Overview
The REF5025A-Q1, produced by Texas Instruments, is a low-noise, very low drift, precision voltage reference device. This component is part of the REF50xxA-Q1 family, which is designed for high-precision applications requiring excellent initial voltage accuracy and minimal temperature drift. The REF5025A-Q1 is specifically configured to provide a stable output voltage of 2.5 V.
Qualified for automotive applications, this device is robust against line and load changes, making it ideal for use in high-precision data acquisition systems, ATE equipment, industrial process control, medical instrumentation, and optical control systems.
Key Specifications
| Parameter | Test Conditions | Min | |||
|---|---|---|---|---|---|
| Output Voltage (VOUT) | - | - | 2.5 | - | V |
| Output Voltage Temperature Drift | Over temperature | 3 | - | 8 | ppm/°C |
| Line Regulation (dVOUT/dVIN) | VIN = VOUT + 0.2 V | 0.1 | 1 | 1 | ppm/V |
| Load Regulation (dVOUT/dILOAD) | -10 mA < ILOAD < +10 mA | 20 | 30 | 50 | ppm/mA |
| Short-Circuit Current (ISC) | VOUT = 0 V | - | - | 25 | mA |
| Long-Term Stability | 0 to 1000 hours | - | - | 90 | ppm/1000 hr |
| Power Supply Voltage (VS) | - | - | - | 18 | V |
| Quiescent Current | Over temperature | - | - | 1.2 | mA |
| Temperature Range | - | -40 | - | 125 | °C |
| Thermal Resistance (RθJA) | - | - | - | 150 | °C/W |
Key Features
- Low Noise: The REF5025A-Q1 features low noise of 3 μVPP/V, making it suitable for high-precision applications.
- High Accuracy: The device offers high accuracy with a maximum deviation of 0.1% from the nominal output voltage.
- Low Temperature Drift: It has an excellent temperature drift of 3 ppm/°C to 8 ppm/°C, ensuring stable output over a wide temperature range.
- High Output Current: The device can source and sink up to ±10 mA of current.
- Excellent Long-Term Stability: Long-term stability is maintained with a drift of 5 ppm/1000 hours after the initial 1000 hours.
- TRIM/NR Pin: The TRIM/NR pin allows for ±15-mV adjustment of the output voltage and can be used to reduce noise by creating a low-pass filter.
- Automotive Qualified: The REF5025A-Q1 is qualified for automotive applications, ensuring reliability in harsh environments.
Applications
- 16-Bit Data Acquisition Systems: Ideal for high-precision data acquisition due to its low noise and drift characteristics.
- ATE Equipment: Suitable for automated test equipment requiring stable reference voltages.
- Industrial Process Control: Used in industrial control systems where precision and stability are crucial.
- Medical Instrumentation: Applied in medical devices that require high accuracy and low drift voltage references.
- Optical Control Systems: Utilized in optical control systems that demand precise voltage references.
- Precision Instrumentation: Employed in various precision instrumentation applications.
Q & A
- What is the output voltage of the REF5025A-Q1?
The output voltage of the REF5025A-Q1 is 2.5 V.
- What is the temperature drift of the REF5025A-Q1?
The temperature drift is 3 ppm/°C to 8 ppm/°C.
- What is the maximum output current of the REF5025A-Q1?
The device can source and sink up to ±10 mA of current.
- What is the long-term stability of the REF5025A-Q1?
The long-term stability is 5 ppm/1000 hours after the initial 1000 hours.
- Can the REF5025A-Q1 be used in automotive applications?
Yes, the REF5025A-Q1 is qualified for automotive applications.
- How can the output voltage of the REF5025A-Q1 be adjusted?
The output voltage can be adjusted using the TRIM/NR pin, allowing for a ±15-mV adjustment.
- What is the minimum supply voltage required for the REF5025A-Q1?
The minimum supply voltage is 2.7 V for VOUT ≤ 2.5 V.
- What is the thermal resistance of the REF5025A-Q1?
The thermal resistance (RθJA) is 150 °C/W.
- In what package is the REF5025A-Q1 available?
The device is available in an SO-8 package.
- What are some typical applications of the REF5025A-Q1?
Typical applications include 16-bit data acquisition systems, ATE equipment, industrial process control, medical instrumentation, and optical control systems.
