Overview
The REF3125AIDBZT is a precision, low power, low dropout series voltage reference from Texas Instruments. It is part of the REF31xx family, which is known for its high accuracy and stability. This component is packaged in a tiny 3-pin SOT-23 package, making it ideal for space-constrained and battery-powered applications. The REF3125AIDBZT provides a stable 2.5V output voltage with excellent temperature drift performance and low quiescent current, making it suitable for a variety of applications requiring precise voltage referencing.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Output Voltage (VOUT) | 2.495 | 2.5 | 2.505 | V |
| Initial Accuracy | -0.2% | 0.2% | % | |
| Temperature Drift (0°C to 70°C) | 5 ppm/°C | 15 ppm/°C | ppm/°C | |
| Temperature Drift (-40°C to 125°C) | 20 ppm/°C | ppm/°C | ||
| Quiescent Current (IQ) | 100 µA | 115 µA | µA | |
| Load Current (ILOAD) | 25 mA | mA | ||
| Operating Temperature (TA) | -40°C | 125°C | °C | |
| Input Voltage (VIN) | VOUT + 0.05 V | 5.5 V | V |
Key Features
- Precision output voltage with initial accuracy of ±0.2%.
- Low temperature drift: 15 ppm/°C (max) from 0°C to 70°C and 20 ppm/°C (max) from -40°C to 125°C.
- Low quiescent current: 100 µA (typical) and 115 µA (maximum).
- No load capacitor required, stable with any capacitive load.
- Able to sink or source up to 10 mA of output current.
- Operates on supplies down to 5 mV above the output voltage.
- Compact 3-pin SOT-23 package.
Applications
- Portable and battery-powered equipment.
- Data acquisition systems.
- Medical equipment.
- Hand-held test equipment.
- Split-supply applications using the REF3125 with an operational amplifier like the OPA703.
Q & A
- What is the output voltage of the REF3125AIDBZT?
The output voltage of the REF3125AIDBZT is 2.5V with an initial accuracy of ±0.2%.
- What is the temperature drift of the REF3125AIDBZT?
The temperature drift is 15 ppm/°C (max) from 0°C to 70°C and 20 ppm/°C (max) from -40°C to 125°C.
- What is the quiescent current of the REF3125AIDBZT?
The quiescent current is 100 µA (typical) and 115 µA (maximum).
- Does the REF3125AIDBZT require a load capacitor?
No, the REF3125AIDBZT does not require a load capacitor and is stable with any capacitive load.
- What is the maximum load current the REF3125AIDBZT can handle?
The REF3125AIDBZT can sink or source up to 10 mA of output current.
- What is the operating temperature range of the REF3125AIDBZT?
The operating temperature range is from -40°C to 125°C.
- What is the input voltage range for the REF3125AIDBZT?
The input voltage range is from VOUT + 0.05 V to 5.5 V.
- In what package is the REF3125AIDBZT available?
The REF3125AIDBZT is available in a 3-pin SOT-23 package.
- What are some common applications for the REF3125AIDBZT?
Common applications include portable and battery-powered equipment, data acquisition systems, medical equipment, and hand-held test equipment.
- Can the REF3125AIDBZT be used in split-supply applications?
Yes, the REF3125AIDBZT can be used in split-supply applications when combined with an operational amplifier like the OPA703.
