Overview
The ADR431BRMZ-R7 is a precision voltage reference IC from Analog Devices Inc., part of the ADR430/ADR431/ADR433/ADR434/ADR435 series. This device is known for its low noise, high accuracy, and minimal temperature drift, making it an ideal choice for various precision voltage reference applications. The ADR431BRMZ-R7 operates using Analog Devices' XFET (extra implanted junction FET) technology, which ensures low noise and high stability over a wide temperature range.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 2.5 | V |
| Output Voltage Tolerance | ±0.04% | % |
| Output Current Capability | Up to 30 mA (source), up to -20 mA (sink) | mA |
| Supply Voltage Headroom | 2 V | V |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 8-Lead MSOP | - |
| Noise (0.1 Hz to 10.0 Hz) | 3.5 µV p-p at 2.5 V output | µV p-p |
| Temperature Coefficient | 3 ppm/°C maximum (B grade) | ppm/°C |
Key Features
- Low noise: 3.5 µV p-p at 2.5 V output in the 0.1 Hz to 10.0 Hz frequency range.
- No external capacitor required.
- Low temperature coefficient: 3 ppm/°C maximum for B grade.
- Current sink and source capability: up to 30 mA source and up to -20 mA sink.
- Trim terminal for adjusting output voltage over a ±0.5% range.
- Operates at lower current (800 µA) and lower supply voltage headroom (2 V) compared to buried Zener references.
- Available in 8-lead MSOP and 8-lead narrow SOIC packages.
Applications
The ADR431BRMZ-R7 is suitable for a variety of applications requiring precise voltage references, including:
- Precision analog circuits.
- Data acquisition systems.
- Industrial control systems.
- Aerospace and defense applications (ADR431-EP supports AQEC standard).
- Any system requiring low noise and high accuracy voltage references.
Q & A
- What is the output voltage of the ADR431BRMZ-R7?
The output voltage of the ADR431BRMZ-R7 is 2.5 V.
- What is the output voltage tolerance of the ADR431BRMZ-R7?
The output voltage tolerance is ±0.04%.
- What is the maximum output current capability of the ADR431BRMZ-R7?
The device can source up to 30 mA and sink up to -20 mA.
- What is the operating temperature range of the ADR431BRMZ-R7?
The operating temperature range is -40°C to +125°C.
- What package types are available for the ADR431BRMZ-R7?
The device is available in 8-lead MSOP and 8-lead narrow SOIC packages.
- Does the ADR431BRMZ-R7 require an external capacitor?
No, the ADR431BRMZ-R7 does not require an external capacitor.
- What is the noise performance of the ADR431BRMZ-R7?
The noise performance is 3.5 µV p-p at 2.5 V output in the 0.1 Hz to 10.0 Hz frequency range.
- What is the temperature coefficient of the ADR431BRMZ-R7?
The temperature coefficient is 3 ppm/°C maximum for B grade.
- Can the output voltage of the ADR431BRMZ-R7 be adjusted?
Yes, the output voltage can be adjusted over a ±0.5% range using the trim terminal.
- Is the ADR431BRMZ-R7 suitable for aerospace and defense applications?
Yes, the ADR431-EP version supports AQEC standard for aerospace and defense applications.
