Datasheet REF3430 (Texas Instruments)
| Fabricante | Texas Instruments |
| Descripción | 3-V, low-drift, low-power, small-footprint series voltage reference |
| Páginas / Página | 31 / 1 — REF3425,. REF3430. , REF3433,. REF3440. , REF3450. REF34xx Low-Drift, … |
| Formato / tamaño de archivo | PDF / 2.5 Mb |
| Idioma del documento | Inglés |
REF3425,. REF3430. , REF3433,. REF3440. , REF3450. REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference
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REF3425, REF3430 , REF3433, REF3440 , REF3450
SBAS804F – SEPTEMBER 2017 – REVISED JUNE 2021
REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference 1 Features 3 Description
• Initial accuracy: ±0.05% (maximum) The REF34xx device is a low temperature drift • Temperature coefficient : 6 ppm/°C (maximum) (6 ppm/°C), low-power, high-precision CMOS voltage • Operating temperature range: −40°C to +125°C reference, featuring ±0.05% initial accuracy, low • Output current: ±10 mA operating current with power consumption less than • Low quiescent current: 95 μA (maximum) 95 μA. This device also offers very low output noise of • Ultra-low zero load dropout voltage: 100 mV 3.8 μVp-p /V, which enables its ability to maintain high (maximum) signal integrity with high-resolution data converters in • Wide input voltage: 12 V noise critical systems. With a small SOT-23 package, • Output 1/f noise (0.1 Hz to 10 Hz): 3.8 µVp-p/V REF34xx offers enhanced specifications and pin-to- • Excellent long-term stability 25 ppm/1000 hrs pin replacement for MAX607x, ADR34xx and LT1790 • Multiple small footprint 6 pin SOT-23 package (REF34xxT, no EN pin). The REF34xx family is pinouts: REF34xx and REF34xxT compatible to most of the ADC and DAC such as
2 Applications
ADS1287, DAC8802 and ADS1112. Stability and system reliability are further improved • Data acquisition systems by the low output-voltage hysteresis of the device • Analog I/O modules and low long-term output voltage drift. Furthermore, • Field transmitters the small size and low operating current of the • Lab & field instrumentation devices (95 μA) benefit portable and battery-powered • Servo drive control modules applications. • DC power supply, AC source, electronic load REF34xx is specified for the wide temperature range
Voltage Reference Recommendation for Data
of −40°C to +125°C.
Converters ADC Device Information DAC RESOLUTION VOLTAGE REFERENCE RESOLUTION
(1)
PART NAME PACKAGE
(1)
BODY SIZE (NOM)
(1) REF34xx TL431LI, TLV431 10-b 8-b SOT-23 (6) 2.90 mm × 1.60 mm REF34xxT LM4040, LM4050, REF30 12-b 10-b REF31, REF33, REF4132 14-b to 16-b 12-b (1) For all available packages, see the orderable addendum at the end of the data sheet REF34, REF50 16-b to 18-b 14-b to 16-b REF70 18-b+ 16-b+ (1) For specific ADC/DAC recommendations, see SNAA320 10 10 0.4 25°C 0.36 124 125°C - 0.32 -40°C Input Signal ADS1287 + 1 nF ) 0.28 REF (V e g 0.24 VIN lta o 0.2 t V CIN REF34xx COUT ou 0.16 1µF 10 µF rop D 0.12 0.08 0.04 Copyright © 2017, Texas Instruments Incorporated
Simplified Schematic
0 0 5 10 Load Current (mA)
Dropout vs. Current Load Over Temperature
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 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 Power Dissipation 8.5 Noise Performance 9 Detailed Description 9.1 Overview 9.2 Functional Block Diagram 9.3 Feature Description 9.3.1 Supply Voltage 9.3.2 Low Temperature Drift 9.3.3 Load Current 9.4 Device Functional Modes 9.4.1 EN Pin 9.4.2 Negative Reference Voltage 10 Application and Implementation 10.1 Application Information 10.2 Typical Application: Basic Voltage Reference Connection 10.2.1 Design Requirements 10.2.2 Detailed Design Procedure 10.2.2.1 Input and Output Capacitors 10.2.2.2 4-Wire Kelvin Connections 10.2.2.3 VIN Slew Rate Considerations 10.2.2.4 Shutdown/Enable Feature 10.2.3 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
