Overview
The ADR291GR-REEL7 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. It is designed to provide a stable and precise voltage output, making it suitable for a variety of applications requiring high accuracy and low noise.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | IOUT = 0 mA | 2.498 | 2.500 | 2.502 | V |
| Initial Accuracy | VOERR | IOUT = 0 mA | -3 mV | - | 3 mV | - |
| Supply Voltage Range | VS | - | 2.7 V | - | 15 V | V |
| Quiescent Current | IS | TA = 25°C | 9 μA | 12 μA | 15 μA | μA |
| Temperature Coefficient | TCVOUT | IOUT = 0 mA | 3 ppm/°C | 10 ppm/°C | 30 ppm/°C | ppm/°C |
| Noise Voltage | eN | 0.1 Hz to 10 Hz | - | 6 μV p-p | - | μV p-p |
| Operating Temperature Range | TA | - | -40°C | - | 125°C | °C |
| Package | - | - | - | SOIC N | - | - |
| Pin Count | - | - | - | 8 | - | - |
Key Features
- Low Noise and High Accuracy: The ADR291GR-REEL7 features low noise output, with a noise voltage of 6 μV p-p in the 0.1 Hz to 10 Hz range, and high accuracy with initial output voltage accuracy of ±2 mV.
- Micropower Consumption: It has a low quiescent current of 12 μA maximum, making it ideal for battery-powered and low-power applications.
- Wide Supply Voltage Range: The component operates over a supply voltage range of 2.7 V to 15 V, providing flexibility in various system designs.
- High Output Current Capability: The ADR291GR-REEL7 can supply up to 5 mA of output current, supporting a range of load conditions.
- Stable Temperature Coefficient: The temperature coefficient is as low as 3 ppm/°C to 30 ppm/°C, ensuring stable output voltage across different temperatures.
Applications
- Portable Instrumentation: Suitable for handheld, battery-operated equipment due to its low power consumption and high accuracy.
- Precision Reference for Data Converters: Ideal for use with analog-to-digital and digital-to-analog converters, especially those requiring low supply voltages.
- Solar Powered Applications: Its low power consumption makes it suitable for solar-powered systems where energy efficiency is crucial.
- Loop-Current Powered Instruments: Can be used in loop-current powered instruments where precision and low noise are essential).
- Voltage Regulator for Portable Equipment: Can serve as a voltage regulator in portable equipment, ensuring stable and accurate voltage output).
Q & A
- What is the output voltage of the ADR291GR-REEL7?
The output voltage of the ADR291GR-REEL7 is 2.5 V with an initial accuracy of ±2 mV).
- What is the quiescent current of the ADR291GR-REEL7?
The quiescent current is 12 μA maximum).
- What is the operating temperature range of the ADR291GR-REEL7?
The operating temperature range is -40°C to 125°C).
- What is the noise voltage of the ADR291GR-REEL7?
The noise voltage is 6 μV p-p in the 0.1 Hz to 10 Hz range).
- What is the package type of the ADR291GR-REEL7?
The package type is SOIC N with 8 pins).
- What are some common applications of the ADR291GR-REEL7?
Common applications include portable instrumentation, precision reference for data converters, solar powered applications, loop-current powered instruments, and voltage regulators for portable equipment).
- How does the XFET® reference circuit improve performance?
The XFET® reference circuit offers lower noise and a lower temperature coefficient compared to traditional bandgap and Zener-based references, resulting in higher accuracy and stability).
- What is the maximum output current of the ADR291GR-REEL7?
The maximum output current is 5 mA).
- Is the ADR291GR-REEL7 RoHS compliant?
Yes, the ADR291GR-REEL7 is RoHS compliant).
- What is the supply voltage range of the ADR291GR-REEL7?
The supply voltage range is from 2.7 V to 15 V).
