High Temperature, Low Drift, Micropower 2.5 V Reference ADR225 Data Sheet PIN CONFIGURATION Extreme high temperature operation -40C to +210C, 8-lead FLATPACK -40C to +175C, 8-lead SOIC Temperature coefficient 40 ppm/C, 8-lead FLATPACK 10 ppm/C, 8-lead SOIC High output current: 10 mA Low supply current: 50 A maximum Initial accuracy: 0.4% (10 mV maximum), 8-lead SOIC Low dropout voltage Wide supply range: 3.3 V to 16 V 8 NC VS 2 ADR225 7 NC NC 3 TOP VIEW (Not to Scale) 6 OUTPUT 5 NC NC 1 GND 4 NOTES 1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN. 11525-001 FEATURES Figure 1. Pin Configuration for SOIC and FLATPACK Packages APPLICATIONS Down-hole drilling and instrumentation Avionics Heavy industrial High temperature environments GENERAL DESCRIPTION The ADR225 is a precision 2.5 V band gap voltage reference specified for a high temperature operation of 175C and 210C. It uses a micropower core topology and laser trimming of highly stable, thin film resistors to achieve a temperature coefficient of 30 ppm/C (maximum) up to 175C and an initial accuracy of 0.4% (10 mV maximum). A maximum operating current of 50 A and a low dropout voltage allow the ADR225 to function very well in battery-powered equipment. The ADR225 voltage reference is offered in an 8-lead SOIC package with an operating temperature range of -40C to +175C. Rev. B It is also available in an 8-lead ceramic flat pack (FLATPACK) with an operating temperature range of -40C to +210C. Both devices are designed for robustness at extreme temperatures and are qualified for 1000 hours of operation at the maximum temperature rating. The ADR225 is a member of a growing series of high temperature qualified products offered by Analog Devices, Inc. For a complete selection table of the available high temperature products, see the high temperature product list and qualification data available at www.analog.com/hightemp. Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 (c)2013 Analog Devices, Inc. All rights reserved. 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ADR225 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Predicted Lifetime vs. Operating Temperature .........................4 Applications ....................................................................................... 1 Thermal Resistance .......................................................................4 Pin Configuration ............................................................................. 1 ESD Caution...................................................................................4 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................5 Revision History ............................................................................... 2 Theory of Operation .........................................................................9 Specifications..................................................................................... 3 Basic Voltage Reference Connections ........................................9 Electrical Characteristics ............................................................. 3 Outline Dimensions ....................................................................... 10 Absolute Maximum Ratings............................................................ 4 Ordering Guide .......................................................................... 10 REVISION HISTORY 11/13--Rev. A to Rev. B Change to Features Section ............................................................. 1 Added Caption to Figure 1 .............................................................. 1 Changes to Table 1 ............................................................................ 3 Added Figure 6, Figure 7, Figure 8, Figure 12, Figure 13, Figure 14, Figure 18, and Figure 19; Renumbered Sequentially ....................................................................................... 5 9/13--Rev. 0 to Rev. A Changes to Data Sheet Title and Added Wide Supply Range: 3.3 V to 16 V to Features Section .............................................................. 1 Changed Supply Voltage from -0.3 V to +15 V to -0.3 V to +18 V; Table 2 .................................................................................... 