Overview
The REF1933AIDDCR is a low-drift, low-power, dual-output voltage reference produced by Texas Instruments. This component is designed to provide high accuracy and stability, making it suitable for a variety of applications requiring precise voltage references.
The REF1933AIDDCR offers two output voltages, 1.65V and 3.3V, with excellent temperature drift performance and high initial accuracy. This makes it an ideal choice for systems that require stable voltage references across a wide temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage Accuracy | -0.1% | 0.1% | ||
| Temperature Drift | 25 ppm/°C | from -40°C to 125°C | ||
| Quiescent Current | 430 µA | |||
| Output Voltages | 1.65V / 3.3V | |||
| Package Type | 5-Pin TSOT-23 |
Key Features
- Dual Output Voltages: Provides 1.65V and 3.3V output voltages, making it versatile for various applications.
- Low Temperature Drift: Excellent temperature drift performance of 25 ppm/°C from -40°C to 125°C.
- High Initial Accuracy: Output voltage accuracy of ±0.1%.
- Low Power Consumption: Quiescent current less than 430 µA.
- Compact Package: Available in a 5-Pin TSOT-23 package, suitable for space-constrained designs.
Applications
- Analog-to-Digital Converters (ADCs): Provides stable voltage references for ADC input ranges, especially useful in single-supply systems.
- Current Sensing: Used in low-side, bidirectional current-sensing applications to ensure accurate measurement.
- Medical Devices: Suitable for medical applications due to its high accuracy and stability.
- Industrial Automation: Ideal for systems requiring precise voltage references across a wide temperature range.
Q & A
- What are the output voltages of the REF1933AIDDCR?
The REF1933AIDDCR provides two output voltages: 1.65V and 3.3V.
- What is the temperature drift of the REF1933AIDDCR?
The temperature drift is 25 ppm/°C from -40°C to 125°C.
- What is the initial accuracy of the output voltages?
The initial accuracy is ±0.1%.
- How much quiescent current does the REF1933AIDDCR consume?
The quiescent current is less than 430 µA.
- In what package is the REF1933AIDDCR available?
The REF1933AIDDCR is available in a 5-Pin TSOT-23 package.
- What are some common applications of the REF1933AIDDCR?
Common applications include analog-to-digital converters, current sensing, medical devices, and industrial automation.
- Why is the REF1933AIDDCR suitable for medical applications?
It is suitable due to its high accuracy and stability, which are critical in medical devices.
- How does the REF1933AIDDCR perform in terms of voltage tracking over temperature?
The REF1933AIDDCR has minimal mismatch between the two outputs and both outputs track very well across temperature.
- Can the REF1933AIDDCR be used in single-supply systems?
Yes, it is particularly useful in single-supply systems to provide a stable voltage reference in the middle of the ADC input range.
- What is the significance of the low drift feature in the REF1933AIDDCR?
The low drift feature ensures that the output voltage remains stable over a wide temperature range, which is crucial for maintaining accuracy in various applications.