REF3425, REF3430 , REF3433, REF3440 , REF3450
SBAS804F – SEPTEMBER 2017 – REVISED JUNE 2021
REF34xx Low-Drift, Low-Power, Small-Footprint Series Voltage Reference 1 Features 3 Description
• Initial accuracy: ±0.05% (maximum) The REF34xx device is a low temperature drift • Temperature coefficient : 6 ppm/°C (maximum) (6 ppm/°C), low-power, high-precision CMOS voltage • Operating temperature range: −40°C to +125°C reference, featuring ±0.05% initial accuracy, low • Output current: ±10 mA operating current with power consumption less than • Low quiescent current: 95 μA (maximum) 95 μA. This device also offers very low output noise of • Ultra-low zero load dropout voltage: 100 mV 3.8 μVp-p /V, which enables its ability to maintain high (maximum) signal integrity with high-resolution data converters in • Wide input voltage: 12 V noise critical systems. With a small SOT-23 package, • Output 1/f noise (0.1 Hz to 10 Hz): 3.8 µVp-p/V REF34xx offers enhanced specifications and pin-to- • Excellent long-term stability 25 ppm/1000 hrs pin replacement for MAX607x, ADR34xx and LT1790 • Multiple small footprint 6 pin SOT-23 package (REF34xxT, no EN pin). The REF34xx family is pinouts: REF34xx and REF34xxT compatible to most of the ADC and DAC such as
2 Applications
ADS1287, DAC8802 and ADS1112. Stability and system reliability are further improved • Data acquisition systems by the low output-voltage hysteresis of the device • Analog I/O modules and low long-term output voltage drift. Furthermore, • Field transmitters the small size and low operating current of the • Lab & field instrumentation devices (95 μA) benefit portable and battery-powered • Servo drive control modules applications. • DC power supply, AC source, electronic load REF34xx is specified for the wide temperature range
Voltage Reference Recommendation for Data
of −40°C to +125°C.
Converters ADC Device Information DAC RESOLUTION VOLTAGE REFERENCE RESOLUTION
(1)
PART NAME PACKAGE
(1)
BODY SIZE (NOM)
(1) REF34xx TL431LI, TLV431 10-b 8-b SOT-23 (6) 2.90 mm × 1.60 mm REF34xxT LM4040, LM4050, REF30 12-b 10-b REF31, REF33, REF4132 14-b to 16-b 12-b (1) For all available packages, see the orderable addendum at the end of the data sheet REF34, REF50 16-b to 18-b 14-b to 16-b REF70 18-b+ 16-b+ (1) For specific ADC/DAC recommendations, see SNAA320 10 10 0.4 25°C 0.36 124 125°C - 0.32 -40°C Input Signal ADS1287 + 1 nF ) 0.28 REF (V e g 0.24 VIN lta o 0.2 t V CIN REF34xx COUT ou 0.16 1µF 10 µF rop D 0.12 0.08 0.04 Copyright © 2017, Texas Instruments Incorporated
Simplified Schematic
0 0 5 10 Load Current (mA)
Dropout vs. Current Load Over Temperature
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 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 Power Dissipation 8.5 Noise Performance 9 Detailed Description 9.1 Overview 9.2 Functional Block Diagram 9.3 Feature Description 9.3.1 Supply Voltage 9.3.2 Low Temperature Drift 9.3.3 Load Current 9.4 Device Functional Modes 9.4.1 EN Pin 9.4.2 Negative Reference Voltage 10 Application and Implementation 10.1 Application Information 10.2 Typical Application: Basic Voltage Reference Connection 10.2.1 Design Requirements 10.2.2 Detailed Design Procedure 10.2.2.1 Input and Output Capacitors 10.2.2.2 4-Wire Kelvin Connections 10.2.2.3 VIN Slew Rate Considerations 10.2.2.4 Shutdown/Enable Feature 10.2.3 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