Datasheet REF20-Q1 (Texas Instruments) - 8
| 制造商 | Texas Instruments |
| 描述 | Automotive low-drift, low-power, series voltage reference |
| 页数 / 页 | 36 / 8 — REF20-Q1. www.ti.com. 7.6 Typical Characteristics (continued). Figure … |
| 文件格式/大小 | PDF / 3.4 Mb |
| 文件语言 | 英语 |
REF20-Q1. www.ti.com. 7.6 Typical Characteristics (continued). Figure 7-7. Solder Heat Shift Distribution (VREF)
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REF20-Q1
SBOSA80 – DECEMBER 2021
www.ti.com 7.6 Typical Characteristics (continued)
At TA = 25°C, IL = 0 mA, VIN = 5 V power supply, CL = 0 µF, and 2.5 V output, unless otherwise noted. 50 60 50 40 40 (%) 30 (%) n n tio tio 30 la la u u p 20 p o o P P 20 10 10 0 0 -0.0125 -0.01 -0.0075 -0.005 -0.0025 0 0.0025 -0.0125 -0.01 -0.0075 -0.005 -0.0025 0 0.0025 Solder Heat Shift Histogram - V (%) REF Solder Heat Shift Histogram - VBIAS (%) C041 C040 Refer to the Section 8.1 section for more information. Refer to the Section 8.1 section for more information.
Figure 7-7. Solder Heat Shift Distribution (VREF) Figure 7-8. Solder Heat Shift Distribution (VBIAS)
0.05 1000 0.04 750 0.03 (%) y ) 500 c 0.02 VBIAS m ra p u c 0.01 (p 250 c S IA A B e 0 0 g V x lta -0.01 o - 2 ±250 t V F -0.02 E u R tp V V REF ±500 u -0.03 O -0.04 ±750 -0.05 ±1000 ±75 ±50 ±25 0 25 50 75 100 125 150 ±75 ±50 ±25 0 25 50 75 100 125 150 Temperature (ƒC) C001 Temperature (ƒC) C003
Figure 7-9. Output Voltage Accuracy (VREF) vs Temperature Figure 7-10. VREF – 2 × VBIAS Tracking vs Temperature
2.5005 1.2503 -40°C 2.5000 -40°C 1.2501 ) 2.4995 ) 1.2499 25°C (V (V F S E IA R B V 2.4990 V 1.2497 125°C 25°C 2.4985 1.2495 125°C 2.4980 1.2493 ±20 ±15 ±10 ±5 0 5 10 15 20 ±20 ±15 ±10 ±5 0 5 10 15 20 Load Current (mA) Load Current (mA) C038 C039 VREF output VBIAS output
Figure 7-11. Output Voltage Change vs Load Current (VREF) Figure 7-12. Output Voltage Change vs Load Current (VBIAS)
8 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: REF20-Q1 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Device Comparison Table 6 Pin Configuration and 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 Error Calculations 10.2.1.2.5 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
REF20-Q1
SBOSA80 – DECEMBER 2021
www.ti.com 7.6 Typical Characteristics (continued)
At TA = 25°C, IL = 0 mA, VIN = 5 V power supply, CL = 0 µF, and 2.5 V output, unless otherwise noted. 50 60 50 40 40 (%) 30 (%) n n tio tio 30 la la u u p 20 p o o P P 20 10 10 0 0 -0.0125 -0.01 -0.0075 -0.005 -0.0025 0 0.0025 -0.0125 -0.01 -0.0075 -0.005 -0.0025 0 0.0025 Solder Heat Shift Histogram - V (%) REF Solder Heat Shift Histogram - VBIAS (%) C041 C040 Refer to the Section 8.1 section for more information. Refer to the Section 8.1 section for more information.
Figure 7-7. Solder Heat Shift Distribution (VREF) Figure 7-8. Solder Heat Shift Distribution (VBIAS)
0.05 1000 0.04 750 0.03 (%) y ) 500 c 0.02 VBIAS m ra p u c 0.01 (p 250 c S IA A B e 0 0 g V x lta -0.01 o - 2 ±250 t V F -0.02 E u R tp V V REF ±500 u -0.03 O -0.04 ±750 -0.05 ±1000 ±75 ±50 ±25 0 25 50 75 100 125 150 ±75 ±50 ±25 0 25 50 75 100 125 150 Temperature (ƒC) C001 Temperature (ƒC) C003
Figure 7-9. Output Voltage Accuracy (VREF) vs Temperature Figure 7-10. VREF – 2 × VBIAS Tracking vs Temperature
2.5005 1.2503 -40°C 2.5000 -40°C 1.2501 ) 2.4995 ) 1.2499 25°C (V (V F S E IA R B V 2.4990 V 1.2497 125°C 25°C 2.4985 1.2495 125°C 2.4980 1.2493 ±20 ±15 ±10 ±5 0 5 10 15 20 ±20 ±15 ±10 ±5 0 5 10 15 20 Load Current (mA) Load Current (mA) C038 C039 VREF output VBIAS output
Figure 7-11. Output Voltage Change vs Load Current (VREF) Figure 7-12. Output Voltage Change vs Load Current (VBIAS)
8 Submit Document Feedback Copyright © 2021 Texas Instruments Incorporated Product Folder Links: REF20-Q1 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Device Comparison Table 6 Pin Configuration and 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 Error Calculations 10.2.1.2.5 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