Overview
The REF02Z precision voltage reference, produced by Analog Devices Inc., is a high-accuracy voltage reference device designed to provide a stable +5V output. This device is part of the REF01/REF02/REF03 series, known for their minimal change in response to variations in supply voltage, ambient temperature, or load conditions. The REF02Z is suitable for a wide range of applications, including precision data systems, high-resolution converters, industrial process control systems, and military and aerospace applications.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VO | A and E grades | 4.985 | 5.000 | 5.015 | V |
| H grade and nongraded | 4.975 | 5.000 | 5.025 | V | ||
| C grade | 4.950 | 5.000 | 5.050 | V | ||
| Output Adjustment Range | ΔVTRIM | A, E, H grades and nongraded, POT = 10 kΩ | ±3.0 | ±6.0 | % | |
| C grade, POT = 10 kΩ | ±2.7 | ±6.0 | % | |||
| Initial Accuracy | VOERR | A and E grades | ±15 mV | ±0.3% | ||
| H grade and nongraded | ±25 mV | ±0.5% | ||||
| C grade | ±50 mV | ±1% | ||||
| Temperature Coefficient | TCVO | A grade and non-graded, −55°C ≤ TA ≤ +125°C | 3 | 8.5 ppm/°C | ||
| E and H grades, 0°C ≤ TA ≤ +70°C | 10 | 25 ppm/°C | ||||
| Input Voltage Range | VIN | 7.0 V | 36 V | |||
| Supply Current | ISUPPLY | 1.4 mA | ||||
| Load Drive Capacity | ILOAD | 10 mA | ||||
| Voltage Noise | eN p-p | 0.1 Hz to 10.0 Hz | 15 µV p-p |
Key Features
- High Output Accuracy: The REF02Z provides a stable +5V output with an accuracy of ±0.3% maximum for A and E grades, and ±0.5% for H grade and nongraded.
- Adjustable Output: The output voltage can be adjusted over a ±6% range using the TRIM terminal.
- Excellent Temperature Stability: The device exhibits a temperature coefficient of 8.5 ppm/°C maximum for A grade and non-graded, and 25 ppm/°C for E and H grades.
- Low Noise: Typical voltage noise is 15 µV p-p in the 0.1 Hz to 10.0 Hz range.
- High Supply Voltage Range: The device can operate with input voltages ranging from 7.0 V to 36 V.
- Low Supply Current: The maximum supply current is 1.4 mA.
- High Load Drive Capacity: The device can drive loads up to 10 mA.
- Temperature Output Function: The TEMP terminal can be used for temperature sensing with an external buffer and resistor network.
Applications
- Precision Data Systems: Ideal for systems requiring high accuracy and stability.
- High Resolution Converters: Suitable for applications needing precise voltage references.
- Industrial Process Control Systems: Used in systems that require stable and accurate voltage references.
- Precision Instruments: Applicable in various precision instruments and measurement devices.
- Military and Aerospace Applications: Available in military-grade packages and suitable for high-stress environments.
Q & A
- What is the output voltage of the REF02Z? The REF02Z provides a stable +5V output.
- What is the input voltage range for the REF02Z? The input voltage range is from 7.0 V to 36 V.
- How accurate is the output voltage of the REF02Z? The output voltage accuracy is ±0.3% maximum for A and E grades, and ±0.5% for H grade and nongraded.
- Can the output voltage of the REF02Z be adjusted? Yes, the output voltage can be adjusted over a ±6% range using the TRIM terminal.
- What is the temperature coefficient of the REF02Z? The temperature coefficient is 8.5 ppm/°C maximum for A grade and non-graded, and 25 ppm/°C for E and H grades.
- What is the typical voltage noise of the REF02Z? The typical voltage noise is 15 µV p-p in the 0.1 Hz to 10.0 Hz range.
- What is the maximum supply current of the REF02Z? The maximum supply current is 1.4 mA.
- What is the load drive capacity of the REF02Z? The device can drive loads up to 10 mA.
- Can the REF02Z be used for temperature sensing? Yes, the TEMP terminal can be used for temperature sensing with an external buffer and resistor network.
- In what types of applications is the REF02Z commonly used? It is commonly used in precision data systems, high-resolution converters, industrial process control systems, precision instruments, and military and aerospace applications.
