Overview
The ADR293GRZ is a low noise, micropower precision voltage reference produced by Analog Devices Inc. It utilizes an XFET (eXtra implanted junction FET) reference circuit, offering significant performance improvements over traditional band gap and buried Zener-based references. This device is ideal for applications requiring a stable and accurate output voltage, particularly in battery-powered instrumentation due to its low quiescent current of 15 μA maximum. The ADR293GRZ operates over a supply range of 6.0 V to 15 V and is specified over the extended industrial temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Symbol | Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|---|
| Output Voltage | VOUT | IOUT = 0 mA | 4.990 | 5.000 | 5.010 | V |
| Initial Accuracy | IOUT = 0 mA | -10 | 0 | +10 | mV | |
| Initial Accuracy (%) | IOUT = 0 mA | 0.20 | % | |||
| Supply Current | 15 | μA | ||||
| Temperature Coefficient | TCVOUT | IOUT = 0 mA | 10 | 30 | ppm/°C | |
| Line Regulation | ΔVOUT/ΔVIN | 6.0 V to 15 V, IOUT = 0 mA | 50 | 200 | ppm/V | |
| Load Regulation | ΔVOUT/ΔILOAD | VS = 6.0 V, IOUT = 0 mA to 5 mA | 30 | 200 | ppm/mA | |
| Operating Temperature Range | -40 | +125 | °C | |||
| Package Type | 8-Lead SOIC, 8-Lead TSSOP |
Key Features
- Low noise and micropower operation, making it suitable for battery-powered instrumentation.
- XFET architecture 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.
- High accuracy with initial output accuracy of ±0.2% (G Grade).
- Low quiescent current of 15 μA maximum.
- Line regulation and load regulation of typically 70 ppm/V and 30 ppm/mA, respectively.
- Available in 8-lead SOIC and 8-lead TSSOP packages.
Applications
The ADR293GRZ is ideal for various applications requiring a stable and accurate voltage reference. These include:
- Battery-powered instrumentation due to its low power consumption.
- Portable equipment power supplies where low noise and high stability are crucial.
- Voltage regulators in systems that require fast recovery after current surges and low output noise.
- Defense and aerospace applications, with the ADR293-EP model supporting AQEC standards.
Q & A
- What is the output voltage of the ADR293GRZ? The output voltage of the ADR293GRZ is 5.0 V with an initial accuracy of ±0.2% (G Grade).
- What is the supply current of the ADR293GRZ? The supply current is 15 μA maximum.
- What is the temperature coefficient of the ADR293GRZ? The temperature coefficient is 30 ppm/°C maximum.
- What are the line and load regulations of the ADR293GRZ? The line regulation is typically 70 ppm/V, and the load regulation is typically 30 ppm/mA.
- In what temperature range does the ADR293GRZ operate? The ADR293GRZ operates over the extended industrial temperature range of –40°C to +125°C.
- What packages are available for the ADR293GRZ? The device is available in 8-lead SOIC and 8-lead TSSOP packages.
- Is the ADR293GRZ suitable for battery-powered devices? Yes, it is ideal for battery-powered instrumentation due to its low quiescent current.
- What are some typical applications of the ADR293GRZ? Typical applications include portable equipment power supplies, voltage regulators, and defense and aerospace applications.
- Does the ADR293GRZ support defense and aerospace applications? Yes, the ADR293-EP model supports defense and aerospace applications (AQEC standard).
- What is the XFET architecture in the ADR293GRZ? The XFET architecture provides significant performance improvements over traditional band gap and buried Zener-based references, including lower noise and better temperature stability.
