Overview
The REF1930AIDDCR is a high-precision voltage reference IC produced by Texas Instruments. This device is designed to provide stable reference voltages, making it ideal for applications requiring accurate voltage levels, particularly in single-supply systems. It features two outputs: a primary reference voltage (VREF) and a secondary voltage (VBIAS) that is half of the primary reference voltage. These outputs are highly accurate and stable over a wide temperature range, making the REF1930AIDDCR suitable for high-precision industrial and medical applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOT-23-THN (DDC), 5 pins |
| Operating Temperature Range | -40°C to 125°C |
| Output Voltage | 1.5 V, 3 V |
| Initial Accuracy | ±0.1% (max) |
| Temperature Coefficient | 25 ppm/°C (max) |
| VREF and VBIAS Tracking | 6 ppm/°C (max) from -40°C to 85°C, 7 ppm/°C (max) from -40°C to 125°C |
| Dropout Voltage | 10 mV |
| Output Current | ±20 mA |
| Quiescent Current | 360 µA |
| Line Regulation | 3 ppm/V |
| Load Regulation | 8 ppm/mA |
Key Features
- Two outputs: VREF and VREF/2 for convenient use in single-supply systems.
- Excellent temperature drift performance: 25 ppm/°C (max) from -40°C to 125°C.
- High initial accuracy: ±0.1% (max).
- VREF and VBIAS tracking over temperature: 6 ppm/°C (max) from -40°C to 85°C, 7 ppm/°C (max) from -40°C to 125°C.
- Microsize package: SOT23-5.
- Low dropout voltage: 10 mV.
- High output current: ±20 mA.
- Low quiescent current: 360 µA.
- Good line and load regulation: 3 ppm/V and 8 ppm/mA, respectively.
Applications
The REF1930AIDDCR is particularly useful in applications that require stable reference voltages, such as in analog-to-digital converters (ADCs) where a mid-scale voltage is needed to bias bipolar input signals. It is also suitable for high-precision industrial and medical applications due to its excellent temperature stability, low noise levels, and long-term stability. Additionally, its low dropout voltage makes it suitable for battery-operated systems.
Q & A
- What is the REF1930AIDDCR used for? The REF1930AIDDCR is used to provide stable reference voltages, particularly in single-supply systems and applications requiring accurate voltage levels.
- What are the output voltages of the REF1930AIDDCR? The output voltages are 1.5 V and 3 V.
- What is the initial accuracy of the REF1930AIDDCR? The initial accuracy is ±0.1% (max).
- What is the temperature coefficient of the REF1930AIDDCR? The temperature coefficient is 25 ppm/°C (max).
- What is the dropout voltage of the REF1930AIDDCR? The dropout voltage is 10 mV.
- What is the maximum output current of the REF1930AIDDCR? The maximum output current is ±20 mA.
- What is the quiescent current of the REF1930AIDDCR? The quiescent current is 360 µA.
- What is the operating temperature range of the REF1930AIDDCR? The operating temperature range is -40°C to 125°C.
- What package type does the REF1930AIDDCR come in? The REF1930AIDDCR comes in a SOT-23-THN (DDC) package with 5 pins.
- Is the REF1930AIDDCR suitable for battery-operated systems? Yes, due to its low dropout voltage, it is suitable for battery-operated systems.
