Overview
The REF2041AIDDCR from Texas Instruments is a low-drift, low-power, dual-output voltage reference designed for high-precision applications. This component provides two outputs: a reference voltage (VREF) and a half-reference voltage (VREF/2), making it convenient for use in single-supply systems. It is particularly useful in applications requiring stable voltage references, such as analog-to-digital converter (ADC) input range biasing for bipolar signals.
The device is known for its excellent temperature drift performance, high initial accuracy, and low quiescent current, making it suitable for a variety of industrial and precision applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage Accuracy | -0.05% | 0.05% | ||
| Temperature Drift | 8 ppm/°C | -40°C to 125°C | ||
| VREF and VBIAS Tracking Over Temperature | 6 ppm/°C | -40°C to 85°C | ||
| VREF and VBIAS Tracking Over Temperature | 7 ppm/°C | -40°C to 125°C | ||
| Package | SOT23-5 | |||
| Dropout Voltage | 10 mV | 20 mV | ||
| Output Current | ±20 mA | |||
| Quiescent Current | 360 µA | 430 µA | ||
| Line Regulation | 3 ppm/V | |||
| Load Regulation | 8 ppm/mA |
Key Features
- Dual outputs: VREF and VREF/2 for convenient use in single-supply systems.
- Excellent temperature drift performance: 8 ppm/°C (maximum) from -40°C to 125°C.
- High initial accuracy: ±0.05% (maximum).
- VREF and VBIAS tracking over temperature: 6 ppm/°C (maximum) from -40°C to 85°C and 7 ppm/°C (maximum) 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.
- Line regulation: 3 ppm/V.
- Load regulation: 8 ppm/mA.
- Matt-Sn version for improved corrosion resistance in harsh environments.
Applications
- Electricity meter.
- Analog input module.
- Analog output module.
- Servo drive control module.
- Circuit breaker (ACB, MCCB, VCB).
- Clinical digital thermometer.
- Lab and field instrumentation.
- Battery test.
The REF2041AIDDCR is particularly useful in applications requiring stable voltage references, such as biasing input bipolar signals in analog-to-digital converters (ADCs) with only a positive supply voltage.
Q & A
- What is the primary function of the REF2041AIDDCR?
The REF2041AIDDCR is a dual-output voltage reference providing a reference voltage (VREF) and a half-reference voltage (VREF/2) for use in single-supply systems.
- What is the temperature drift performance of the REF2041AIDDCR?
The temperature drift performance is 8 ppm/°C (maximum) from -40°C to 125°C.
- What is the initial accuracy of the REF2041AIDDCR?
The initial accuracy is ±0.05% (maximum).
- How do VREF and VBIAS track over temperature?
VREF and VBIAS track each other with a precision of 6 ppm/°C (maximum) from -40°C to 85°C and 7 ppm/°C (maximum) from -40°C to 125°C.
- What is the package type of the REF2041AIDDCR?
The package type is SOT23-5.
- What is the dropout voltage of the REF2041AIDDCR?
The dropout voltage is 10 mV.
- What is the maximum output current of the REF2041AIDDCR?
The maximum output current is ±20 mA.
- What is the quiescent current of the REF2041AIDDCR?
The quiescent current is 360 µA.
- What are some common applications of the REF2041AIDDCR?
Common applications include electricity meters, analog input and output modules, servo drive control modules, circuit breakers, clinical digital thermometers, lab and field instrumentation, and battery tests.
- Why is the REF2041AIDDCR suitable for high-precision industrial applications?
The REF2041AIDDCR is suitable due to its excellent temperature drift performance, high initial accuracy, low quiescent current, and low noise levels.
