Overview
The AD581UH, produced by Analog Devices Inc., is a high-precision 10 V IC voltage reference. This monolithic, temperature-compensated device is designed to provide a precise 10.00 V output from an unregulated input voltage ranging from 12 V to 30 V. The AD581UH utilizes laser wafer trimming to achieve high precision, resulting in low initial error and temperature coefficient, making it suitable for applications requiring high accuracy and stability.
Key Specifications
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Output Voltage Tolerance (Error from Nominal 10,000 V Output) | ±30 mV | ±10 mV | ±5 mV |
| Output Voltage Change (Maximum Deviation from +25°C) | ±13.5 mV | ±6.75 mV | ±2.25 mV |
| Temperature Coefficient | 30 ppm/°C | 15 ppm/°C | 5 ppm/°C |
| Line Regulation (15 V ≤ VIN ≤ 30 V) | 3.0 mV (0.002%) | 3.0 mV (0.002%) | 3.0 mV (0.002%) |
| Load Regulation (0 ≤ IOUT ≤ 5 mA) | 200 μV/mA | 500 μV/mA | 200 μV/mA |
| Quiescent Current | 0.75 mA | 1.0 mA | 0.75 mA |
| Turn-on Settling Time to 0.1% | 200 μs | 200 μs | 200 μs |
| Noise (0.1 Hz to 10 Hz) | 40 μV (p-p) | 40 μV (p-p) | 40 μV (p-p) |
| Long-term Stability | 25 ppm/1000 hr | 25 ppm/1000 hr | 25 ppm/1000 hr |
| Operating Temperature Range | -55°C to +125°C | ||
| Package | Hermetically sealed 3-pin TO-5 metal can |
Key Features
- High Precision Output: The AD581UH provides a precise 10.00 V output with low initial error and temperature coefficient, achieved through laser wafer trimming.
- No External Components Required: The device does not require external components to achieve full accuracy and stability, making it suitable for low power systems.
- Low Power Consumption: The total supply current, including the output buffer amplifier, is typically 750 μA.
- Advanced Band Gap Design: The band gap circuit design offers better performance and stability compared to classical Zener breakdown diode techniques.
- Operational Flexibility: The AD581UH can operate with an unregulated input voltage down to 13 V and can be configured to provide a negative 10 V reference with an external resistor.
- Military and Industrial Grades: Available in versions compliant with MIL-STD-883 and specified for operation over a wide temperature range (-55°C to +125°C).
Applications
- Digital-to-Analog Converters (DACs): Recommended for use as a reference for 8-, 10-, or 12-bit DACs that require an external precision reference.
- Analog-to-Digital Converters (ADCs): Ideal for all types of ADCs up to 14-bit accuracy, including successive approximation and integrating designs.
- Precision High Current Supplies: Can be used in applications requiring high current precision supplies.
- Hybrid and Military Applications: Valuable for hybrid designers due to its ease of use, lack of required external trims, and high performance.
Q & A
- What is the output voltage of the AD581UH?
The AD581UH provides a precise 10.00 V output.
- What is the operating temperature range of the AD581UH?
The AD581UH is specified for operation from -55°C to +125°C.
- Does the AD581UH require external components for full accuracy?
No, the AD581UH does not require external components to achieve full accuracy and stability.
- What is the typical quiescent current of the AD581UH?
The typical quiescent current is 750 μA.
- Can the AD581UH be used in military applications?
Yes, the AD581UH is available in versions compliant with MIL-STD-883.
- What types of converters can the AD581UH be used with?
The AD581UH can be used with 8-, 10-, or 12-bit DACs and up to 14-bit ADCs.
- How does the AD581UH achieve its high precision?
The AD581UH achieves its high precision through laser wafer trimming of both initial accuracy and temperature coefficient.
- What is the package type of the AD581UH?
The AD581UH is packaged in a hermetically sealed 3-pin TO-5 metal can.
- Can the AD581UH operate with a low input voltage?
Yes, the AD581UH can operate with an unregulated input voltage down to 13 V and with an external resistor, as low as 11.4 V.
- What is the long-term stability of the AD581UH?
The long-term stability is 25 ppm/1000 hours.
