Overview
The ADR291GR-REEL is a low noise, micropower precision voltage reference produced by Analog Devices Inc. This component utilizes the XFET® reference circuit, which offers significant performance improvements over traditional bandgap and Zener-based references. The ADR291GR-REEL is designed to provide a stable and precise voltage source, making it ideal for various applications requiring high accuracy and reliability.
Key Specifications
| Parameter | Symbol | Conditions | Min | |||
|---|---|---|---|---|---|---|
| Nominal Output Voltage | VO | IOUT = 0 mA | 2.498 | 2.500 | 2.502 | V |
| Supply Current | IS | - | - | 12 µA | - | µA |
| Supply Range | VIN | - | 2.7 V | - | 15 V | V |
| Output Current | IOUT | - | - | 5 mA | - | mA |
| Temperature Coefficient | - | - | - | 25 ppm/°C | - | ppm/°C |
| Operating Temperature Range | TA | - | -40°C | - | 125°C | °C |
| Noise Voltage (0.1 Hz to 10 Hz) | eN | - | - | 8 µV p-p | - | µV p-p |
| Package | - | - | - | 8-lead SOIC | - | - |
Key Features
- Low Noise: The ADR291GR-REEL features low noise output, with a noise voltage of 8 µV p-p in the 0.1 Hz to 10 Hz range, making it suitable for high-precision applications.
- Micropower Consumption: With a supply current of only 12 µA, this component is ideal for battery-powered instrumentation and other low-power applications.
- High Accuracy: The device offers high initial accuracy, with a maximum deviation of ±2 mV from the nominal output voltage.
- Wide Operating Temperature Range: The ADR291GR-REEL operates over an extended industrial temperature range of -40°C to +125°C.
- High Output Current: It can supply up to 5 mA of output current, making it versatile for various circuit requirements.
- XFET® Reference Circuit: Utilizes the XFET® architecture, which provides significant performance improvements over traditional bandgap and Zener-based references, including lower noise and better temperature stability.
Applications
- Portable Instrumentation: Ideal for battery-powered devices due to its low power consumption.
- Precision Reference for 3 V and 5 V Systems: Suitable for use in systems requiring a stable reference voltage.
- A/D and D/A Converter Reference: Used in analog-to-digital and digital-to-analog converters to ensure accurate conversions.
- Solar Powered Applications: Its low power consumption makes it suitable for solar-powered systems.
- Loop-Current Powered Instruments: Can be used in instruments powered by loop currents due to its low power requirements.
Q & A
- What is the nominal output voltage of the ADR291GR-REEL?
The nominal output voltage of the ADR291GR-REEL is 2.5 V.
- What is the supply current of the ADR291GR-REEL?
The supply current is 12 µA.
- What is the operating temperature range of the ADR291GR-REEL?
The operating temperature range is -40°C to +125°C.
- What is the maximum output current of the ADR291GR-REEL?
The maximum output current is 5 mA.
- What type of reference circuit does the ADR291GR-REEL use?
The ADR291GR-REEL uses the XFET® reference circuit.
- What is the noise voltage of the ADR291GR-REEL in the 0.1 Hz to 10 Hz range?
The noise voltage is 8 µV p-p.
- What is the temperature coefficient of the ADR291GR-REEL?
The temperature coefficient is 25 ppm/°C.
- In what package is the ADR291GR-REEL available?
The ADR291GR-REEL is available in an 8-lead SOIC package.
- Is the ADR291GR-REEL RoHS compliant?
Yes, the ADR291GR-REEL is RoHS compliant.
- What are some common applications of the ADR291GR-REEL?
Common applications include portable instrumentation, precision reference for 3 V and 5 V systems, A/D and D/A converter reference, solar powered applications, and loop-current powered instruments.
