Overview
The AD581KH is a high precision 10 V IC voltage reference produced by Analog Devices Inc. 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 AD581KH utilizes laser wafer trimming (LWT) to achieve high precision performance, making it suitable for applications requiring accurate voltage references without the need for external components.
Key Specifications
| Parameter | Min | Typ | Max |
|---|---|---|---|
| Output Voltage Tolerance (Error from Nominal 10,000 V Output) | ±10 mV | ±5 mV | |
| Output Voltage Change (Maximum Deviation from +25°C) | ±6.75 mV | ±2.25 mV | |
| Temperature Coefficient | 15 ppm/°C | 5 ppm/°C | |
| Line Regulation (15 V ≤ VIN ≤ 30 V) | 3.0 mV (0.002%) | 3.0 mV (0.002%) | |
| Load Regulation (0 ≤ IOUT ≤ 5 mA) | 200 μV/mA | 500 μV/mA | |
| Quiescent Current | 0.75 mA | 1.0 mA | 0.75 mA |
| Turn-on Settling Time to 0.1% | 200 μs | ||
| Noise (0.1 Hz to 10 Hz) | 40 μV (p-p) | ||
| Long-term Stability | 25 ppm/1000 hr | ||
| Operating Temperature Range | 0°C | +70°C | |
| Package | 3-Pin Metal Header Package (TO-5) |
Key Features
- High Precision: The AD581KH offers a precise 10.00 V output with low initial error and temperature coefficient, achieved through laser wafer trimming.
- No External Components Required: Full accuracy and stability are achieved without the need for external components.
- Low Power Consumption: The device has a typical quiescent current of 750 μA and can supply up to 10 mA through its output buffer amplifier.
- Advanced Band Gap Design: Provides long-term stability equivalent to selected Zener reference diodes.
- Flexible Operation: Can operate with an unregulated input voltage down to 13 V and with an external resistor, as low as 11.4 V.
- Hermetically Sealed Package: Packaged in a 3-pin TO-5 metal can, ensuring reliability and durability.
Applications
The AD581KH is recommended for use as a reference for 8-, 10-, or 12-bit digital-to-analog converters (DACs) and all types of analog-to-digital converters (ADCs) up to 14-bit accuracy. It is ideal for successive approximation or integrating ADC designs and can offer better performance than standard self-contained references.
Q & A
- What is the output voltage of the AD581KH?
The AD581KH provides a precise 10.00 V output. - What is the operating temperature range of the AD581KH?
The AD581KH operates from 0°C to +70°C. - Does the AD581KH require external components for full accuracy?
No, the AD581KH achieves full accuracy and stability without the need for external components. - What is the typical quiescent current of the AD581KH?
The typical quiescent current is 750 μA. - Can the AD581KH be used in high-temperature environments?
While the AD581KH is specified for 0°C to +70°C, other versions like the AD581S, T, and U are available for the -55°C to +125°C range. - What types of converters can the AD581KH be used with?
The AD581KH is suitable for 8-, 10-, or 12-bit DACs and up to 14-bit ADCs. - How does the AD581KH achieve its high precision?
The AD581KH uses laser wafer trimming to achieve high precision performance. - What is the package type of the AD581KH?
The AD581KH is packaged in a hermetically sealed 3-pin TO-5 metal can. - Can the AD581KH operate with low input voltages?
Yes, the device can operate with an unregulated input voltage down to 13 V and with an external resistor, as low as 11.4 V. - Is the AD581KH compliant with military standards?
Yes, versions of the AD581 are available that are compliant with MIL-STD-883.
