Overview
The REF02HJ8, produced by Analog Devices Inc., is a precision voltage reference device that provides a stable 5.0V output voltage. This component is part of the REF01/REF02/REF03 series, known for their high accuracy and stability over a wide range of operating conditions. The REF02HJ8 is particularly useful in applications requiring precise voltage references with minimal variation due to changes in supply voltage, ambient temperature, or load conditions.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Output Voltage (VO) | IL = 0mA | 4.975 | 5.000 | 5.025 | V |
| Output Adjustment Range (ΔVTRIM) | POT = 10 kΩ | ±3.0 | ±6.0 | % | |
| Initial Accuracy (VOERR) | ±25 mV | ±0.5% | |||
| Temperature Coefficient (TCVO) | −55°C ≤ TA ≤ +125°C | 3 | 8.5 | ppm/°C | |
| Input Voltage Range (VIN) | 7.0 | 36 | V | ||
| Output Noise (enP-P) | 0.1Hz to 10Hz | 10 | μV p-p | ||
| Load Regulation (ΔVOUT/ΔIOUT) | IL = 0mA to 5mA | 0.002 | 0.05% | /mA | |
| Operating Temperature Range | −55°C | 125°C |
Key Features
- High Output Accuracy: The REF02HJ8 provides an output voltage of 5.0V with a maximum accuracy of ±0.3% and an initial accuracy of ±0.5%.
- Adjustable Output: The output voltage can be adjusted over a ±3% range using the TRIM terminal.
- Excellent Temperature Stability: The device features a temperature coefficient of 8.5 ppm/°C maximum, ensuring minimal output voltage change with temperature variations.
- Low Noise: The REF02HJ8 has a low output noise of 15 μV p-p typical, making it suitable for high-precision applications.
- Wide Supply Voltage Range: The device can operate with an input voltage range of 7.0V to 36V.
- Temperature Sensing: The TEMP terminal can be used for temperature sensing and approximation with an external buffer and resistor network.
- High Load-Driving Capability: The REF02HJ8 can drive loads up to 10 mA.
Applications
- Precision Data Systems: Ideal for systems requiring high precision and stability in voltage references.
- High Resolution Converters: Suitable for use in analog-to-digital and digital-to-analog converters where precise voltage references are critical.
- Industrial Process Control Systems: Used in industrial control systems that demand stable and accurate voltage references.
- Precision Instruments: Applicable in various precision instruments and measurement devices.
- Military and Aerospace Applications: Available in military-grade packages (883) for high-stress and reliable operation.
Q & A
- What is the output voltage of the REF02HJ8?
The output voltage of the REF02HJ8 is 5.0V with an accuracy of ±0.3% maximum and ±0.5% initial accuracy.
- Can the output voltage of the REF02HJ8 be adjusted?
Yes, the output voltage can be adjusted over a ±3% range using the TRIM terminal.
- What is the temperature coefficient of the REF02HJ8?
The temperature coefficient of the REF02HJ8 is 8.5 ppm/°C maximum.
- What is the input voltage range for the REF02HJ8?
The input voltage range for the REF02HJ8 is 7.0V to 36V.
- How much noise does the REF02HJ8 produce?
The REF02HJ8 produces a low output noise of 15 μV p-p typical.
- Can the REF02HJ8 be used for temperature sensing?
Yes, the TEMP terminal can be used for temperature sensing and approximation with an external buffer and resistor network.
- What is the maximum load current that the REF02HJ8 can drive?
The REF02HJ8 can drive loads up to 10 mA.
- In what packages is the REF02HJ8 available?
The REF02HJ8 is available in 8-lead SOIC, PDIP, CERDIP, and TO-99 packages, as well as 20-terminal LCC packages (883 only).
- What are some typical applications of the REF02HJ8?
The REF02HJ8 is typically used in precision data systems, high resolution converters, industrial process control systems, precision instruments, and military and aerospace applications).
- Are there any newer alternatives to the REF02HJ8?
Yes, newer designs can use the ADR01/ADR02/ADR03/ADR06 series, which offer higher accuracy and temperature stability over a wider operating temperature range while maintaining full pin-for-pin compatibility with the REF01/REF02/REF03 series).
