Overview
The ADR292GRZ-REEL7, produced by Analog Devices Inc., is a low noise, micropower precision voltage reference. 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 from supplies as low as 2.8 V for the ADR291, and specifically provides an output voltage of 4.096 V for the ADR292. The ADR292 is ideal for applications requiring high accuracy, low noise, and low power consumption, making it suitable for battery-powered instrumentation and other low-power devices.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | IOUT = 0 mA | 4.093 | 4.096 | 4.099 | V |
| Initial Accuracy | VOERR | E/F Grades | ±3 mV | |||
| Temperature Coefficient | E/F Grades | 5 ppm/°C | 20 ppm/°C | |||
| Line Regulation | ∆VOUT/∆VIN | VS = 4.5 V to 15 V, IOUT = 0 mA | 40 ppm/V | 200 ppm/V | ||
| Load Regulation | ∆VOUT/∆ILOAD | VS = 5.0 V, IOUT = 0 mA to 5 mA | 20 ppm/mA | 200 ppm/mA | ||
| Supply Current | IS | TA = 25°C | 10 μA | 15 μA | 18 μA | |
| Thermal Hysteresis | VOUT-HYS | 50 ppm | ||||
| Supply Voltage | VS | 18 V | ||||
| Operating Temperature Range | TA | -40°C | +125°C |
Key Features
- Low Noise and High Accuracy: The ADR292 features low voltage noise output, one quarter that of traditional band gap references, and high accuracy with initial output accuracies of ±3 mV, ±4 mV, and ±6 mV maximum.
- Micropower Consumption: The device has a low quiescent current of 12 μA, making it ideal for battery-powered instrumentation and low-power applications.
- Low Thermal Hysteresis and Drift: It offers very low and ultralinear temperature drift, low thermal hysteresis, and excellent long-term stability.
- Wide Operating Temperature Range: The ADR292 is specified over the extended industrial temperature range of −40°C to +125°C.
- Multiple Package Options: Available in 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
Applications
- Analog-to-Digital and Digital-to-Analog Converters: The ADR292 is well-suited for use with data converters due to its low supply voltage and high accuracy, making it compatible with converters like the AD7701.
- Low Power, Low Voltage Systems: Ideal for handheld, battery-operated equipment where low power consumption is critical.
- High Voltage Floating Current Source: Can be used in applications requiring a high voltage floating current source.
- Voltage Regulator for Portable Equipment: Suitable for voltage regulation in portable devices due to its low power and high accuracy characteristics.
Q & A
- What is the output voltage of the ADR292GRZ-REEL7?
The output voltage of the ADR292GRZ-REEL7 is 4.096 V.
- What is the typical quiescent current of the ADR292?
The typical quiescent current is 15 μA at 25°C.
- What are the available package options for the ADR292?
The ADR292 is available in 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
- What is the operating temperature range of the ADR292?
The operating temperature range is −40°C to +125°C.
- What are the key features of the XFET® reference circuit used in the ADR292?
The XFET® reference circuit offers low noise output, low and ultralinear temperature drift, low thermal hysteresis, and excellent long-term stability.
- Is the ADR292 suitable for battery-powered devices?
Yes, the ADR292 is ideal for battery-powered instrumentation due to its low power consumption and high accuracy.
- What are some common applications of the ADR292?
Common applications include analog-to-digital and digital-to-analog converters, low power systems, high voltage floating current sources, and voltage regulators for portable equipment.
- What is the line regulation of the ADR292?
The line regulation is typically 40 ppm/V to 200 ppm/V.
- What is the load regulation of the ADR292?
The load regulation is typically 20 ppm/mA to 200 ppm/mA.
- What is the maximum supply voltage for the ADR292?
The maximum supply voltage is 18 V.
