Overview
The REF02HS is a precision voltage reference and temperature transducer produced by Analog Devices Inc. This device is part of the REF02 series, which provides a stable 5.0 V output voltage with high accuracy and minimal variation in response to changes in supply voltage, ambient temperature, or load conditions.
The REF02HS is designed for single-supply operation with an input voltage range of 7 V to 40 V, making it versatile for various applications. It features low current drain, excellent temperature stability, and high load-driving capability, making it an excellent choice for applications requiring a stable voltage reference.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Output Voltage | VO | IL = 0 mA | 4.975 | 5.000 | 5.025 | V |
| Output Adjustment Range | ΔVTRIM | RP = 10 kΩ | ±2.7 | ±6.0 | % | |
| Initial Accuracy | VOERR | A and E grades | ±25 mV | ±0.5% | ||
| Temperature Coefficient | TCVO | A grade, −55°C ≤ TA ≤ +125°C | 8.5 ppm/°C | |||
| Voltage Noise | eN p-p | 0.1 Hz to 10 Hz (P, Z, and S Packages) | 15 µV p-p | |||
| Turn-On Settling Time | tON | To ±0.1% of final value | 5 µs | |||
| Quiescent Supply Current | ISY | No load | 1.0 | 1.6 | mA | |
| Input Voltage Range | VIN | 7 V | 40 V |
Key Features
- Stable 5.0 V Output: The REF02HS provides a precise 5.0 V output voltage with a maximum deviation of ±0.3%.
- Adjustable Output: The output voltage can be adjusted over a ±6% range using the TRIM terminal.
- Excellent Temperature Stability: The device features a temperature coefficient of 8.5 ppm/°C maximum, ensuring minimal drift with temperature changes.
- Low Noise: The voltage noise is as low as 15 µV p-p in the 0.1 Hz to 10 Hz frequency range.
- Low Supply Current: The quiescent supply current is 1.6 mA maximum, making it suitable for low-power applications.
- High Load-Driving Capability: The REF02HS can drive loads up to 10 mA.
- Temperature Sensing: The TEMP terminal can be used for temperature sensing with a voltage output of 1.96 mV/°C.
Applications
- DACs and ADCs: The REF02HS is suitable for digital-to-analog converters (DACs) and analog-to-digital converters (ADCs) due to its stable output voltage.
- Portable Instrumentation: Its low power consumption and high accuracy make it ideal for portable instrumentation applications.
- Digital Voltmeters: The device is used in digital voltmeters where precise voltage references are required.
- General-Purpose and Space-Constrained Applications: The small footprint and wide supply range of the REF02HS make it versatile for various general-purpose and space-constrained applications.
Q & A
- What is the output voltage of the REF02HS?
The output voltage of the REF02HS is 5.0 V with a maximum deviation of ±0.3%.
- What is the input voltage range for the REF02HS?
The input voltage range for the REF02HS is from 7 V to 40 V.
- Can the output voltage of the REF02HS be adjusted?
Yes, the output voltage can be adjusted over a ±6% range using the TRIM terminal).
- What is the temperature coefficient of the REF02HS?
The temperature coefficient of the REF02HS is 8.5 ppm/°C maximum).
- How much noise does the REF02HS produce?
The voltage noise of the REF02HS is as low as 15 µV p-p in the 0.1 Hz to 10 Hz frequency range).
- What is the quiescent supply current of the REF02HS?
The quiescent supply current of the REF02HS is 1.6 mA maximum).
- Can the REF02HS be used for temperature sensing?
Yes, the TEMP terminal can be used for temperature sensing with a voltage output of 1.96 mV/°C).
- What are some common applications of the REF02HS?
The REF02HS is commonly used in DACs, ADCs, portable instrumentation, digital voltmeters, and other general-purpose and space-constrained applications).
- What are the available packages for the REF02HS?
The REF02HS is available in 8-lead SOIC, PDIP, CERDIP, and TO-99 packages, as well as 20-terminal LCC packages (883 only)).
- Are there any newer alternatives to the REF02HS?
Yes, newer designs should consider the ADR02 series, which offers higher accuracy and temperature stability over a wider operating temperature range while maintaining full pin-for-pin compatibility with the REF02 series).
