Overview
The AD580LH is a high-precision, 2.5 V IC voltage reference produced by Analog Devices Inc. This three-terminal, temperature-compensated, bandgap voltage reference is designed to provide a stable 2.5 V output for input voltages ranging from 4.5 V to 30 V. The AD580LH is notable for its advanced circuit design and the use of laser-wafer trimmed thin-film resistors, which ensure high accuracy and stability. It is particularly suitable for applications requiring a stable reference voltage, such as in 8-, 10-, and 12-bit D/A converters and digital panel meter applications.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Output Voltage Tolerance | ±10 | ±10 | ±10 | mV |
| Output Voltage Change (TMIN to TMAX) | 1.75 | 4.3 | 7 | mV |
| Line Regulation (7 V ≤ VIN ≤ 30 V) | 1.5 | 2 | 2 | mV |
| Line Regulation (4.5 V ≤ VIN ≤ 7 V) | 0.3 | 1 | 1 | mV |
| Load Regulation (∆I = 10 mA) | 10 | 10 | 10 | mV |
| Quiescent Current | 1.0 | 1.5 | 1.5 | mA |
| Noise (0.1 Hz to 10 Hz) | 8 | 8 | 8 | µV p-p |
| Long-term Stability | 250 | 250 | 250 | µV |
| Temperature Range (Specified) | 0 | 70 | °C | |
| Temperature Range (Operating) | -55 | 125 | °C | |
| Package | TO-52-3 |
Key Features
- High Precision Output: The AD580LH offers an initial tolerance of ±0.4% and a temperature stability better than 10 ppm/°C, ensuring high accuracy and stability.
- Wide Input Range: Operates with input voltages between 4.5 V and 30 V, making it suitable for systems with a single logic power supply.
- Low Quiescent Current: Maximum quiescent current of 1.5 mA, which is advantageous over classical Zener techniques.
- Regulated Output Voltage: Provides a stable 2.5 V output voltage without the need for external components.
- Advanced Circuit Design: Utilizes laser-wafer trimmed thin-film resistors to minimize output error.
Applications
- D/A Converters: Recommended as a stable reference for 8-, 10-, and 12-bit D/A converters that require an external reference.
- Digital Panel Meters: Ideal for digital panel meter applications due to its ability to operate with a single logic power supply.
- General Voltage Reference: Suitable for any application requiring a stable and precise voltage reference.
Q & A
- What is the output voltage of the AD580LH?
The AD580LH provides a fixed 2.5 V output voltage.
- What is the input voltage range for the AD580LH?
The AD580LH operates with input voltages between 4.5 V and 30 V.
- What is the temperature stability of the AD580LH?
The AD580LH has a temperature stability better than 10 ppm/°C.
- What is the quiescent current of the AD580LH?
The maximum quiescent current of the AD580LH is 1.5 mA.
- What package type is the AD580LH available in?
The AD580LH is available in a TO-52-3 package.
- Is the AD580LH suitable for high-temperature applications?
Yes, the AD580LH is specified for operation over the temperature range of 0°C to +70°C, and some versions are specified for –55°C to +125°C.
- What are the key applications of the AD580LH?
The AD580LH is recommended for D/A converters, digital panel meters, and any application requiring a stable voltage reference.
- How does the AD580LH achieve its high precision?
The AD580LH achieves its high precision through advanced circuit design and the use of laser-wafer trimmed thin-film resistors.
- Does the AD580LH require external components for operation?
No, the AD580LH provides a regulated output voltage without the need for external components.
- What is the long-term stability of the AD580LH?
The AD580LH has a long-term stability better than 250 µV.
