Overview
The ADR292ERZ is a low noise, micropower precision voltage reference produced by Analog Devices Inc. It utilizes the XFET® reference circuit, which offers significant performance improvements over traditional band gap and buried Zener-based references. This device is part of the ADR291/ADR292 family, known for its stable and accurate output voltages, low quiescent current, and excellent long-term stability. The ADR292ERZ is particularly suited for applications requiring a precise 4.096 V output voltage.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage (VOUT) | IOUT = 0 mA | 4.093 | 4.096 | 4.099 | V |
| Initial Accuracy (VOERR) | - | - | - | ±3 mV, ±4 mV, ±6 mV | mV |
| Temperature Coefficient | - | - | - | 8 ppm/°C, 15 ppm/°C, 25 ppm/°C | ppm/°C |
| Supply Current (IS) | TA = 25°C | - | 12 μA | 15 μA | μA |
| Line Regulation (∆VOUT/∆VIN) | 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 |
| Temperature Range | - | -40°C | - | +125°C | °C |
| Package Options | - | - | - | 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: 5 mA
- Excellent long-term stability and low thermal hysteresis
- Ultralinear temperature drift
- Available in three electrical grades with different initial output accuracies and temperature coefficients
Applications
The ADR292ERZ is ideally suited for various applications, including:
- Analog-to-digital and digital-to-analog converters: Due to its low supply voltage and high accuracy, it is well-suited for converters like the AD7701.
- Handheld, battery-operated equipment: Its low quiescent current and high accuracy make it ideal for low power applications.
- Voltage regulators for portable equipment: It provides a stable reference voltage for power management in portable devices.
- High voltage floating current sources and Kelvin connections: It can be used in precision measurement and control systems.
Q & A
- What is the output voltage of the ADR292ERZ? The output voltage of the ADR292ERZ is 4.096 V.
- What is the quiescent current of the ADR292ERZ? The quiescent current is 12 μA maximum.
- What are the available package options for the ADR292ERZ? The device is available in 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
- What is the temperature range for the ADR292ERZ? The device operates over the extended industrial temperature range of −40°C to +125°C.
- What are the key features of the XFET architecture used in the ADR292ERZ? The XFET architecture offers low noise, ultralinear temperature drift, low thermal hysteresis, and excellent long-term stability.
- What are some typical applications for the ADR292ERZ? Typical applications include analog-to-digital and digital-to-analog converters, handheld battery-operated equipment, and voltage regulators for portable equipment.
- How accurate is the output voltage of the ADR292ERZ? The initial output accuracy is ±3 mV, ±4 mV, or ±6 mV depending on the electrical grade.
- What is the line regulation of the ADR292ERZ? The line regulation is typically 30 ppm/V.
- What is the load regulation of the ADR292ERZ? The load regulation is typically 30 ppm/mA.
- Is the ADR292ERZ suitable for high precision measurement applications? Yes, it is suitable due to its low noise, high accuracy, and excellent long-term stability.
