Precision Series Sub-Band Gap Voltage Reference ADR130 Initial accuracy A grade: +0.70% (maximum) B grade: +0.35% (maximum) Maximum temperature coefficient A grade: 50 ppm/°C B grade: 25 ppm/°C CLOAD = 50 nF to 10 μF Output current: +4 mA/−2 mA Low operating current: 80 μA (typical) Output noise: 6 μV p-p @ 1.0 V output Input range: 2.0 V to 18 V Temperature range: −40°C to +125°C Tiny, Pb-free TSOT package PIN CONFIGURATION NC 1 ADR130 6 NC TOP VIEW 5 SET (Not to Scale) 4 VOUT VIN 3 GND 2 NC = NO CONNECT 06322-001 FEATURES Figure 1. 6-Lead TSOT (UJ-6) APPLICATIONS Battery-powered instrumentation Portable medical equipment Communication infrastructure equipment GENERAL DESCRIPTION The ADR130 is the industry’s first family of tiny, micropower, low voltage, high precision voltage references. Featuring 0.35% initial accuracy and 25 ppm/°C of temperature drift in the tiny TSOT-23 package, the ADR130 voltage reference only requires 80 μA for typical operation. The ADR130 design includes a patented temperature drift curvature correction technique that minimizes the nonlinearities in the output voltage vs. temperature characteristics. Available in the industrial temperature range of −40°C to +125°C, the ADR130 is housed in a tiny TSOT package. For 0.5 V output, tie SET (Pin 5) to VOUT (Pin 4). For 1.0 V output, tie SET (Pin 5) to GND (Pin 2). Rev. 0 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 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. ADR130 TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 12 Applications....................................................................................... 1 Power Dissipation Considerations........................................... 12 Pin Configuration............................................................................. 1 Input Capacitor........................................................................... 12 General Description ......................................................................... 1 Output Capacitor........................................................................ 12 Revision History ............................................................................... 2 Application Notes ........................................................................... 13 Specifications..................................................................................... 3 Basic Voltage Reference Connection ....................................... 13 Electrical Characteristics............................................................. 3 Stacking Reference ICs for Arbitrary Outputs ....................... 13 Absolute Maximum Ratings............................................................ 5 Negative Precision Reference Without Precision Resistors.. 14 Thermal Resistance ...................................................................... 5 Precision Current Source .......................................................... 14 ESD Caution.................................................................................. 5 Outline Dimensions ....................................................................... 15 Typical Performance Characteristics ............................................. 6 Ordering Guide .......................................................................... 15 Terminology .................................................................................... 