Overview
The ADR291GRZ-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 band gap and buried Zener-based references. The ADR291 is designed to provide stable and accurate output voltages, making it ideal for various precision applications, particularly in battery-powered instrumentation.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (VOUT) | IOUT = 0 mA | 2.497 | 2.5 | 2.503 | V |
| Initial Accuracy (VOERR) | - | - | ±2 mV, ±3 mV, ±6 mV | - | mV |
| Temperature Coefficient | - | - | 8 ppm/°C, 15 ppm/°C, 25 ppm/°C | - | ppm/°C |
| Line Regulation (∆VOUT/∆VIN) | VS = 2.8 V to 15 V, IOUT = 0 mA | - | 30 ppm/V | - | ppm/V |
| Load Regulation (∆VOUT/∆ILOAD) | VS = 5.0 V, IOUT = 0 mA to 5 mA | - | 30 ppm/mA | - | ppm/mA |
| Supply Current (IS) | TA = 25°C | - | 12 μA | 15 μA | μA |
| Operating Temperature Range | - | -40°C | - | +125°C | °C |
| Package Types | - | - | 8-lead SOIC, 8-lead TSSOP, 3-lead TO-92 | - | - |
Key Features
- Low noise: 8 μV and 12 μV p-p (0.1 Hz to 10 Hz)
- Low quiescent current: 12 μA maximum
- High output current: up to 5 mA
- Very low and ultralinear temperature drift
- Low thermal hysteresis: 50 ppm
- Excellent long-term stability
- Extended industrial temperature range: −40°C to +125°C
- Available in 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages
Applications
- Battery-powered instrumentation
- Low power, low voltage references for data converters
- Voltage regulators for portable equipment
- High voltage floating current sources
- Kelvin connections in precision measurement systems
Q & A
- What is the output voltage of the ADR291GRZ-REEL?
The output voltage of the ADR291GRZ-REEL is 2.5 V.
- What is the quiescent current of the ADR291GRZ-REEL?
The quiescent current is 12 μA maximum.
- What are the available package types for the ADR291GRZ-REEL?
The component is available in 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
- What is the operating temperature range of the ADR291GRZ-REEL?
The operating temperature range is −40°C to +125°C.
- What are the key features of the XFET® reference circuit used in the ADR291GRZ-REEL?
The XFET® reference circuit offers low noise, very low and ultralinear temperature drift, low thermal hysteresis, and excellent long-term stability.
- What are some typical applications of the ADR291GRZ-REEL?
Typical applications include battery-powered instrumentation, low power references for data converters, and voltage regulators for portable equipment.
- What is the line regulation of the ADR291GRZ-REEL?
The line regulation is typically 30 ppm/V.
- What is the load regulation of the ADR291GRZ-REEL?
The load regulation is typically 30 ppm/mA.
- How does the ADR291GRZ-REEL perform in terms of noise?
The component has low noise, with 8 μV and 12 μV p-p (0.1 Hz to 10 Hz).
- What is the maximum output current of the ADR291GRZ-REEL?
The maximum output current is up to 5 mA.
