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REF50E

現行

加强型低雜訊 (0.5μVpp/V) ，低漂移 (2.5ppm° μV/C)，大範圍 VIN (42V) 精密電壓參考

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產品規格表

REF50E

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog VO (V) 2.5, 3, 4.096, 4.5, 5 Temp coeff (max) (ppm/°C) 2.5 Initial accuracy (max) (%) 0.025 Features Noise-reduction pin Iout/Iz (max) (mA) 10 Vin (min) (V) 2.7 Vin (max) (V) 42 Iq (typ) (mA) 0.34 Operating temperature range (°C) -40 to 125
Rating Catalog VO (V) 2.5, 3, 4.096, 4.5, 5 Temp coeff (max) (ppm/°C) 2.5 Initial accuracy (max) (%) 0.025 Features Noise-reduction pin Iout/Iz (max) (mA) 10 Vin (min) (V) 2.7 Vin (max) (V) 42 Iq (typ) (mA) 0.34 Operating temperature range (°C) -40 to 125
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Low temperature drift (maximum):
    • Enhanced-grade (new): 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
  • Low temperature drift (maximum):
    • Enhanced-grade (new): 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. The references are capable of both sinking and sourcing current, and have excellent line and load regulation.

Achieve excellent temperature drift (2.5ppm/°C) and high accuracy (0.025%) 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.

For detailed comparison across various grades, refer to .

The REF50xx is a family of low-noise, low-drift, very high precision voltage references. The references are capable of both sinking and sourcing current, and have excellent line and load regulation.

Achieve excellent temperature drift (2.5ppm/°C) and high accuracy (0.025%) 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.

For detailed comparison across various grades, refer to .
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 REF50xx Low-Noise, Very Low Drift, Wide VIN Precision Voltage Reference datasheet (Rev. O) PDF | HTML 2025/10/16
Circuit design High-input impedance, true differential, AFE attenuator circuit for SAR ADCs (Rev. B) PDF | HTML 2024/9/25
Circuit design High-current battery monitor circuit: 0–10A, 0-10kHz, 18 bit (Rev. A) PDF | HTML 2024/9/12
Circuit design ±12-V voltage sensing circuit with an isolated amplifier and differential input (Rev. A) PDF | HTML 2024/6/6
應用說明 Voltage Reference Selection and Design Tips For Data Converters (Rev. B) PDF | HTML 2024/1/9
應用說明 Analog Time Gain Control (ATGC) Solutions for TI’s Ultrasound AFE PDF | HTML 2023/5/18
應用說明 Stacking the REF50xx for High-Voltage References (Rev. B) PDF | HTML 2023/4/25
電子書 Tips and tricks for designing with voltage references (Rev. A) 2021/5/7
應用說明 Long-Term Drift in Voltage References PDF | HTML 2021/3/25
應用說明 Low-Noise Negative Reference Design with REF5025 2019/12/1
電子書 Voltage Supervisor and Reset ICs: Tips, Tricks and Basics 2019/6/28
白皮書 Voltage reference selection basics white paper (Rev. A) 2018/10/23
類比設計期刊 Q3 2009 Issue Analog Applications Journal 2018/9/24
類比設計期刊 Q4 2009 Issue Analog Applications Journal 2018/9/24
Application brief Level Shifting Signals With Differential Amplifiers (Rev. A) 2018/4/2
白皮書 Voltage-reference impact on total harmonic distortion 2016/8/1
類比設計期刊 How the voltage reference affects ADC performance, Part 3 2009/10/4
類比設計期刊 How the voltage reference affects ADC performance, Part 2 2009/7/14
應用說明 Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 2009/6/24

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設計工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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參考設計

TIDA-010086 — 數位控制成本最佳化的 10 A 電池化成與測試參考設計

此參考設計為多通道電池化成與測試應用提供符合成本效益的設計。此設計使用 C2000™ 即時微控制器 (MCU) 與 16 通道同時取樣精密 ADC，可進行垂直擴展擴充以支援 8 通道電池芯測試。此設計運用 HRPWM 模組進行精確的工作週期控制，以達到精密數位類比轉換器的性能，進而節省超過 30% 的物料清單成本。MCU 整合 2p2z 控制，可用於恆定電流 (CC) 及恆定電壓 (CV) 控制運作。多通道 ADC 可將軟體中電流和電壓迴路的靈活性最佳化。此設計允許以單一方式進行多種電流與電壓位準輸出。

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