Overview
The REF1112AIDBZTG4 is a precision shunt voltage reference produced by Texas Instruments. This device is designed for power- and space-sensitive applications, offering a stable 1.25V output voltage with a low temperature drift of 10 ppm/°C. It operates with a minimal quiescent current of 1 μA, making it highly efficient for various electronic systems. The REF1112 is available in a compact SOT-23-3 package, enhancing its suitability for applications where space is a critical factor.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Output Voltage (VREF) | 1.2475 | 1.2525 | V |
| Temperature Drift | 10 | ppm/°C | |
| Operating Temperature (TA) | -40 | 125 | °C |
| Reverse Current (IREF) | 0.0012 | 5 | mA |
| Junction-to-Ambient Thermal Resistance (RθJA) | 219 | °C/W | |
| Junction-to-Case (Top) Thermal Resistance (RθJC(top)) | 99 | °C/W | |
| Junction-to-Board Thermal Resistance (RθJB) | 79 | °C/W |
Key Features
- Precision Output Voltage: The REF1112 provides a stable output voltage of 1.25V with a tight tolerance.
- Low Temperature Drift: The device features a low temperature drift of 10 ppm/°C, ensuring stable performance across a wide temperature range.
- Low Quiescent Current: It operates with a minimal quiescent current of 1 μA, making it energy-efficient.
- Compact Package: Available in a SOT-23-3 package, ideal for space-constrained applications.
- External Component Requirements: Requires only an external resistor and capacitor for operation, simplifying the circuit design.
- Adjustable Voltage Reference: Can be configured with an OPA347 to provide adjustable reference voltages and higher current sinking capabilities.
Applications
- Analog-to-Digital Converters (ADCs): Useful for level shifting to achieve the full input range of ADCs.
- Stable Current Sources: Can be configured to provide a temperature-compensated current reference.
- Power-Sensitive Systems: Ideal for applications where low power consumption is critical.
- Space-Constrained Designs: Suitable for compact electronic systems due to its small SOT-23-3 package.
- General Voltage Reference Needs: Applicable in various circuits requiring a stable and precise voltage reference.
Q & A
- What is the output voltage of the REF1112AIDBZTG4?
The output voltage of the REF1112AIDBZTG4 is 1.25V.
- What is the temperature drift of the REF1112AIDBZTG4?
The temperature drift is 10 ppm/°C.
- What is the operating temperature range of the REF1112AIDBZTG4?
The operating temperature range is from -40°C to 125°C.
- What is the quiescent current of the REF1112AIDBZTG4?
The quiescent current is 1 μA.
- What package type is the REF1112AIDBZTG4 available in?
The device is available in a SOT-23-3 package.
- What external components are required for the REF1112AIDBZTG4 to operate?
An external resistor and capacitor are required for operation.
- Can the REF1112AIDBZTG4 be used to provide adjustable reference voltages?
Yes, it can be configured with an OPA347 to provide adjustable reference voltages.
- What are some common applications of the REF1112AIDBZTG4?
Common applications include ADCs, stable current sources, power-sensitive systems, and space-constrained designs.
- How does the REF1112AIDBZTG4 handle thermal management?
The device has specified thermal resistances (RθJA, RθJC, RθJB) to manage heat effectively.
- Is the REF1112AIDBZTG4 RoHS compliant?
Yes, the REF1112AIDBZTG4 is RoHS compliant.
