ADR291 Analog Devices, ADR291 Datasheet
ADR291
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ADR291 Summary of contents
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... The ADR291/ADR292 family is a series of voltage references providing stable and accurate output voltages from supplies as low as 2.8 V for the ADR291. Output voltage options are 2.5 V and 4.096 V for the ADR291 and ADR292, respectively. Quiescent current is only 12 μA, making these devices ideal for battery-powered instrumentation. Three electrical grades are available offering initial output accuracies of ± ...
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... ADR291/ADR292 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Connection Diagrams...................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 ADR291 Electrical Specifications............................................... 3 ADR292 Electrical Specifications............................................... 4 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configurations and Function Descriptions ........................... 7 Typical Performance Characteristics ............................................. 8 Terminology .................................................................................... 12 Theory of Operation ...................................................................... 13 REVISION HISTORY 12/07—Rev Rev. E Changes to Features.......................................................................... 1 Changes to Figure 34...................................................................... 14 3/06— ...
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... SPECIFICATIONS ADR291 ELECTRICAL SPECIFICATIONS 25°C, unless otherwise noted Table 2. Parameter Symbol E GRADE Output Voltage V OUT Initial Accuracy V OERR F GRADE Output Voltage V OUT Initial Accuracy V OERR G GRADE Output Voltage V OUT Initial Accuracy V OERR LINE REGULATION E/F Grades ∆V OUT ...
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... ADR291/ADR292 −40°C to+125°C, unless otherwise noted Table 4. Parameter TEMPERATURE COEFFICIENT E Grade F Grade G Grade LINE REGULATION E/F Grades G Grade LOAD REGULATION E/F Grades G Grade SUPPLY CURRENT THERMAL HYSTERESIS ADR292 ELECTRICAL SPECIFICATIONS 25°C, unless otherwise noted. ...
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... OUT LOAD S OUT 25° −40°C ≤ T ≤ +125° 8-lead SOIC, 8-lead TSSOP OUT-HYS Rev Page ADR291/ADR292 Min Typ Max 125 50 150 20 125 30 150 Min Typ ...
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... Supply Voltage Output Short-Circuit Duration to GND Storage Temperature Range Packages Operating Temperature Range ADR291/ADR292 Junction Temperature Range Packages Lead Temperature (Soldering, 60 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...
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... OUT (Not to Scale) GND CONNECT Figure 5. 8-Lead TSSOP (RU-8) TO-92 Mnemonic N GND 3 V OUT Rev Page ADR291/ADR292 GND V V OUT ADR291 TOP VIEW (Not to Scale) Figure 6. 3-Lead TO-92 (T-3) Description No Connect Input Voltage Ground Output Voltage ...
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... +25° –40° INPUT VOLTAGE (V) Figure 9. ADR291 Quiescent Current vs. Input Voltage 14 3 TYPICAL PARTS 100 125 14 3 TYPICAL PARTS 100 125 Figure 11. ADR291/ADR292 Supply Current vs. Temperature 100 ...
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... LOAD CURRENT (mA) Figure 15. ADR292 Minimum Input-Output Voltage Differential vs. Load Current 200 OUT 160 120 80 40 ADR292 0 100 125 –50 Figure 16. ADR291 Load Regulation vs. Temperature 200 160 120 –50 4.0 4.5 5.0 Figure 17. ADR292 Load Regulation vs. Temperature 0 –250 –500 –750 –1000 –1250 –1500 – ...
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... T = +25° +125° μ 15V 25°C A 1000 1000 Rev Page 100 Figure 22. ADR291 0 Noise 100 1k FREQUENCY (Hz) Figure 23. ADR291 Output Impedance vs. Frequency ...
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... Rev Page ADR291/ADR292 500 μ 5mA L 1V Figure 28. ADR291 Turn-On Time I = 0mA 10ms L 1V Figure 29. ADR291 Turn-Off Time TEMPERATURE +25 °C ≥ –40°C ≥ +85°C ≥ +25°C V DEVIATION (ppm) OUT Figure 30. Typical Hysteresis for the ADR291 Product ...
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... ADR291/ADR292 TERMINOLOGY Line Regulation Line regulation refers to the change in output voltage due to a specified change in input voltage. It includes the effects of self- heating. Line regulation is expressed as percent-per-volt, parts- per-million-per-volt, or microvolts-per-volt change in input voltage. Load Regulation The change in output voltage is due to a specified change in load current and includes the effects of self-heating ...
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... the positive temperature coefficient correction current. PTAT The various versions of the ADR291/ADR292 family are created by on-chip adjustment of R1 and R3 to achieve 2.500 V or 4.096 V at the reference output. The process used for the XFET reference also features vertical NPN and PNP transistors, the latter of which are used as output devices to provide a very low dropout voltage ...
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... PRECISION CURRENT SOURCE In low power applications, there is often a need for a precision current source that can operate on low supply voltages. As shown in Figure 34, any one of the devices in the ADR291/ ADR292 family of references can be configured as a precision current source. The circuit configuration illustrated is a floating current source with a grounded load. The reference’ ...
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... ADR291/ADR292, make it ideal for low power applica- tions such as handheld, battery-operated equipment. One such ADC for which the ADR291 is well suited is the AD7701. Figure 37 shows the ADR291 used as the reference for this converter. The AD7701 is a 16-bit ADC with on-chip ...
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... ADR291/ADR292 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 0.25 (0.0098) 0.10 (0.0040) 0.51 (0.0201) COPLANARITY 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING PLANE 0.17 (0.0067) COMPLIANT TO JEDEC STANDARDS MS-012-A A CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. ...
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... ADR291ERZ 1 2.50 1 ADR291ERZ-REEL7 2.50 ADR291FR 2.50 ADR291FR-REEL 2.50 ADR291FR-REEL7 2.50 1 ADR291FRZ 2.50 1 ADR291FRZ-REEL 2.50 1 ADR291FRZ-REEL7 2.50 ADR291GR 2.50 ADR291GR-REEL 2.50 ADR291GR-REEL7 2.50 1 ADR291GRZ 2.50 1 ADR291GRZ-REEL 2.50 1 ADR291GRZ-REEL7 2.50 ADR291GRU 2.50 ADR291GRU-REEL7 2.50 1 ADR291GRUZ 2.50 1 ADR291GRUZ-REEL 2.50 ADR291GRUZ-REEL7 1 2.50 ADR291GT9 2.50 ADR291GT9-REEL 2.50 1 ADR291GT9Z 2.50 ADR292ER 4.096 ADR292ER-REEL 4.096 1 ADR292ERZ 4.096 1 ADR292ERZ-REEL 4.096 ADR292FR 4.096 ADR292FR-REEL 4.096 ADR292FR-REEL7 4.096 1 ADR292FRZ 4.096 1 ADR292FRZ-REEL 4.096 ...
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... ADR291/ADR292 NOTES Rev Page ...
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... NOTES Rev Page ADR291/ADR292 ...
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... ADR291/ADR292 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00163-0-12/07(E) Rev Page ...