Overview
The REF1112AIDBZR is a precision voltage reference device produced by Texas Instruments. It is designed for power and space-sensitive applications, offering a low-power alternative to larger voltage reference packages such as the REF1004 and LT1004. This two-terminal shunt reference operates with an extremely low current of 1μA and is housed in a compact SOT23-3 package. The device is specified to operate from –40°C to +85°C, with extended operation up to +125°C, making it suitable for a wide range of environmental conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 1.25V | V |
| Output Voltage Tolerance | ±0.2% | % |
| Low Output Noise (0.1Hz to 10Hz) | 25µVpp (typical) | µVpp |
| Operating Temperature Range | –40°C to +125°C | °C |
| Operating Current Range | 1.2µA to 5mA | µA/mA |
| Temperature Coefficient (0°C to +70°C) | 30ppm/°C (maximum) | ppm/°C |
| Temperature Coefficient (–40°C to +85°C) | 50ppm/°C (maximum) | ppm/°C |
| Package Type | SOT23-3 | - |
Key Features
- Small Package: The REF1112 is housed in a compact SOT23-3 package, making it ideal for space-sensitive designs.
- Fixed Reverse Breakdown Voltage: The device has a fixed reverse breakdown voltage of 1.25V.
- Low Operating Current: It operates with a very low current of 1μA, making it suitable for battery-powered and low-power applications.
- High Accuracy: The device features an output voltage tolerance of ±0.2% and a low temperature coefficient, ensuring high accuracy over a wide temperature range.
- Low Output Noise: The REF1112 has low output noise, typically 25µVpp from 0.1Hz to 10Hz.
Applications
- Battery-Powered Instruments: Ideal for devices that require low power consumption and high accuracy.
- Building Security Sensors: Suitable for security systems that need reliable and precise voltage references.
- Medical Equipment: Used in medical devices where low power and high accuracy are critical.
- Field Transmitters: Applicable in field transmitter systems that require stable voltage references.
- Calibrators: Useful in calibration equipment where precise voltage references are necessary.
Q & A
- What is the output voltage of the REF1112AIDBZR?
The output voltage of the REF1112AIDBZR is 1.25V.
- What is the operating current range of the REF1112AIDBZR?
The operating current range is from 1.2µA to 5mA.
- What is the temperature range for the REF1112AIDBZR?
The device is specified to operate from –40°C to +85°C, with extended operation up to +125°C.
- What is the output voltage tolerance of the REF1112AIDBZR?
The output voltage tolerance is ±0.2%.
- What is the typical low output noise of the REF1112AIDBZR?
The typical low output noise is 25µVpp from 0.1Hz to 10Hz.
- What package type is the REF1112AIDBZR available in?
The device is housed in a SOT23-3 package.
- What are some typical applications of the REF1112AIDBZR?
Typical applications include battery-powered instruments, building security sensors, medical equipment, field transmitters, and calibrators.
- How does the REF1112AIDBZR maintain stability under varying load conditions?
A load capacitor, typically 0.1μF, is recommended to maintain stability under varying load conditions.
- Can the REF1112AIDBZR be used in high-temperature environments?
Yes, the device can operate in temperatures ranging from –40°C to +125°C.
- How does the REF1112AIDBZR complement other Texas Instruments components?
The REF1112 complements other 1μA components from Texas Instruments, such as the OPA349 and TLV240x low-power operational amplifiers, and the TLV349x micropower voltage comparator.
