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REF5045
- Low temperature drift (maximum):
- Enhanced-grade: 2.5ppm/°C
- High-grade: 3ppm/°C
- Standard-grade: 8ppm/°C
- High accuracy (maximum):
- Enhanced-grade: 0.025%
- High-grade: 0.05%
- Standard-grade: 0.1%
- Low noise:
- Enhanced-grade: 0.5µVPP/V
- High/Standard-grade: 3µVPP/V
- Excellent long-term stability:
- 22ppm after first 1000 hours (SOIC-8)
- 50ppm after first 1000 hours (VSSOP-8)
- Wide input voltage support:
- Enhanced-grade: 42V
- High/Standard-grade: 18V
- High-output current: ±10mA
- Temperature range: -40°C to 125°C
The REF50xx is a family of low-noise, low-drift, very high precision voltage references. These references are capable of both sinking and sourcing current, and have excellent line and load regulation.
Excellent temperature drift (2.5ppm/°C) and high accuracy (0.025%) are achieved using proprietary design techniques. These features, combined with very low flicker noise (0.5µVPP/V), make the REF50xx family an excellent choice for use in high-precision data acquisition systems. REF50 family is available in enhanced grade (REF50xxEI), high grade (REF50xxI) and standard grade (REF50xxAI). The reference voltages are offered in 8-pin SOIC and VSSOP packages and are specified from –40°C to 125°C.
The REF50xxEI supports wide supply voltage rating of 42V with ultra-low IQ of 280µA. The wide supply range allows for direct connection to the battery or field supply. This also protects the device in case of power supply IC failure.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | REF50xx Low-Noise, Very Low Drift, Wide VIN Precision Voltage Reference datasheet (Rev. L) | PDF | HTML | 18 Oct 2024 |
Circuit design | High-input impedance, true differential, AFE attenuator circuit for SAR ADCs (Rev. B) | PDF | HTML | 25 Sep 2024 | |
Application note | Voltage Reference Selection and Design Tips For Data Converters (Rev. B) | PDF | HTML | 09 Jan 2024 | |
Application note | Stacking the REF50xx for High-Voltage References (Rev. B) | PDF | HTML | 25 Apr 2023 | |
E-book | Tips and tricks for designing with voltage references (Rev. A) | 07 May 2021 | ||
Application note | Long-Term Drift in Voltage References | PDF | HTML | 25 Mar 2021 | |
Application note | Low-Noise Negative Reference Design with REF5025 | 01 Dec 2019 | ||
E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 28 Jun 2019 | ||
White paper | Voltage reference selection basics white paper (Rev. A) | 23 Oct 2018 | ||
White paper | Voltage-reference impact on total harmonic distortion | 01 Aug 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
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Supported products & hardware
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Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
SOIC (D) | 8 | Ultra Librarian |
VSSOP (DGK) | 8 | Ultra Librarian |
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