REF1941
- Two Outputs, VREF and VREF / 2, for Convenient Use in Single-Supply Systems
- Excellent Temperature Drift Performance:
- 25 ppm/°C (max) from –40°C to 125°C
- High Initial Accuracy: ±0.1% (max)
- VREF and VBIAS Tracking over Temperature:
- 6 ppm/°C (max) from –40°C to 85°C
- 7 ppm/°C (max) 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
Applications with only a positive supply voltage often require an additional stable voltage in the middle of the analog-to-digital converter (ADC) input range to bias input bipolar signals. The REF19xx 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 REF19xx offers excellent temperature drift (25 ppm/°C, max) and initial accuracy (0.1%) 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 (max) across the temperature range of –40°C to 85°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 | REF19xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References datasheet (Rev. A) | PDF | HTML | 2017年 1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 | ||
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
如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TIPD156 — 低漂移雙向單電源低壓側電流感測參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
SOT-23-THN (DDC) | 5 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點