Overview
The REF2025AIDDCR from Texas Instruments is a low-drift, low-power, dual-output voltage reference IC designed for use in single-supply systems. This component provides two stable voltage outputs: VREF at 2.5V and VBIAS at 1.25V, which are particularly useful for biasing input bipolar signals in analog-to-digital converter (ADC) applications. The REF2025AIDDCR is known for its excellent temperature drift performance, high initial accuracy, and low quiescent current, making it suitable for a variety of precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.52 V to 5.5 V | V |
| Reference Voltage (VREF) | 2.5 V | V |
| Bias Voltage (VBIAS) | 1.25 V | V |
| Temperature Drift | 8 ppm/°C (max) | ppm/°C |
| Initial Accuracy | ±0.05% (max) | % |
| Quiescent Current | 360 µA (active), 3.3 µA (shutdown) | µA |
| Output Current | ±20 mA | mA |
| Dropout Voltage | 10 mV | mV |
| Line Regulation | 3 ppm/V | ppm/V |
| Load Regulation | 8 ppm/mA | ppm/mA |
| Package Type | SOT23-5 | |
| Operating Temperature Range | –40°C to 125°C | °C |
Key Features
- Two outputs: VREF and VBIAS, convenient for 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.
- Matte-Sn version for improved corrosion resistance in harsh environments.
Applications
- Electricity meter.
- Analog input and output modules.
- Servo drive control module.
- Circuit breaker (ACB, MCCB, VCB).
- Clinical digital thermometer.
- Lab and field instrumentation.
- Battery testing.
- Low-side, current-sensing applications.
Q & A
- What are the output voltages of the REF2025AIDDCR?
The REF2025AIDDCR provides two output voltages: VREF at 2.5V and VBIAS at 1.25V. - What is the temperature drift performance of the REF2025AIDDCR?
The temperature drift is 8 ppm/°C (maximum) from –40°C to 125°C. - What is the initial accuracy of the REF2025AIDDCR?
The initial accuracy is ±0.05% (maximum). - What is the quiescent current of the REF2025AIDDCR?
The quiescent current is 360 µA in active mode and 3.3 µA in shutdown mode. - What is the maximum output current of the REF2025AIDDCR?
The maximum output current is ±20 mA. - What is the dropout voltage of the REF2025AIDDCR?
The dropout voltage is 10 mV. - What is the line regulation of the REF2025AIDDCR?
The line regulation is 3 ppm/V. - What is the load regulation of the REF2025AIDDCR?
The load regulation is 8 ppm/mA. - What package type is the REF2025AIDDCR available in?
The REF2025AIDDCR is available in a SOT23-5 package. - What is the operating temperature range of the REF2025AIDDCR?
The operating temperature range is –40°C to 125°C. - Does the REF2025AIDDCR have any special versions for harsh environments?
Yes, the Matte-Sn version (REF2025AISDDCR) offers improved corrosion resistance in harsh environments.
