Overview
The REF3125AIDBZTG4 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 over a wide temperature range. This component is packaged in a tiny 3-pin SOT-23 package, making it ideal for portable and battery-powered applications. The REF3125AIDBZTG4 features a fixed output voltage of 2.5V and is designed to operate with a low quiescent current of 100 μA typical, contributing to its energy efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 2.5 | V |
| Initial Accuracy | ±0.2% | |
| Temperature Drift | 15 ppm/°C (0°C to 70°C), 20 ppm/°C (–40°C to +125°C) | |
| Quiescent Current | 100 μA (typical), 115 μA (maximum) | |
| Dropout Voltage | 5 mV above output voltage (unloaded) | |
| Load Current | Up to 10 mA | |
| Operating Temperature Range | –40°C to +125°C | |
| Package | 3-pin SOT-23 | |
| Junction-to-Ambient Thermal Resistance | 292.9 °C/W |
Key Features
- Precision output voltage with high accuracy and low drift.
- Low power consumption with a typical quiescent current of 100 μA.
- Low dropout voltage, allowing operation with a supply voltage just 5 mV above the output voltage in an unloaded condition.
- Stable with any capacitive load and can sink or source up to 10 mA of output current.
- No load capacitor required.
- Wide operating temperature range of –40°C to +125°C.
- Compact 3-pin SOT-23 package suitable for space-constrained applications.
Applications
- Portable and battery-powered equipment.
- Data acquisition systems, providing stable voltage references for maintaining accuracy.
- Medical equipment, where precise voltage references are crucial.
- Hand-held test equipment, benefiting from the component's low power and compact size.
Q & A
- What is the output voltage of the REF3125AIDBZTG4? The output voltage is 2.5V.
- What is the typical quiescent current of the REF3125AIDBZTG4? The typical quiescent current is 100 μA.
- What is the temperature drift of the REF3125AIDBZTG4? The temperature drift is 15 ppm/°C from 0°C to 70°C and 20 ppm/°C from –40°C to +125°C.
- What is the maximum load current the REF3125AIDBZTG4 can handle? The REF3125AIDBZTG4 can handle up to 10 mA of load current.
- Does the REF3125AIDBZTG4 require a load capacitor? No, the REF3125AIDBZTG4 does not require a load capacitor but is stable with any capacitive load.
- What is the operating temperature range of the REF3125AIDBZTG4? The operating temperature range is –40°C to +125°C.
- In what package is the REF3125AIDBZTG4 available? The REF3125AIDBZTG4 is available in a 3-pin SOT-23 package.
- What are some typical applications of the REF3125AIDBZTG4? Typical applications include portable and battery-powered equipment, data acquisition systems, medical equipment, and hand-held test equipment.
- How much dropout voltage is required for the REF3125AIDBZTG4 in an unloaded condition? The dropout voltage is just 5 mV above the output voltage in an unloaded condition.
- Can the REF3125AIDBZTG4 be used in split-supply applications? Yes, the REF3125AIDBZTG4 can be used in combination with other components like the OPA703 to provide positive and negative reference voltages.
