Datasheet REF2025, REF2030, REF2033, REF2041 (Texas Instruments)
| Fabricante | Texas Instruments |
| Descripción | Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References |
| Páginas / Página | 35 / 1 — REF2025. , REF2030,. REF2033. , REF2041. REF20xx Low-Drift, Low-Power, … |
| Formato / tamaño de archivo | PDF / 3.9 Mb |
| Idioma del documento | Inglés |
REF2025. , REF2030,. REF2033. , REF2041. REF20xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References
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REF2025 , REF2030, REF2033 , REF2041
SBOS600E – JULY 2018 – REVISED FEBRUARY 2022
REF20xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References 1 Features 3 Description
• Two outputs, VREF and VREF / 2, for convenient Applications with only a positive supply voltage often use in single-supply systems require additional stable voltage in the middle of • Excellent temperature drift performance: the analog-to-digital converter (ADC) input range to – 8 ppm/°C (maximum) from –40°C to 125°C bias input bipolar signals. The REF20xx provides a • High initial accuracy: ±0.05% (maximum) reference voltage (VREF) for the ADC and a second • V highly-accurate voltage (V REF and VBIAS tracking overtemperature: BIAS) that can be used to – 6 ppm/°C (maximum) from –40°C to 85°C bias the input bipolar signals. – 7 ppm/°C (maximum) from –40°C to 125°C The REF20xx offers excellent temperature drift • Microsize package: SOT23-5 (8 ppm/°C, maximum) and initial accuracy (0.05%) • Low dropout voltage: 10 mV on both the VREF and VBIAS outputs while operating • High output current: ±20 mA at a quiescent current less than 430 µA. In addition, • Low quiescent current: 360 μA the VREF and VBIAS outputs track each other with • Line regulation: 3 ppm/V a precision of 6 ppm/°C (maximum) across the • Load regulation: 8 ppm/mA temperature range of –40°C to 125°C. All these • Matte-Sn version (REF2025AISDDCR) for features increase the precision of the signal chain and improved corrosion resistance in the Battelle Class decrease board space, while reducing the cost of the III and similar harsh environments system as compared to a discrete solution. Extremely
2 Applications
low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful • Electricity meter in battery-operated systems. • Analog input module • Analog output module Both the VREF and VBIAS voltages have the same • Servo drive control module excellent specifications and can sink and source • Circuit breaker (ACB, MCCB, VCB) current equally well. Very good long-term stability and • Clinical digital thermometer low noise levels make these devices ideally-suited for • Lab & field instrumentation high-precision industrial applications. • Battery test
Device Information PART NAME PACKAGE
(1)
BODY SIZE (NOM)
REF20xx SOT-23 (5) 2.90 mm × 1.60 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Power 0.05 Supply 0.04 0.03 AD (%) O y c V L 0.02 BIAS ra u V c 0.01 IN+ c A e 0 g V
INA213
OUT
ADC
R lta SHUNT ISENSE -0.01 o t V -0.02 u V REF V IN- tp REF u -0.03 O -0.04
VBIAS VREF 1.5 V 3.0 V
-0.05 ±75 ±50 ±25 0 25 50 75 100 125 150 Temperature (ƒC)
REF2030
C001
VREF and VBIAS vs Temperature
EN VIN GND
Application Example
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Device Comparison Table 6 Pin Configuration and Functions Pin Functions 7 Specifications 7.1 Absolute Maximum Ratings 7.2 ESD Ratings 7.3 Recommended Operating Conditions 7.4 Thermal Information 7.5 Electrical Characteristics 7.6 Typical Characteristics 8 Parameter Measurement Information 8.1 Solder Heat Shift 8.2 Long-Term Stability 8.3 Thermal Hysteresis 8.4 Noise Performance 9 Detailed Description 9.1 Overview 9.2 Functional Block Diagram 9.3 Feature Description 9.3.1 VREF and VBIAS Tracking 9.3.2 Low Temperature Drift 9.3.3 Load Current 9.4 Device Functional Modes 10 Applications and Implementation 10.1 Application Information 10.2 Typical Application 10.2.1 Low-Side, Current-Sensing Application 10.2.1.1 Design Requirements 10.2.1.2 Detailed Design Procedure 10.2.1.2.1 Shunt Resistor 10.2.1.2.2 Differential Amplifier 10.2.1.2.3 Voltage Reference 10.2.1.2.4 Results 10.2.1.3 Application Curves 11 Power-Supply Recommendations 12 Layout 12.1 Layout Guidelines 12.2 Layout Example 13 Device and Documentation Support 13.1 Documentation Support 13.1.1 Related Documentation 13.2 Receiving Notification of Documentation Updates 13.3 Support Resources 13.4 Trademarks 13.5 Electrostatic Discharge Caution 13.6 Glossary 14 Mechanical, Packaging, and Orderable Information
