Overview
The REF3012AIDBZRG4 is a precision, low-power, low-dropout voltage reference from Texas Instruments. It is part of the REF30xx family, which is known for its high accuracy and excellent temperature drift performance. This component is packaged in a tiny 3-pin SOT-23 package, making it ideal for space-constrained and power-sensitive applications. The REF3012 operates with a quiescent current of 42 µA (typical) and does not require a load capacitor to be stable, which is beneficial for intrinsically safe and explosion-proof applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage (VOUT) | 1.2475 - 1.2525 | V |
| Initial Accuracy | 0.2% | |
| Output Voltage Noise (0.1 Hz to 10 Hz) | 14 μVPP | |
| Output Voltage Noise (10 Hz to 10 kHz) | 42 µVrms | |
| Line Regulation (1.8 V ≤ VIN ≤ 5.5 V) | 60 - 190 µV/V | |
| Supply Voltage Range | 1.8 V to 5.5 V | V |
| Operating Temperature Range | -40°C to 125°C | °C |
| Junction Temperature | -150°C | °C |
| Package Type | SOT-23-3 | |
| Quiescent Current (IQ) | 42 µA (Typical) | |
| Output Current | 25 mA | |
| Temperature Drift (0°C to 70°C) | 50 ppm/°C (Maximum) | |
| Temperature Drift (-40°C to +125°C) | 75 ppm/°C (Maximum) |
Key Features
- MicroSize Package: Available in a tiny 3-pin SOT-23 package, ideal for space-constrained applications.
- Low Dropout: Operates with supplies within 1 mV of output voltage under zero-load conditions.
- High Output Current: Capable of delivering up to 25 mA.
- High Accuracy: Initial accuracy of 0.2%.
- Low IQ: Quiescent current of 42 µA (typical).
- Excellent Temperature Drift Performance: 50 ppm/°C (maximum) from 0°C to 70°C and 75 ppm/°C (maximum) from -40°C to +125°C.
- No Load Capacitor Required: Stable operation without the need for a load capacitor.
Applications
- Temperature and Pressure Transmitters: Ideal for loop-powered industrial applications.
- Portable, Battery-Powered Equipment: Low power consumption makes it suitable for battery-powered devices.
- Data Acquisition Systems: High accuracy and low noise make it a good choice for data acquisition.
- Medical Equipment: Suitable for medical devices requiring high precision and low power consumption.
- Handheld Test Equipment: Compact size and low power consumption are beneficial for handheld test equipment.
Q & A
- What is the output voltage of the REF3012AIDBZRG4?
The output voltage of the REF3012AIDBZRG4 is 1.25 V with an initial accuracy of 0.2%.
- What is the typical quiescent current of the REF3012AIDBZRG4?
The typical quiescent current is 42 µA.
- What is the operating temperature range of the REF3012AIDBZRG4?
The operating temperature range is -40°C to 125°C.
- Does the REF3012AIDBZRG4 require a load capacitor to be stable?
No, the REF3012AIDBZRG4 does not require a load capacitor to be stable.
- What is the maximum output current of the REF3012AIDBZRG4?
The maximum output current is 25 mA.
- What is the temperature drift performance of the REF3012AIDBZRG4?
The temperature drift is 50 ppm/°C (maximum) from 0°C to 70°C and 75 ppm/°C (maximum) from -40°C to +125°C.
- What package type is the REF3012AIDBZRG4 available in?
The REF3012AIDBZRG4 is available in a 3-pin SOT-23 package.
- What are some common applications for the REF3012AIDBZRG4?
Common applications include temperature and pressure transmitters, portable battery-powered equipment, data acquisition systems, medical equipment, and handheld test equipment.
- What is the recommended supply bypass capacitor for the REF3012AIDBZRG4?
A supply bypass capacitor of 0.47 μF is always recommended.
- Can the REF3012AIDBZRG4 be used in intrinsically safe and explosion-proof applications?
