Overview
The ADR431BRZ-REEL7 is a high-precision voltage reference IC from Analog Devices Inc., part of the ADR431 series. This device utilizes XFET® technology, which minimizes voltage change vs. temperature nonlinearity, ensuring low noise, high accuracy, and low temperature drift performance. The ADR431BRZ-REEL7 operates at a lower current and supply voltage headroom compared to traditional buried Zener references, making it an ideal solution for various precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 2.5V ±0.04% | V |
| Initial Accuracy | ±1mV / ±0.04% | mV / % |
| Temperature Coefficient | 3 ppm/°C | ppm/°C |
| Input Voltage Range | 4.5V to 18V | V |
| Output Current | Up to 30mA source, up to -20mA sink | mA |
| Operating Supply Current | 800 µA | µA |
| Line Regulation | 20 ppm/V | ppm/V |
| Load Regulation | 15 ppm/mA | ppm/mA |
| Noise (0.1Hz to 10Hz) | 3.5 µV p-p | µV p-p |
| Turn-on Settling Time | 10 µs at CL = 0µF | µs |
| Package | 8-lead SOIC-N | |
| Operating Temperature Range | -40°C to +125°C | °C |
Key Features
- Ultralow noise XFET voltage reference with current sink and source capability.
- Wide temperature range from -40°C to +125°C.
- Wide operating range from 4.5V to 18V.
- No external capacitor required.
- Low noise (0.1Hz to 10Hz) of 3.5µV p-p.
- Trim terminal to adjust the output voltage over a ±0.5% range without compromising performance.
- Low operating supply current of 800µA.
Applications
- Precision data acquisition systems.
- High resolution data converters.
- Medical instruments.
- Industrial process control systems.
- Optical control circuits.
- Precision instruments.
Q & A
- What is the output voltage of the ADR431BRZ-REEL7?
The output voltage is 2.5V with an initial accuracy of ±0.04%.
- What is the temperature coefficient of the ADR431BRZ-REEL7?
The temperature coefficient is 3 ppm/°C.
- What is the input voltage range for the ADR431BRZ-REEL7?
The input voltage range is from 4.5V to 18V.
- How much output current can the ADR431BRZ-REEL7 source and sink?
The device can source up to 30mA and sink up to -20mA.
- Does the ADR431BRZ-REEL7 require an external capacitor?
No, it does not require an external capacitor.
- What is the noise level of the ADR431BRZ-REEL7 in the 0.1Hz to 10Hz range?
The noise level is 3.5µV p-p.
- What is the turn-on settling time of the ADR431BRZ-REEL7?
The turn-on settling time is 10µs at CL = 0µF.
- In what package is the ADR431BRZ-REEL7 available?
The device is available in an 8-lead SOIC-N package.
- What is the operating temperature range of the ADR431BRZ-REEL7?
The operating temperature range is from -40°C to +125°C.
- What are some typical applications of the ADR431BRZ-REEL7?
Typical applications include precision data acquisition systems, high resolution data converters, medical instruments, industrial process control systems, optical control circuits, and precision instruments.
