Overview
The REF5020IDGKR, produced by Texas Instruments, is a high-precision voltage reference from the REF50xx family. This component is renowned for its ultra-low noise, low drift, and high accuracy, making it an excellent choice for high-precision data acquisition systems. The REF5020 is available in various grades, including enhanced, high, and standard grades, each offering different levels of precision and temperature stability.
Key Specifications
| Parameter | Enhanced Grade | High Grade | Standard Grade |
|---|---|---|---|
| Temperature Drift (maximum) | 2.5 ppm/°C | 3 ppm/°C | 8 ppm/°C |
| Initial Accuracy (maximum) | 0.025% | 0.05% | 0.1% |
| Noise | 0.5 µVPP/V | 3 µVPP/V | 3 µVPP/V |
| Long-term Stability | 22 ppm after first 1000 hours (SOIC-8) | 50 ppm after first 1000 hours (VSSOP-8) | 50 ppm after first 1000 hours (VSSOP-8) |
| Input Voltage Range | Up to 42 V | Up to 18 V | Up to 18 V |
| Output Current | ±10 mA | ±10 mA | ±10 mA |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C |
Key Features
- Low Noise and Drift: The REF5020 features very low noise (0.5 µVPP/V for enhanced grade) and low temperature drift (2.5 ppm/°C for enhanced grade), making it suitable for high-precision applications.
- High Accuracy: Offers high initial accuracy, with the enhanced grade providing up to 0.025% accuracy.
- Wide Input Voltage Range: The enhanced grade supports an input voltage range up to 42 V, allowing direct connection to batteries or field supplies.
- High Output Current: Capable of sourcing and sinking up to ±10 mA of current.
- Excellent Line and Load Regulation: Ensures stable output voltage across various input and load conditions.
- Long-term Stability: Exhibits excellent long-term stability with minimal drift over time.
Applications
- High-Precision Data Acquisition Systems: Ideal for applications requiring precise voltage references, such as in medical devices, scientific instruments, and industrial control systems.
- Instrumentation and Measurement: Used in precision measurement instruments where stable and accurate voltage references are crucial.
- Aerospace and Defense: Suitable for high-reliability applications in aerospace and defense due to its robust performance and stability.
- Automotive Systems: Can be used in automotive systems that require high precision and reliability, such as in advanced driver-assistance systems (ADAS).
Q & A
- What are the key grades of the REF5020?
The REF5020 is available in enhanced, high, and standard grades, each offering different levels of precision and temperature stability.
- What is the maximum temperature drift for the enhanced grade of the REF5020?
The maximum temperature drift for the enhanced grade is 2.5 ppm/°C.
- What is the initial accuracy of the enhanced grade REF5020?
The initial accuracy of the enhanced grade REF5020 is up to 0.025%.
- What is the noise level of the enhanced grade REF5020?
The noise level of the enhanced grade REF5020 is 0.5 µVPP/V.
- What is the operating temperature range of the REF5020?
The operating temperature range of the REF5020 is -40°C to 125°C.
- Can the REF5020 source and sink current?
- What are the typical applications of the REF5020?
The REF5020 is typically used in high-precision data acquisition systems, instrumentation, aerospace, defense, and automotive systems.
- What package options are available for the REF5020?
The REF5020 is available in 8-pin SOIC and VSSOP packages.
- How does the REF5020 ensure long-term stability?
The REF5020 exhibits excellent long-term stability with minimal drift over time, typically 22 ppm after the first 1000 hours for SOIC-8 packages.
- What is the input voltage range for the enhanced grade REF5020?
The input voltage range for the enhanced grade REF5020 is up to 42 V.
