AD581:  High Precision 10 V IC Reference

The AD581 is a three-terminal, temperature compensated, monolithic bandgap voltage reference which provides a precise 10.00 volt output from an unregulated input level from 12 to 30 volts. Laser ...More

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AD581:  High Precision 10 V IC Reference

Product Description

The AD581 is a three-terminal, temperature compensated, monolithic bandgap voltage reference which provides a precise 10.00 volt output from an unregulated input level from 12 to 30 volts. Laser Wafer Trimming (LWT) is used to trim both the initial error at +25°C as well as the temperature coefficient, which results in high precision performance previously available only in expensive hybrids or oven-regulated modules. The 5 mV initial error tolerance and 5 ppm/°C guaranteed temperature coefficient of the AD581L represent the best performance combination available in a monolithic voltage reference.

The bandgap circuit design used in the AD581 offers several advantages over classical Zener breakdown diode techniques. Most important, no external components are required to achieve full accuracy and stability of significance to low power systems. In addition, total supply current to the device, including the output buffer amplifier (which can supply up to 10 mA) is typically 750 µA. The long-term stability of the bandgap design is equivalent or superior to selected Zener reference diodes.

The AD581 is recommended for use as a reference for 8-, 10- or 12-bit D/A converters which require an external precision reference. The device is also ideal for all types of A/D converters up to 14-bit accuracy, either successive approximation or integrating designs, and in general can offer better performance than that provided by standard self-contained references.

The AD581J, K, and L are specified for operation from 0°C to +70°C; the AD581S, T, and U are specified for the -55°C to +125°C range. All grades are packaged in a hermetically sealed three-terminal TO-5 metal can.

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

Features

  • Laser Trimmed to High Accuracy: 10.000 Volts ±5 mV (L and U)
  • Trimmed Temperature Coefficient: 5 ppm/°C max, 0°C to +70°C (L) 10 ppm/°lC max, -55°C to +125°C (U)
  • Excellent Long-Term Stability: 25 ppm/1000 hrs. (Noncumulative)
  • Negative 10 Volt Reference Capability
  • Low Quiescent Current: 1.0 mA max
  • 10 mA Current Output Capability
  • 3-Terminal TO-5 Package
  • MIL-STD-883 Compliant Versions Available

Diagrams

AD581 Diagram
Functional Block Diagram for AD581

Specifications

Vout 10
Initial Accuracy (%) 0.05
Ref Out TC (ppm/C) 5ppm/C
Supply Voltage Range (V) +12 to +30
Supply Current (max) 1mA
Ref Output Current (mA) 10mA
0.1-10 Hz Noise (µV p-p) 40µV 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
ADR1581 1.25 0.12 50 4.5 n/a n/a, shunt ref -40 to +85 n/a Shunt SOT23 $0.61 1.25 V Micropower, Precision Shunt Voltage Reference
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
ADR827 1.25 0.4 15 8 5 +2.7V to +15V -40 to +125 400µA Series MSOP $1.11 Low Power, Precision Reference and Op Amp