Overview
The ADR03ARZ is a precision 2.5 V voltage reference produced by Analog Devices Inc. This ultracompact device is part of the ADR01, ADR02, ADR03, and ADR06 series, which are known for their high accuracy, high stability, and low power consumption. The ADR03ARZ is housed in various packages, including 5-lead SC70 and TSOT, as well as an 8-lead SOIC version, making it suitable for general-purpose and space-constrained applications. It is also compatible with industry-standard REF03, offering a drop-in replacement with additional features like temperature monitoring.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | VO | 2.475 | 2.5 | 2.525 | V |
| Initial Accuracy | VOERR | -0.1% | - | 0.1% | % |
| Temperature Coefficient | - | - | 3 ppm/°C (B grade, 8-lead SOIC) | 10 ppm/°C (C grade, 8-lead SOIC) | ppm/°C |
| Supply Voltage Range | VIN | 4.5 V | - | 36 V | V |
| Line Regulation | ΔVO/ΔVIN | 7 ppm/V | - | 30 ppm/V | ppm/V |
| Load Regulation | ΔVO/ΔILOAD | 40 ppm/mA | - | 70 ppm/mA | ppm/mA |
| Quiescent Current | IIN | 0.65 mA | 1 mA | - | mA |
| Voltage Noise (0.1 Hz to 10 Hz) | eN | - | 20 μV p-p | - | μV p-p |
| Operating Temperature Range | TA | -40°C | - | 125°C | °C |
Key Features
- High Accuracy and Stability: The ADR03ARZ offers high accuracy and stability, making it suitable for precision applications.
- Low Power Consumption: The device has low quiescent current, which is beneficial for power-sensitive designs.
- Compact Packages: Available in 5-lead SC70, TSOT, and 8-lead SOIC packages, making it ideal for space-constrained applications.
- Wide Supply Voltage Range: Operates from 4.5 V to 36 V, providing flexibility in system design.
- Temperature Monitoring: Includes a TEMP pin for temperature sensing and approximation.
- TRIM Pin for Output Voltage Adjustment: Allows for fine adjustment of the output voltage.
- Automotive Qualification: A grade in 8-lead SOIC is qualified for automotive applications.
Applications
- Precision Data Acquisition Systems: Ideal for systems requiring stable and accurate voltage references.
- High Resolution Converters: Suitable for high-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
- Industrial Process Control Systems: Used in systems that require precise voltage references for control and measurement.
- Precision Instruments: Applicable in various precision instruments where stable voltage references are crucial.
- Auto Battery Monitoring: Can be used in automotive battery monitoring systems due to its automotive qualification.
- PCMCIA Cards: Suitable for use in PCMCIA cards and other compact electronic devices.
Q & A
- What is the output voltage of the ADR03ARZ?
The output voltage of the ADR03ARZ is 2.5 V with an initial accuracy of ±0.1%.
- What are the available packages for the ADR03ARZ?
The ADR03ARZ is available in 5-lead SC70, TSOT, and 8-lead SOIC packages.
- What is the supply voltage range for the ADR03ARZ?
The supply voltage range for the ADR03ARZ is from 4.5 V to 36 V.
- Is the ADR03ARZ qualified for automotive applications?
Yes, the A grade in 8-lead SOIC is qualified for automotive applications.
- Can the output voltage of the ADR03ARZ be adjusted?
Yes, the ADR03ARZ includes a TRIM pin for fine adjustment of the output voltage.
- What is the operating temperature range of the ADR03ARZ?
The operating temperature range of the ADR03ARZ is from -40°C to +125°C.
- Does the ADR03ARZ support temperature monitoring?
Yes, the ADR03ARZ includes a TEMP pin for temperature sensing and approximation.
- What are some typical applications of the ADR03ARZ?
The ADR03ARZ is typically used in precision data acquisition systems, high resolution converters, industrial process control systems, precision instruments, and auto battery monitoring.
- Is the ADR03ARZ compatible with other industry-standard voltage references?
Yes, the ADR03ARZ is component-level compatible with the REF03 and offers a drop-in replacement with additional features.
- What is the quiescent current of the ADR03ARZ?
The quiescent current of the ADR03ARZ is typically 1 mA with no load.
