . . .125 mW

Storage Temperature . . . . . . . . . . . . . . . . . . .–65°C to +175°C

Operating Junction Temperature Range . . . .–55°C to +150°C

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . +300°C

NOTE

1

Absolute maximum power dissipation is limited by maximum current through the
device. Maximum rating at elevated temperatures must be computed assuming
TJ≤ 150°C, and θJA = 400 = C/W.

0.040

(1.016)

0.060

(1.524)

THE AD589 IS AVAILABLE IN CHIP FORM WITH FULLY TESTED
AND GUARANTEED SPECIFICATIONS. CONSULT FACTORY FOR
AVAILABLE GRADES AND PRICING.

–2–

REV. B