AD580:  High Precision 2.5 V IC Reference

The AD580 is a three-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 ...More

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AD580:  High Precision 2.5 V IC Reference

Product Description

The AD580 is a three-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 250µV. In addition, the low quiescent current drain of 1.5 mA max offers a clear advantage over classical Zener techniques.

The AD580 is recommended as a stable reference for all 8-, 10- and 12-bit D-to-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.

*Protected by Patent Nos. 3,887,863; RE30,586.

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 max
  • Small, Hermetic IC Package: TO-52 Can
  • MIL-STD-883 Compliant Versions Available

Diagrams

AD580 Diagram
Functional Block Diagram for AD580

Specifications

Vout 2.5
Initial Accuracy (%) 0.4
Ref Out TC (ppm/C) 10ppm/C
Supply Voltage Range (V) +4.5 to +30
Supply Current (max) 1.5mA
Ref Output Current (mA) 10mA
0.1-10 Hz Noise (µV p-p) 8µV p-p
Temp Range(s) -55 to +125,0 to +70
Package TO-52
Reference Type Series

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AD589 1.2 1.2 10 5 n/a n/a, Shunt Type Reference -55 to +125, 0 to +70 50µA Shunt Metal Can, SOIC $1.33 Two-Terminal IC 1.2 V Shunt Reference
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ADR127 1.25 0.12 3 5 5 +2.7 to +18 -40 to +125 125µA Series TSOT $0.92 1.25V, Precision Micropower LDO Voltage Reference
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