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REF2025

現行

8-ppm/°C 漂移、低功耗、雙輸出 Vref 和 Vref/2 電壓參考

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產品規格表

REF2025

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog VO (V) 2.5 Temp coeff (max) (ppm/°C) 8 Initial accuracy (max) (%) 0.05 Features Enable pin, Multiple outputs Iout/Iz (max) (mA) 20 Vin (min) (V) 2.52 Vin (max) (V) 5.5 Iq (typ) (mA) 0.36, 360 LFN 0.1 to 10 Hz (typ) (µVPP) 30 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 3.3
Rating Catalog VO (V) 2.5 Temp coeff (max) (ppm/°C) 8 Initial accuracy (max) (%) 0.05 Features Enable pin, Multiple outputs Iout/Iz (max) (mA) 20 Vin (min) (V) 2.52 Vin (max) (V) 5.5 Iq (typ) (mA) 0.36, 360 LFN 0.1 to 10 Hz (typ) (µVPP) 30 Operating temperature range (°C) -40 to 125 Shutdown current (ISD) (typ) (µA) 3.3
SOT-23-THN (DDC) 5 8.12 mm² 2.9 x 2.8
  • 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
  • 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.

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.
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重要文件 類型 標題 格式選項 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

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REF2025 PSpice Model

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REF2025 TINA-TI Reference Design

SBOM896.TSC (21 KB) - TINA-TI Reference Design
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REF2025 TINA-TI Spice Model

SBOM895.ZIP (8 KB) - TINA-TI Spice Model
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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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