REF2033
- 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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | REF20xx 低漂移、低功耗、双输出 Vref 和 Vref/2 电压基准 数据表 (Rev. E) | PDF | HTML | 2022-2-3 | ||
| 应用手册 | 关于数据转换器的基准电压选择和设计提示 (Rev. B) | PDF | HTML | 英语版 (Rev.B) | PDF | HTML | 2024-1-10 | |
| 应用简报 | 电机驱动器的电压基准解决方案 | 英语版 | 2021-8-5 | |||
| 电子书 | Tips and tricks for designing with voltage references (Rev. A) | 2021-5-7 | ||||
| 白皮书 | 简化信号链设计，在小型系统中实现高性能 | 英语版 | 2020-10-22 | |||
| 电子书 | 电压监测仪和电压检测器：提示、技巧和基础知识 | 英语版 | 2019-8-28 | |||
| 白皮书 | Voltage reference selection basics white paper (Rev. A) | 2018-10-23 | ||||
| 应用手册 | Low-Cost, Low-Power, Small 14-bit AFE: Interleaved ADCs Scalable up to 7.5 MSPS | 2017-5-26 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
DIP-ADAPTER-EVM — DIP 适配器评估模块
借助 DIP-Adapter-EVM 加快运算放大器的原型设计和测试，该 EVM 有助于快速轻松地连接小型表面贴装 IC 并且价格低廉。您可以使用随附的 Samtec 端子板连接任何受支持的运算放大器，或者将这些端子板直接连接至现有电路。
DIP-Adapter-EVM 套件支持六种常用的业界通用封装，包括：
- D 和 U (SOIC-8)
- PW (TSSOP-8)
- DGK（MSOP-8、VSSOP-8）
- DBV（SOT23-6、SOT23-5 和 SOT23-3）
- DCK（SC70-6 和 SC70-5）
- DRL (SOT563-6)
BOOSTXL-POSMGR — C2000 DesignDRIVE 位置管理器 BoosterPack™ 插件模块
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
许多 TI 参考设计都包括 REF2033
通过我们的参考设计选择工具来审查并确定最适用于您应用和参数的设计。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 5 | Ultra Librarian |