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

a		Two-Terminal IC
		1.2 V Reference
		AD589

FEATURES

Superior Replacement for Other 1.2 V References Wide Operating Range: 50 mA to 5 mA

Low Power: 60 mW Total PD at 50 mA

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.

FUNCTIONAL BLOCK DIAGRAMS

	SOIC (SO-8)					Metal Can (H-02A)
						+V
	1			8	+V
	2			7
	3			6
–V
	4			5		–V
		AD589

TOP VIEW	BOTTOM VIEW

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 MIL- STD-883. Refer to the Analog Devices Military Products Databook or current AD589/883B data sheet for detailed specifications.

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.

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AD589–SPECIFICATIONS (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														μV
10 Hz < f < 10 kHz		5			5			5			5
TEMPERATURE COEFFICIENT1			100			50			25				10	ppm/°C
TURN-ON SETTLING TIME TO 0.1%		25			25			25			25			μs
OPERATING CURRENT2	0.05		5	0.05		5	0.05		5	0.05			5	mA
OPERATING TEMPERATURE	0		+70	0		+70	0		+70	0			+70	°C
PACKAGE OPTION3
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										μV
10 Hz < f < 10 kHz		5			5			5
TEMPERATURE COEFFICIENT1			100			50			25	ppm/°C
TURN-ON SETTLING TIME TO 0.1%		25			25			25		μs
OPERATING CURRENT2	0.05		5	0.05		5	0.05		5	mA
OPERATING TEMPERATURE	–55		+125	–55		+125	–25		+125	°C
PACKAGE OPTION3
Metal Can (H-02A)	AD589SH				AD589TH		AD589UH
SOIC (SO-8)	AD589JR

NOTES

1See the following page for explanation of temperature coefficient measurement method.

2Optimum 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. 3H = 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
Current . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . 10 mA
Reverse Current . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . 10 mA
Power Dissipation1 . . . . . . . . . . . . . . . . .	. . . . . . . . . . 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

1Absolute 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.

AD589 CHIP DIMENSIONS AND PAD LAYOUT

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