REF2025
- Two outputs, VREF and VREF / 2, for convenient use in single-supply systems
- Excellent temperature drift performance:
- 8 ppm/°C (maximum) from –40°C to 125°C
- High initial accuracy: ±0.05% (maximum)
- VREF and VBIAS tracking overtemperature:
- 6 ppm/°C (maximum) from –40°C to 85°C
- 7 ppm/°C (maximum) from –40°C to 125°C
- Microsize package: SOT23-5
- Low dropout voltage: 10 mV
- High output current: ±20 mA
- Low quiescent current: 360 µA
- Line regulation: 3 ppm/V
- Load regulation: 8 ppm/mA
- Matte-Sn version (REF2025AISDDCR) for improved corrosion resistance in the Battelle Class III and similar harsh environments
Applications with only a positive supply voltage often require additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF20xx provides a reference voltage (VREF) for the ADC and a second highly-accurate voltage (VBIAS) that can be used to bias the input bipolar signals.
The REF20xx offers excellent temperature drift (8 ppm/°C, maximum) and initial accuracy (0.05%) on both the VREF and VBIAS outputs while operating at a quiescent current less than 430 µA. In addition, the VREF and VBIAS outputs track each other with a precision of 6 ppm/°C (maximum) across the temperature range of –40°C to 125°C. All these features increase the precision of the signal chain and decrease board space, while reducing the cost of the system as compared to a discrete solution. Extremely low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful in battery-operated systems.
Both the VREF and VBIAS voltages have the same excellent specifications and can sink and source current equally well. Very good long-term stability and low noise levels make these devices ideally-suited for high-precision industrial applications.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | REF20xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References datasheet (Rev. E) | PDF | HTML | 2022年 2月 3日 |
| Application note | Voltage Reference Selection and Design Tips For Data Converters (Rev. B) | PDF | HTML | 2024年 1月 9日 | |
| E-book | Tips and tricks for designing with voltage references (Rev. A) | 2021年 5月 7日 | ||
| White paper | Simplifying Signal Chain Design for High Performance in Small Systems | 2020年 10月 22日 | ||
| Application note | Precision Current Sources and Sinks Using Voltage References | 2020年 6月 30日 | ||
| Application brief | Voltage Reference Solutions in Motor Control Drives | 2019年 7月 29日 | ||
| E-book | Voltage Supervisor and Reset ICs: Tips, Tricks and Basics | 2019年 6月 28日 | ||
| White paper | Voltage reference selection basics white paper (Rev. A) | 2018年 10月 23日 |
設計與開發
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| 封裝 | 引腳 | 下載 |
|---|---|---|
| SOT-23-THN (DDC) | 5 | 檢視選項 |
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