AD589

a FEATURES Superior Replacement for Other 1.2 V References Wide Operating Range: 50 ␮A to 5 mA Low Power: 60 ␮ W Total PD at 50 ␮ A Low Temperature Coefficient: 10 ppm/؇ C max, 0؇ C to +70؇ C (AD589M) 25 ppm/ ؇C max, –55؇ C to +125؇ C (AD589U) Two-Terminal “Zener” Operation Low Output Impedance: 0.6 ⍀ No Frequency Compensation Required Low Cost MIL-STD-883 Compliant Versions Available SOIC (SO-8) 1 2 3 –V 4 8 7 6 5 +V Two-Terminal IC 1.2 V Reference AD589 FUNCTIONAL BLOCK DIAGRAMS Metal Can (H-02A) +V AD589 TOP VIEW –V BOTTOM VIEW 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 ...