Datasheet REF20-Q1 (Texas Instruments) - 10
| Hersteller | Texas Instruments |
| Beschreibung | Automotive low-drift, low-power, series voltage reference |
| Seiten / Seite | 36 / 10 — REF20-Q1. www.ti.com. 7.6 Typical Characteristics (continued). Figure … |
| Dateiformat / Größe | PDF / 3.4 Mb |
| Dokumentensprache | Englisch |
REF20-Q1. www.ti.com. 7.6 Typical Characteristics (continued). Figure 7-19. Power-Supply Rejection Ratio vs Frequency
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Textversion des Dokuments
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. 100 100 VBIAS 80 VBIAS 80 ) VREF B B (d VREF (d R 60 R 60 R R S S P P 40 40 20 20 1 10 100 1k 10k 100k 1 10 100 1k 10k 100k Frequency (Hz) Frequency (Hz) C026 C027 CL = 0 µF CL = 10 µF
Figure 7-19. Power-Supply Rejection Ratio vs Frequency Figure 7-20. Power-Supply Rejection Ratio vs Frequency
V V IN + 0.25 V IN + 0.25 V V V IN + 0.25 V IN + 0.25V 500 mV/div 500 mV/div VIN - 0.25 V VIN - 0.25V VREF VREF 40 mV/div 40 mV/div Time (500 µs/div) Time (500 µs/div) C006 C006 CL = 1 µF CL = 10 µF
Figure 7-21. Line Transient Response Figure 7-22. Line Transient Response
+1 mA +1 mA +1 mA +1 mA 2 mA/div 2 mA/div - 1 mA - 1 mA VREF VREF 20 mV/div 20 mV/div Time (500 µs/div) Time (500 µs/div) C032 C037 CL = 1 µF IL = ±1-mA step CL = 10 µF IL = ±1-mA step
Figure 7-23. Load Transient Response Figure 7-24. Load Transient Response
10 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
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. 100 100 VBIAS 80 VBIAS 80 ) VREF B B (d VREF (d R 60 R 60 R R S S P P 40 40 20 20 1 10 100 1k 10k 100k 1 10 100 1k 10k 100k Frequency (Hz) Frequency (Hz) C026 C027 CL = 0 µF CL = 10 µF
Figure 7-19. Power-Supply Rejection Ratio vs Frequency Figure 7-20. Power-Supply Rejection Ratio vs Frequency
V V IN + 0.25 V IN + 0.25 V V V IN + 0.25 V IN + 0.25V 500 mV/div 500 mV/div VIN - 0.25 V VIN - 0.25V VREF VREF 40 mV/div 40 mV/div Time (500 µs/div) Time (500 µs/div) C006 C006 CL = 1 µF CL = 10 µF
Figure 7-21. Line Transient Response Figure 7-22. Line Transient Response
+1 mA +1 mA +1 mA +1 mA 2 mA/div 2 mA/div - 1 mA - 1 mA VREF VREF 20 mV/div 20 mV/div Time (500 µs/div) Time (500 µs/div) C032 C037 CL = 1 µF IL = ±1-mA step CL = 10 µF IL = ±1-mA step
Figure 7-23. Load Transient Response Figure 7-24. Load Transient Response
10 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