Datasheet REF35 (Texas Instruments) - 5

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REF35 www.ti.com
SNAS809C – DECEMBER 2021 – REVISED SEPTEMBER 2024
6.5 Electrical Characteristics
At VIN = VREF + 0.5V, VEN = VIN, CL = 10µF, CIN = 0.1µF, IL = 0mA, minimum and maximum specifications at TA = –40℃ to 125℃, typical specifications TA = 25℃; unless otherwise noted
PARAMETER TEST CONDITION MIN TYP MAX UNIT ACCURACY AND DRIFT
Output voltage accuracy TA = 25℃ –0.05 0.05 % Output voltage –40℃ ≤ T temperature coefficient A ≤ 105℃ 12 ppm/℃
LINE AND LOAD REGULATION
VREF < 2.5V; VIN = VREF + VDO to VINMAX; –40℃ ≤ ΔV T REF/ A ≤ 105℃ 40 160 ppm/V Line regulation ΔVIN VREF ≥ 2.5V; VIN = VREF + VDO to VINMAX; –40℃ ≤ TA ≤ 105℃ 40 120 ppm/V IL = 0mA to 10mA, Source 20 60 ppm/mA VIN = VREF + VDO ΔVREF/ΔIL Load regulation IL = 0mA to 5mA, Sink 40 350 ppm/mA VIN = VREF + VDO
POWER SUPPLY
VIN Input voltage (1) VREF + VDO 6 V TA = 25℃ 0.65 0.9 Active mode –40℃ ≤ TA ≤ 85℃ 1.3 IQ Quiescent current –40℃ ≤ TA ≤ 125℃ 2.6 µA TA = 25℃ 0.1 Shutdown mode –40℃ ≤ TA ≤ 125℃ 0.5 Active mode (EN = 1 or Float) 0.7 x VIN VEN Enable pin voltage V Shutdown mode (EN = 0) 0.3 x VIN IEN Enable pin current VEN = VIN 0.05 0.1 uA IL = 5mA 120 VDO Dropout voltage mV IL = 10mA 250 Short circuit current, ISC V Sourcing REF = 0V, TA = 25℃ 33 mA Short circuit current, ISC V Sinking REF = VIN V, TA = 25℃ 21 mA
TURN-ON TIME
tON Turn-on time (2) 0.1% settling, CL = 1µF, VREF = 2.5V 2 ms
NOISE
en Output voltage noise ƒ = 10Hz to 1kHz, CL = 1µF 0.7 ppmrms ƒ = 0.1Hz to 10Hz, VREF ≥ 2.5V 3.8 ppmp-p enp-p Low-frequency noise ƒ = 0.1Hz to 10Hz, VREF < 2.5V 3.3 ppmp-p
HYSTERESIS AND LONG-TERM STABILITY
Long-term stability 0 to 1000h at 35°C 40 ppm Output voltage 25°C, –40°C, 105°C, 25°C (cycle 1) 70 ppm hysteresis Output voltage 25°C, –40°C, 105°C, 25°C (cycle 2) 20 ppm hysteresis Output voltage 25°C, –40°C, 85°C, 25°C (cycle 1) 50 ppm hysteresis Output voltage 25°C, –40°C, 85°C, 25°C (cycle 2) 13 ppm hysteresis
STABLE CAPACITANCE RANGE
Copyright © 2024 Texas Instruments Incorporated Submit Document Feedback 5 Product Folder Links: REF35 Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Device Comparison 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 Electrical Characteristics 6.6 Electrical Characteristics YBH package 6.7 Typical Characteristics 7 Parameter Measurement Information 7.1 Solder Heat Shift 7.2 Temperature Coefficient 7.3 Long-Term Stability 7.4 Thermal Hysteresis 7.5 Noise Performance 7.5.1 Low-Frequency (1/f) Noise 7.5.2 Broadband Noise 7.6 Power Dissipation 8 Detailed Description 8.1 Overview 8.2 Functional Block Diagram 8.3 Feature Description 8.3.1 Supply Voltage 8.3.2 EN Pin 8.3.3 NR Pin 8.4 Device Functional Modes 8.4.1 Basic Connections 8.4.2 Start-Up 8.4.3 Output Transient Behavior 9 Application and Implementation 9.1 Application Information 9.2 Typical Applications 9.2.1 Negative Reference Voltage 9.2.2 Precision Power Supply and Reference 9.2.2.1 Design Requirements 9.2.2.2 Detailed Design Procedure 9.2.2.2.1 Selection of Reference 9.2.2.2.2 Input and Output Capacitors 9.2.2.2.3 Selection of ADC 9.2.2.3 Application Curves 9.3 Power Supply Recommendations 9.4 Layout 9.4.1 Layout Guidelines 9.4.2 Layout Examples 10 Device and Documentation Support 10.1 Documentation Support 10.1.1 Related Documentation 10.2 Receiving Notification of Documentation Updates 10.3 Support Resources 10.4 Trademarks 10.5 Electrostatic Discharge Caution 10.6 Glossary 11 Revision History 12 Mechanical, Packaging, and Orderable Information