Overview
The ADR03BR, produced by Analog Devices Inc., is a precision 2.5 V voltage reference device. It is part of the ADR01, ADR02, ADR03, and ADR06 series, which are known for their high accuracy, high stability, and low power consumption. The ADR03BR is housed in an 8-lead SOIC package and is designed to be a drop-in replacement for the industry-standard REF03, with the additional feature of temperature monitoring.
The device operates over a wide supply voltage range and is suitable for general-purpose and space-constrained applications. It is also qualified for automotive applications when in the A grade 8-lead SOIC package.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VO | A and C grades | 2.495 | 2.500 | 2.505 | V |
| Initial Accuracy | VOERR | A and C grades | 5 mV | 0.2 % | ||
| Initial Accuracy | VOERR | B grades | 2.5 mV | 0.1 % | ||
| Temperature Coefficient | TCS | 3 ppm/°C | ||||
| Supply Current | ISUPPLY | TA = 25°C | 0.4 | 0.6 | 0.8 | mA |
| Temperature Range | TA | -40°C | +125°C | |||
| Short Circuit to GND | ISC | 30 mA | ||||
| Temperature Sensor Voltage Output | VTEMP | 550 mV | ||||
| Temperature Sensitivity | TCVTEMP | 1.96 mV/°C |
Key Features
- Ultracompact packages: Available in 5-lead SC70, 5-lead TSOT, and 8-lead SOIC packages, making them ideal for space-constrained applications.
- High Accuracy: Initial accuracy of ±0.1% for B grades and ±0.2% for A and C grades.
- Low Drift: Low temperature coefficient of 3 ppm/°C typical.
- Wide Operating Range: Operates from a supply voltage range of 4.5 V to 36.0 V (4.5 V to 26.0 V for ADR03WARZ).
- Low Power Consumption: Supply current as low as 0.4 mA.
- Temperature Monitoring: The TEMP pin can be used for temperature sensing and approximation with an external buffer and resistor network.
- TRIM Pin: Provided for fine adjustment of the output voltage.
- Automotive Qualified: A grade in 8-lead SOIC is qualified for automotive applications.
Applications
- Precision Data Acquisition Systems
- High Resolution Converters
- Industrial Process Control Systems
- Precision Instruments
- Auto Battery Monitoring
- PCMCIA Cards
Q & A
- What is the output voltage of the ADR03BR?
The output voltage of the ADR03BR is 2.5 V.
- What are the available package options for the ADR03BR?
The ADR03BR is available in 8-lead SOIC packages.
- What is the initial accuracy of the ADR03BR?
The initial accuracy of the ADR03BR is ±0.1% for B grades and ±0.2% for A and C grades.
- What is the temperature coefficient of the ADR03BR?
The temperature coefficient of the ADR03BR is 3 ppm/°C typical.
- What is the operating temperature range of the ADR03BR?
The operating temperature range of the ADR03BR is -40°C to +125°C.
- Can the ADR03BR be used for temperature sensing?
- Is the ADR03BR qualified for automotive applications?
- What is the supply current of the ADR03BR?
The supply current of the ADR03BR is as low as 0.4 mA.
- Can the output voltage of the ADR03BR be adjusted?
- What are some typical applications of the ADR03BR?
