2-Terminal IC 1.2 V Reference AD589 FEATURES FUNCTIONAL BLOCK DIAGRAMS Superior Replacement for Other 1.2 V References Wide Operating Range: 50 A to 5 mA SOIC (R-8) Metal Can (H-02) Low Power: 60 W Total P at 50 A D Low Temperature Coef ficient: 10 ppm/ C Max, 0 C to 70 C (AD589M) 1 8 + V 2 7 2-Terminal Zener Operation 3 6 Low Output Impedance: 0.6 V 4 5 No Frequency Compensation Required AD589 Low Cost TOP VIE W MIL-STD-883 Compliant Versions Available ( Not to Scale) PRODUCT DESCRIPTION PRODUCT HIGHLIGHTS The AD589 is a 2-terminal, low cost, temperature compensated 1. The AD589 is a 2-terminal device that delivers a constant band gap voltage reference that provides a fi xed 1.23 V output reference voltage for a wide range of input current. voltage for input currents between 50 A and 5.0 mA. 2. Output impedance of 0.6 and temperature coeffi cients as The high stability of the AD589 is primarily dependent upon low as 10 ppm/C ensure stable output voltage over a wide the matching and thermal tracking of the on-chip components. range of operating conditions. Analog Devices precision bipolar processing and thin-fi lm tech- 3. The AD589 can be operated as a positive or negative refer- nology combine to provide excellent performance at low cost. ence. Floating operation is also possible. Additionally, the active circuit produces an output impedance 10 4. The AD589 will operate with a total current as low as 50 A lower than the typical low-TC Zener diodes. This feature allows (60 W total power dissipation), ideal for battery-powered operation with no external components required to maintain full instrument applications. accuracy under changing load conditions. 5. The AD589 is an exact replacement for other 1.2 V references, The AD589 is available in seven versions. The AD589J, AD589K, offering superior temperature performance and reduced sensi- AD589L, and AD589M grades are specifi ed for 0C to +70C tivity to capacitive loading. operation, while the AD589S and AD589T grades are rated for 6. The AD589 is available in versions compliant with MIL- the full 55C to +125C temperature range. All grades are avail- STD-883. Consult factory for 883 data sheet. able in a metal can (H-02) package. The AD589J is also available in an 8-lead SOIC package. REV. C Information furnished by Analog Devices is be lieved 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. that may result from its use. No license is granted by implication or oth- Tel: 781/329-4700 www.analog.com erwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Fax: 781/326-8703 2004 Analog Devices, Inc. All rights reserved.AD589SPECIFICATIONS (Typical I = 500 A and T = 25C, unless otherwise noted.) IN A AD589JH/ Model AD589JR AD589KH AD589LH AD589MH Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit OUTPUT VOLTAGE, T = 25C 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 A OUTPUT VOLTAGE CHANGE VERSUS CURRENT 50 A to 5 mA 5 5 5 5 mV DYNAMIC OUTPUT IMPEDANCE 0.6 2 0.6 2 0.6 2 0.6 2 RMS NOISE VOLTAGE 10 Hz < f < 10 kHz 5 5 5 5 V 1 TEMPERATURE COEFFICIENT 100 50 25 10 ppm/C TURN-ON SETTLING TIME TO 0.1% 25 25 25 25 s 2 OPERATING CURRENT 0.05 5 0.05 5 0.05 5 0.05 5 mA OPERATING TEMPERATURE 0 70 0 70 0 70 0 70 C 3 PACKAGE OPTION Metal Can (H-02A) AD589JH AD589KH AD589LH AD589MH SOIC (R-8) AD589JR Model AD589SH AD589TH Min Typ Max Min Typ Max Unit OUTPUT VOLTAGE, T = 25C 1.200 1.235 1.250 1.200 1.235 1.250 V A OUTPUT VOLTAGE CHANGE VERSUS CURRENT 50 A to 5 mA 5 5 mV DYNAMIC OUTPUT IMPEDANCE 0.6 2 0.6 2 RMS NOISE VOLTAGE 10 Hz < f < 10 kHz 5 5 V 1 TEMPERATURE COEFFICIENT 100 50 ppm/C TURN-ON SETTLING TIME TO 0.1% 25 25 s 2 OPERATING CURRENT 0.05 5 0.05 5 mA OPERATING TEMPERATURE 55 +125 55 +125 C 3 PACKAGE OPTION Metal Can (H-02) AD589SH AD589TH SOIC (R-8) AD589JR NOTES 1 See the Voltage Variation versus Temperature section for explanation of temperature coeffi cient measurement method. 2 Optimum performance is obtained at currents below 500 A. For current operation below 200 A, stray shunt capacitances should be limited to 20 pF or increased to 1 F. If strays cannot be avoided, operation at 500 A and a shunt capacitor of at least 1000 pF are recommended. 3 H = Hermetic Metal Can R = SOIC. Specifi cations shown in boldface are tested on all production units at fi nal electrical test. Specifi cations subject to change without notice. 2 REV. C