AD580

FEATURES Laser-trimmed to high accuracy: 2.500 V ±0.4% 3-terminal device: voltage in/voltage out Excellent temperature stability: 10 ppm/°C (AD580M, U) Excellent long-term stability: 250 μV (25 μV/month) Low quiescent current: 1.5 mA maximum Small, hermetic IC package: TO-52 can MIL-STD-883 compliant versions available GENERAL DESCRIPTION The AD580 is a 3-terminal, low cost, temperature-compensated, bandgap voltage reference, which provides a fixed 2.5 V output for inputs between 4.5 V and 30 V. A unique combination of advanced circuit design and laser-wafer trimmed thin film resistors provide the AD580 with an initial tolerance of ±0.4%, a temperature stability of better than 10 ppm/°C, and long-term stability of better than 250 μV. In addition, the low quiescent current drain of 1.5 mA maximum offers a clear advantage over classical Zener techniques. The AD580 is recommended as a stable reference for all 8-, 10-, and 12-bit D/A converters that require an external reference. In addition, the wide input range of the AD580 allows operation with 5 volt logic supplies, making the AD580 ideal for digital panel meter applications or whenever only a single logic power supply is available. The AD580J, K, L, and M are specified for operation over the 0°C to +70°C temperature range; the AD580S, T, and U are specified for operation over the extended temperature range of –55°C to +125°C. High Precision, 2.5 V IC Reference AD580 FUNCTIONAL BLOCK DIAGRAM +E BOTTOM VIEW EOUT 00525-B-...