Overview
The ADR292GRUZ is a low noise, micropower precision voltage reference produced by Analog Devices Inc. This device utilizes the XFET® (eXtra implanted junction FET) reference circuit, which offers significant performance improvements over traditional band gap and buried Zener-based references. The ADR292 is part of the ADR291/ADR292 family, providing stable and accurate output voltages with low power consumption, making it ideal for battery-powered instrumentation and various low-power applications.
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 | IOUT = 0 mA | -3 | - | 3 | mV |
| Temperature Coefficient | TCVOUT | IOUT = 0 mA | 3 | - | 10 | ppm/°C |
| Line Regulation | ΔVOUT/ΔVIN | VS = 4.5 V to 15 V, IOUT = 0 mA | 35 | - | 125 | ppm/V |
| Load Regulation | ΔVOUT/ΔILOAD | VS = 5.0 V, IOUT = 0 mA to 5 mA | 20 | - | 125 | ppm/mA |
| Supply Current | IS | TA = 25°C | 9 | - | 12 | μA |
| Thermal Hysteresis | VOUT-HYS | - | - | 50 | ppm |
Key Features
- Low noise and micropower operation, with a quiescent current of only 12 μA maximum.
- XFET reference circuit providing significant performance improvements over traditional band gap and buried Zener-based references.
- Very low and ultralinear temperature drift, low thermal hysteresis, and excellent long-term stability.
- Available in three electrical grades offering initial output accuracies of ±3 mV, ±4 mV, and ±6 mV maximum.
- Temperature coefficients of 8 ppm/°C, 15 ppm/°C, and 25 ppm/°C maximum.
- Line and load regulation of typically 30 ppm/V and 30 ppm/mA, respectively.
- Specified over the extended industrial temperature range of –40°C to +125°C.
- Available in 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
Applications
- Ideal for use with analog-to-digital and digital-to-analog converters due to its low supply voltage and high accuracy.
- Suitable for low power applications such as handheld, battery-operated equipment.
- Can be used as a reference for data converters like the AD7701, a 16-bit ADC with on-chip digital filtering.
- Applicable in voltage regulators for portable equipment, providing stable and low noise output voltage.
- Useful in high voltage floating current source and Kelvin connection applications.
Q & A
- What is the output voltage of the ADR292GRUZ?
The output voltage of the ADR292GRUZ is 4.096 V.
- What is the quiescent current of the ADR292GRUZ?
The quiescent current is only 12 μA maximum.
- What are the temperature coefficients available for the ADR292GRUZ?
The temperature coefficients are 8 ppm/°C, 15 ppm/°C, and 25 ppm/°C maximum.
- What are the typical line and load regulations of the ADR292GRUZ?
The typical line regulation is 30 ppm/V and the typical load regulation is 30 ppm/mA.
- What are the available packages for the ADR292GRUZ?
The device is available in 8-lead SOIC, 8-lead TSSOP, and 3-lead TO-92 packages.
- What is the operating temperature range of the ADR292GRUZ?
The device is specified over the extended industrial temperature range of –40°C to +125°C.
- Is the ADR292GRUZ suitable for battery-powered devices?
- Can the ADR292GRUZ be used with data converters?
- What are some precautions when using the ADR292GRUZ in voltage regulators?
Precautions should be taken in the selection of output capacitors to ensure stability, avoiding high ESR (effective series resistance).
- What is the thermal hysteresis of the ADR292GRUZ?
The thermal hysteresis is 50 ppm.