4 7/13--Revision 0: Initial Version Rev. B | Page 2 of 12 Data Sheet ADR225 SPECIFICATIONS ELECTRICAL CHARACTERISTICS VS = 3.3 V, VOUT = 2.5 V, TMIN < TA < TMAX, unless otherwise noted. Table 1. Parameter SUPPLY CURRENT INITIAL ACCURACY 1 TEMPERATURE COEFFICIENT 2 REGULATION Line Regulation Load Regulation 3 VOLTAGE Dropout Voltage Noise Voltage 1 2 Symbol ISY VO TCVOUT Test Conditions/Comments No load IOUT = 0 mA IOUT = 0 mA 8-Lead SOIC -40C TA +175C Min Typ Max 30 50 2 10 10 30 VOUT/VIN VOUT/VLOAD 3.0 V VS 15 V, IOUT = 0 mA VS = 5.0 V, 0 mA IOUT 10 mA 0.025 0.025 VS - VOUT eN ILOAD = 10 mA 0.1 Hz to 10 Hz 25 Unit A mV ppm/C 0.25 0.25 1.5 1.5 mV/V mV/mA 1.00 V V p-p 0.1 0.1 1.00 For proper operation, a 1 F capacitor is required between the OUTPUT pin and the GND pin of the device. TCVOUT is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/C. TCVOUT = (VMAX - VMIN)/VOUT(TMAX - TMIN) 3 8-Lead FLATPACK -40C TA +210C Min Typ Max 40 60 5 60 40 80 Load regulation specification includes the effect of self-heating. Rev. B | Page 3 of 12 25 ADR225 Data Sheet ABSOLUTE MAXIMUM RATINGS 100k Table 2. -40C to +175C -40C to +210C -40C to +200C -40C to +245C 300C 10k 1k 100 10 1 120 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. PREDICTED LIFETIME vs. OPERATING TEMPERATURE Comprehensive reliability testing is performed on the ADR225. Product lifetimes at extended operating temperature are obtained using high temperature operating life (HTOL). Lifetimes are predicted from the Arrhenius equation, taking into account potential design and manufacturing failure mechanism assumptions. HTOL is performed to JEDEC JESD22-A108. A minimum of three wafer fab and assembly lots are processed through HTOL at the maximum operating temperature. Comprehensive reliability testing is performed on all Analog Devices, Inc., high temperature (HT) products. 130 140 150 160 170 180 190 210 200 OPERATING TEMPERATURE (C) 11525-021 Rating -0.3 V to +18 V -0.3 V to VS + 0.3 V -65C to +150C PREDICTED LIFETIME (Hours) Parameter Supply Voltage OUTPUT to GND Storage Temperature Range Operating Temperature Range 8-Lead SOIC 8-Lead FLATPACK Junction Temperature Range 8-Lead SOIC 8-Lead FLATPACK Lead Temperature (Soldering 60 sec) Figure 2. Predicted Lifetime vs. Operating Temperature THERMAL RESISTANCE JA is specified for worst-case conditions; that is, JA is specified for the device soldered in the circuit board. Table 3. Package Type 8-Lead SOIC 8-Lead FLATPACK ESD CAUTION Rev. B | Page 4 of 12 JA 121 100 JC 43 15 Unit C/W C/W Data Sheet ADR225 TYPICAL PERFORMANCE CHARACTERISTICS VS = 3.3 V, VOUT = 2.5 V, TMIN TA TMAX for 8-lead SOIC package, unless otherwise noted. 2.56 2.510 2.505 2.54 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.55 2.500 2.53 2.52 2.51 2.495 2.50 2.49 11525-100 20 35 50 65 80 95 110 125 140 155 170 TEMPERATURE (C) -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 5 11525-004 2.490 -40 -25 -10 TEMPERATURE (C) Figure 6. Output Voltage (VOUT) vs. Temperature, FLATPACK Package Figure 3. Output Voltage (VOUT) vs. Temperature 7 18 16 6 NUMBER OF UNITS NUMBER OF UNITS 14 12 10 8 6 5 4 3 2 4 1 2 -18 -12 -6 0 6 12 18 24 30 TCVOUT (ppm/C) 0 TCVOUT (ppm/C) Figure 4. TCVOUT Distribution, -40C to +175C 11525-101 -24 0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 -30 11525-005 0 Figure 7. TCVOUT Distribution, -40C to +210C, FLATPACK Package 70 25 60 20 NUMBER OF PARTS 40 30 20 15 10 5 0 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 OUTPUT VOLTAGE ACCURACY (%) 0.5 0.6 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 OUTPUT VOLTAGE ACCURACY (%) 2.4 11525-102 10 11525-006 NUMBER OF PARTS 50 Figure 8. Output Voltage Accuracy at 210C, FLATPACK Package Figure 5. Output Voltage Accuracy at 175C Rev. B | Page 5 of 12 ADR225 Data Sheet 50 60 45 55 50 SUPPLY CURRENT (A) 35 30 25 20 15 10 45 40 35 30 25 20 15 10 5 20 35 50 65 80 95 110 125 140 155 170 TEMPERATURE (C) -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 5 11525-007 5 0 -40 -25 -10 TEMPERATURE (C) Figure 9. Supply Current (ISY) vs. Temperature 11525-103 SUPPLY CURRENT (A) 40 Figure 12. Supply Current (ISY) vs. Temperature, FLATPACK Package 0 50 -5 -50 LOAD REGULATION (ppm/mA) LOAD REGULATION (ppm/mA) 0 -10 -15 -20 -25 -100 -150 -200 -250 -300 -350 -400 -450 TEMPERATURE (C) 11525-104 TEMPERATURE (C) -500 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 20 35 50 65 80 95 110 125 140 155 170 11525-009 -30 -40 -25 -10 5 Figure 13. Load Regulation vs. Temperature (ILOAD = 0 mA to 10 mA), FLATPACK Package Figure 10. Load Regulation vs. Temperature (ILOAD = 0 mA to 10 mA) 500 60 450 LINE REGULATION (ppm/V) 400 40 30 20 10 350 300 250 200 150 100 50 0 0 20 35 50 65 80 95 110 125 140 155 170 TEMPERATURE (C) TEMPERATURE (C) Figure 11. Line Regulation vs. Temperature Figure 14. Line Regulation vs. Temperature, FLATPACK Package Rev. B | Page 6 of 12 11525-105 5 -50 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 -10 -40 -25 -10 11525-008 LINE REGULATION (ppm/V) 50 Data Sheet 1.0 ADR225 1.0 -40C +25C +175C 0.9 0.8 DROPOUT VOLTAGE (V) 0.7 0.6 0.5 0.4 0.3 0.7 0.6 0.5 0.4 0.3 0.2 0.2 0.1 0.1 2 4 6 8 10 12 LOAD CURRENT (mA) 0 Figure 15. Dropout Voltage vs. Load Current (ILOAD) 0 2 4 6 8 10 12 LOAD CURRENT (mA) 11525-106 0 11525-010 DROPOUT VOLTAGE (V) 0.8 0 -40C +25C +210C 0.9 Figure 18. Dropout Voltage vs. Load Current (ILOAD), FLATPACK Package 2.508 2.540 UNIT 1 UNIT 3 UNIT 5 2.535 2.506 OUTPUT VOLTAGE (V) 2.504 2.502 2.500 2.525 2.520 2.515 2.510 2.505 2.498 55 70 85 100 115 130 145 160 2.495 25 11525-011 2.496 40 175 TEMPERATURE (C) 40 55 70 85 100 115 130 145 160 175 190 205 TEMPERATURE (C) Figure 16. Thermal Hysteresis, ILOAD = 0 mA 11525-107 2.500 Figure 19. Thermal Hysteresis, ILOAD = 0 mA, FLATPACK Package VIN = 5V/DIV CIN = COUT = 1F RL = 10k VIN = 2V/DIV COUT = 1F NO LOAD 10V 5V 0V 1 VOUT = 1V/DIV 1 VOUT = 200mV/DIV 2 CH1 2V B W CH2 1V M100s A CH1 4.4V CH1 5V Figure 17. Power-On Response (see Figure 25) B W CH2 200mV M200s A CH1 7.3V Figure 20. Line Transient Response (see Figure 25) Rev. B | Page 7 of 12 11525-014 2 11525-013 OUTPUT VOLTAGE (V) 2.530 ADR225 Data Sheet LOAD CURRENT 10.24 0mA OUTPUT IMPEDANCE () 5.12 10mA 1 VOUT = 20mV/DIV COUT = 1F 2 2.56 1.28 0.64 0.32 0.16 0.08 0.04 CH2 20mV M100s A CH1 1.32V 0.01 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 23. Output Impedance (ZOUT) vs. Frequency, CIN = COUT = 1 F Figure 21. Load Transient Response -20 -40 -60 -80 -100 -120 10 100 1k 10k 100k FREQUENCY (Hz) 1M 10M 11525-015 POWER SUPPLY REJECTION RATIO (dB) 0 Figure 22. Power Supply Rejection Ratio (PSRR) vs. Frequency, CLOAD = 1 F Rev. B | Page 8 of 12 11525-020 CH1 1V 11525-012 0.02 Data Sheet ADR225 THEORY OF OPERATION NC 1 VS The circuit shown in Figure 24 is the basic configuration for the ADR225. Note that a 10 F and 0.1 F bypass network on the input and at least a 1 F bypass capacitor on the output are required for proper device operation. It is recommended that no connections be made to Pin 1, Pin 3, Pin 5, Pin 7, and Pin 8. 10F 0.1F 8 NC 7 NC 2 NC 3 ADR225 6 4 OUTPUT + 1F TANT 5 NC + 1F 11525-002 BASIC VOLTAGE REFERENCE CONNECTIONS NC = NO CONNECT. Figure 24. Basic Voltage Reference Connections V+ VCC +5V +5V U1 ADR225 C2 0.1F GND + C3 1F C4 0.1F R3 2.5k +VS AD8634 +IN A +5V -IN A U3 AD8229 +IN -5V V- -IN R1 2.5k Figure 25. Typical High Temperature Resistance Temperature Detector (RTD) Signal Conditioning Circuit Rev. B | Page 9 of 12 VOUT RTD -5V -VS 11525-017 OUTPUT + C1 10F U2A R2 2.5k VS ADR225 Data Sheet OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 1 5 6.20 (0.2441) 5.80 (0.2284) 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) COPLANARITY 0.10 SEATING PLANE 0.50 (0.0196) 0.25 (0.0099) 45 8 0 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) COMPLIANT TO JEDEC STANDARDS MS-012-AA 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. 012407-A 8 4.00 (0.1574) 3.80 (0.1497) Figure 26. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) 1.00 0.260 0.255 SQ 0.250 0.195 0.190 SQ 0.185 1 0.155 0.150 0.145 8 4 0.012 R TYP 0.006 0.005 0.004 0.035 TYP 0.019 0.017 0.015 5 TOP VIEW 0.05 TYP IDEX MARK 0.091 0.083 0.075 END VIEW 0.026 MIN 0.054 0.044 0.034 BOTTOM VIEW 0.024 0.007 MIN SIDE VIEW 03-26-2013-A 0.053 0.050 0.047 0.175 Figure 27. 8-Lead Ceramic Flat Package [FLATPACK] (F-8-2) Dimensions shown in inches ORDERING GUIDE Model 1 ADR225HRZN ADR225HFZ 1 Temperature Range -40C to +175C -40C to +210C Package Description 8-Lead Standard Small Outline Package [SOIC_N] 8-Lead Ceramic Flat Package [FLATPACK] Z = RoHS Compliant Part. Rev. B | Page 10 of 12 Package Option R-8 F-8-2 Data Sheet ADR225 NOTES Rev. B | Page 11 of 12 ADR225 Data Sheet NOTES (c)2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D11525-0-11/13(B) Rev. B | Page 12 of 12