REF2025 , REF2030, REF2033 , REF2041
SBOS600E – JULY 2018 – REVISED FEBRUARY 2022
REF20xx Low-Drift, Low-Power, Dual-Output, VREF and VREF / 2 Voltage References 1 Features 3 Description
• Two outputs, VREF and VREF / 2, for convenient Applications with only a positive supply voltage often use in single-supply systems require additional stable voltage in the middle of • Excellent temperature drift performance: the analog-to-digital converter (ADC) input range to – 8 ppm/°C (maximum) from –40°C to 125°C bias input bipolar signals. The REF20xx provides a • High initial accuracy: ±0.05% (maximum) reference voltage (VREF) for the ADC and a second • V highly-accurate voltage (V REF and VBIAS tracking overtemperature: BIAS) that can be used to – 6 ppm/°C (maximum) from –40°C to 85°C bias the input bipolar signals. – 7 ppm/°C (maximum) from –40°C to 125°C The REF20xx offers excellent temperature drift • Microsize package: SOT23-5 (8 ppm/°C, maximum) and initial accuracy (0.05%) • Low dropout voltage: 10 mV on both the VREF and VBIAS outputs while operating • High output current: ±20 mA at a quiescent current less than 430 µA. In addition, • Low quiescent current: 360 μA the VREF and VBIAS outputs track each other with • Line regulation: 3 ppm/V a precision of 6 ppm/°C (maximum) across the • Load regulation: 8 ppm/mA temperature range of –40°C to 125°C. All these • Matte-Sn version (REF2025AISDDCR) for features increase the precision of the signal chain and improved corrosion resistance in the Battelle Class decrease board space, while reducing the cost of the III and similar harsh environments system as compared to a discrete solution. Extremely
2 Applications
low dropout voltage of only 10 mV allows operation from very low input voltages, which can be very useful • Electricity meter in battery-operated systems. • Analog input module • Analog output module Both the VREF and VBIAS voltages have the same • Servo drive control module excellent specifications and can sink and source • Circuit breaker (ACB, MCCB, VCB) current equally well. Very good long-term stability and • Clinical digital thermometer low noise levels make these devices ideally-suited for • Lab & field instrumentation high-precision industrial applications. • Battery test
Device Information PART NAME PACKAGE
(1)
BODY SIZE (NOM)
REF20xx SOT-23 (5) 2.90 mm × 1.60 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Power 0.05 Supply 0.04 0.03 AD (%) O y c V L 0.02 BIAS ra u V c 0.01 IN+ c A e 0 g V
INA213
OUT
ADC
R lta SHUNT ISENSE -0.01 o t V -0.02 u V REF V IN- tp REF u -0.03 O -0.04
VBIAS VREF 1.5 V 3.0 V
-0.05 ±75 ±50 ±25 0 25 50 75 100 125 150 Temperature (ƒC)
REF2030
C001
VREF and VBIAS vs Temperature
EN VIN GND
Application Example
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Device Comparison Table 6 Pin Configuration and Functions Pin Functions 7 Specifications 7.1 Absolute Maximum Ratings 7.2 ESD Ratings 7.3 Recommended Operating Conditions 7.4 Thermal Information 7.5 Electrical Characteristics 7.6 Typical Characteristics 8 Parameter Measurement Information 8.1 Solder Heat Shift 8.2 Long-Term Stability 8.3 Thermal Hysteresis 8.4 Noise Performance 9 Detailed Description 9.1 Overview 9.2 Functional Block Diagram 9.3 Feature Description 9.3.1 VREF and VBIAS Tracking 9.3.2 Low Temperature Drift 9.3.3 Load Current 9.4 Device Functional Modes 10 Applications and Implementation 10.1 Application Information 10.2 Typical Application 10.2.1 Low-Side, Current-Sensing Application 10.2.1.1 Design Requirements 10.2.1.2 Detailed Design Procedure 10.2.1.2.1 Shunt Resistor 10.2.1.2.2 Differential Amplifier 10.2.1.2.3 Voltage Reference 10.2.1.2.4 Results 10.2.1.3 Application Curves 11 Power-Supply Recommendations 12 Layout 12.1 Layout Guidelines 12.2 Layout Example 13 Device and Documentation Support 13.1 Documentation Support 13.1.1 Related Documentation 13.2 Receiving Notification of Documentation Updates 13.3 Support Resources 13.4 Trademarks 13.5 Electrostatic Discharge Caution 13.6 Glossary 14 Mechanical, Packaging, and Orderable Information