Overview
The AD580TH, produced by Analog Devices Inc., is a high-precision, 2.5 V IC voltage reference. 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. It is particularly noted for its low cost, advanced circuit design, and the use of laser-wafer trimmed thin-film resistors, which ensure high accuracy and stability.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Output Voltage Tolerance | ±10 | - | - | mV |
| Output Voltage Change (TMIN to TMAX) | - | - | 4.3 | mV |
| Temperature Stability | - | - | 10 | ppm/°C |
| Line Regulation (7 V ≤ VIN ≤ 30 V) | - | - | 2 | mV |
| Line Regulation (4.5 V ≤ VIN ≤ 7 V) | - | - | 1 | mV |
| Load Regulation (∆I = 10 mA) | - | - | 10 | mV |
| Quiescent Current | 1.0 | 1.5 | 1.5 | mA |
| Noise (0.1 Hz to 10 Hz) | - | - | 8 | µV p-p |
| Long-term Stability | - | - | 250 | µV |
| Operating Temperature Range | -55 | - | +125 | °C |
| Storage Temperature Range | -65 | - | +175 | °C |
| Package | - | - | TO-52 (Metal Can) | - |
Key Features
- High Precision: The AD580TH offers an initial tolerance of ±0.4% and a temperature stability better than 10 ppm/°C, ensuring high accuracy and reliability.
- Low Quiescent Current: With a maximum quiescent current of 1.5 mA, it is more efficient compared to classical Zener techniques.
- 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.
- Stable Output: Provides a stable 2.5 V output voltage without the need for external components.
- Extended Temperature Range: Specified for operation over the extended temperature range of –55°C to +125°C.
- Low Noise: Features low noise of 8 µV p-p in the 0.1 Hz to 10 Hz range.
Applications
The AD580TH is recommended for various applications, including:
- D/A Converters: Ideal for 8-, 10-, and 12-bit D/A converters that require an external reference.
- Digital Panel Meters: Suitable for digital panel meter applications where a single logic power supply is available.
- General Voltage Reference: Can be used as a stable voltage reference in a wide range of electronic systems.
Q & A
- What is the output voltage of the AD580TH?
The AD580TH provides a fixed 2.5 V output voltage. - What is the input voltage range for the AD580TH?
The input voltage range is between 4.5 V and 30 V. - What is the temperature stability of the AD580TH?
The temperature stability is better than 10 ppm/°C. - What is the maximum quiescent current of the AD580TH?
The maximum quiescent current is 1.5 mA. - What is the operating temperature range of the AD580TH?
The operating temperature range is –55°C to +125°C. - What package type is the AD580TH available in?
The AD580TH is available in a TO-52 (Metal Can) package. - Is the AD580TH suitable for digital panel meter applications?
Yes, it is suitable for digital panel meter applications, especially when only a single logic power supply is available. - What is the long-term stability of the AD580TH?
The long-term stability is better than 250 µV. - Does the AD580TH require external components for regulated output voltage?
No, it provides regulated output voltage without any external components. - What is the noise level of the AD580TH in the 0.1 Hz to 10 Hz range?
The noise level is 8 µV p-p.
