Overview
The ADR433ARMZ is a three-terminal voltage reference IC from Analog Devices Inc., designed to provide a precise and stable output voltage. It is part of the ADR430/ADR431/ADR433/ADR434/ADR435 series, which features low noise, high accuracy, and low temperature drift performance. This series utilizes Analog Devices' temperature drift curvature correction and extra implanted junction FET (XFET) technology to minimize voltage change vs. temperature nonlinearity.
The ADR433ARMZ operates at a lower current (800 μA) and lower supply voltage headroom (2 V) compared to buried Zener references, making it a low noise solution for 5 V systems. It is available in 8-lead MSOP and 8-lead narrow SOIC packages and is specified over the extended industrial temperature range of −40°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Output Voltage | 3.0 V |
| Initial Accuracy (max) | 0.05% |
| Temperature Coefficient | A grade: 10 ppm/°C, B grade: 3 ppm/°C |
| Line Regulation (max) | 20 ppm/V |
| Load Regulation (typ) | 15 ppm/mA |
| Supply Voltage Operating Range | 5.0 V to 18 V |
| Supply Voltage Headroom | 2 V |
| Output Current Source/Sink | 30 mA / −20 mA |
| Operating Temperature Range | −40°C to +125°C |
| Package | 8-lead MSOP, 8-lead narrow SOIC |
Key Features
- Ultralow noise: 3.5 µV p-p at 2.500 V output (0.1 Hz to 10.0 Hz)
- No external capacitor required
- High accuracy and low temperature drift performance
- Current sink and source capability: up to 30 mA source, up to −20 mA sink
- Trim terminal to adjust output voltage over a ±0.5% range
- Low operating current: 800 μA
- Wide operating temperature range: −40°C to +125°C
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 ADR433ARMZ?
The output voltage of the ADR433ARMZ is 3.0 V.
- What is the initial accuracy of the ADR433ARMZ?
The initial accuracy of the ADR433ARMZ is 0.05% maximum.
- What is the temperature coefficient of the ADR433ARMZ?
The temperature coefficient of the ADR433ARMZ is 10 ppm/°C for A grade and 3 ppm/°C for B grade.
- What is the line regulation of the ADR433ARMZ?
The line regulation of the ADR433ARMZ is 20 ppm/V.
- What is the load regulation of the ADR433ARMZ?
The load regulation of the ADR433ARMZ is 15 ppm/mA.
- What is the supply voltage operating range of the ADR433ARMZ?
The supply voltage operating range of the ADR433ARMZ is from 5.0 V to 18 V.
- What is the output current source/sink capability of the ADR433ARMZ?
The ADR433ARMZ can source up to 30 mA and sink up to −20 mA.
- What are the available packages for the ADR433ARMZ?
The ADR433ARMZ is available in 8-lead MSOP and 8-lead narrow SOIC packages.
- What is the operating temperature range of the ADR433ARMZ?
The operating temperature range of the ADR433ARMZ is from −40°C to +125°C.
- Does the ADR433ARMZ require an external capacitor?
No, the ADR433ARMZ does not require an external capacitor.