11 REVISION HISTORY 10/06—Revision 0: Initial Version Rev. 0 | Page 2 of 16 ADR130 SPECIFICATIONS ELECTRICAL CHARACTERISTICS TA = 25°C, VIN = 2.0 V to 18 V, unless otherwise noted. SET (Pin 5) tied to VOUT (Pin 4). Table 1. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY ERROR A Grade B Grade TEMPERATURE COEFFICIENT A Grade B Grade LOAD REGULATION LINE REGULATION QUIESCENT CURRENT SHORT-CIRCUIT CURRENT TO GROUND VOLTAGE NOISE TURN-ON SETTLING TIME LONG-TERM STABILITY OUTPUT VOLTAGE HYSTERESIS Symbol VO Conditions Min Typ Max Unit 0.49650 0.49825 0.5 0.5 0.50350 0.50175 V V +3.50 +1.75 mV mV −0.13 50 25 +0.13 ppm/°C ppm/°C mV/mA −1.0 +1.0 mV/mA +40 150 ppm/V μA mA mA μV p-p μs ppm/1000 hours ppm VOERR −3.50 −1.75 TCVO −40°C < TA < +125°C 15 5 IQ −40°C < TA < +125°C; 3 V ≤ VIN ≤ 18 V; 0 mA < IOUT < 4 mA −40°C < TA < +125°C; 3 V ≤ VIN ≤ 18 V; −2 mA < IOUT < 0 mA 2.0 V to 18 V, IOUT = 0 mA −40°C < TA < +125°C, no load VIN = 2.0 V VIN = 18.0 V 0.1 Hz to 10 Hz To 0.1%, CL = 0.1 μF 1000 hours @ 25°C Rev. 0 | Page 3 of 16 −40 +10 75 15 50 3 80 100 150 ADR130 TA = 25°C, VIN = 2.0 V to 18 V, unless otherwise noted. SET (Pin 5) tied to GND (Pin 2). Table 2. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY ERROR A Grade B Grade TEMPERATURE COEFFICIENT A Grade B Grade LOAD REGULATION LINE REGULATION QUIESCENT CURRENT SHORT-CIRCUIT CURRENT TO GROUND VOLTAGE NOISE TURN-ON SETTLING TIME LONG-TERM STABILITY OUTPUT VOLTAGE HYSTERESIS Symbol VO Conditions Min Typ Max Unit 0.9930 0.9965 1.0 1.0 1.0070 1.0035 V V +7.0 +3.5 mV mV −0.25 50 25 +0.25 ppm/°C ppm/°C mV/mA −2.0 +2.0 mV/mA +40 150 ppm/V μA mA mA μV p-p μs ppm/1000 hours ppm VOERR −7.0 −3.5 TCVO −40°C < TA < +125°C 15 5 IQ −40°C < TA < +125°C; 3 V ≤ VIN ≤ 18 V; 0 mA < IOUT < 4 mA −40°C < TA < +125°C; 3 V ≤ VIN ≤ 18 V; −2 mA < IOUT < 0 mA 2.0 V to 18 V, IOUT = 0 mA −40°C < TA < +125°C, no load VIN = 2.0 V VIN = 18.0 V 0.1 Hz to 10 Hz To 0.1%, CL = 0.1 μF 1000 hours @ 25°C Rev. 0 | Page 4 of 16 −40 +10 85 15 50 6 80 100 150 ADR130 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter VIN to GND Internal Power Dissipation Storage Temperature Range Specified Temperature Range Lead Temperature, Soldering Vapor Phase (60 sec) Infrared (15 sec) THERMAL RESISTANCE Ratings 20 V 40 mW −65°C to +150°C −40°C to +120°C θJA is specified for the worst-case conditions, that is, a device soldered in a circuit board for surface-mount packages. Table 4. Thermal Resistance Package Type TSOT (UJ-6) 215°C 220°C 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. ESD CAUTION Rev. 0 | Page 5 of 16 θJA 186 θJC 67 Unit °C/W ADR130 1.004 0.5015 1.003 0.5010 1.002 0.5005 1.001 0.5000 1.000 0.4995 0.999 0.4990 0.998 0.4985 0.997 0.4980 –40 –25 –10 5 20 35 50 65 80 95 110 0.996 –40 125 06322-005 VOUT (V) 0.5020 06322-002 VOUT (V) TYPICAL PERFORMANCE CHARACTERISTICS –25 –10 5 Figure 2. VOUT vs. Temperature, VOUT = 0.5 V 35 10 10 9 9 8 8 7 7 6 5 4 3 2 80 95 110 125 6 5 4 3 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 0 06322-006 06322-003 0 1 0 5 10 15 20 25 30 35 40 45 50 –50 –45 –40 –35 –30 –25 –20 –15 –10 –5 TEMPERATURE COEFFICIENT (ppm/°C) 0 5 10 15 20 25 30 35 40 45 50 TEMPERATURE COEFFICIENT (ppm/°C) Figure 3. Temperature Coefficient, VOUT = 0.5 V Figure 6. Temperature Coefficient, VOUT = 1 V 2.0 2.0 –40°C –40°C +25°C 1.8 1.8 +125°C +25°C VIN_MIN (V) 1.6 1.4 1.6 +125°C 1.4 –1 0 1 2 3 4 1.0 –2 5 06322-007 1.2 1.2 06322-004 VIN_MIN (V) 65 2 1 1.0 –2 50 Figure 5. VOUT vs. Temperature, VOUT = 1 V NUMBER OF PARTS NUMBER OF PARTS 20 TEMPERATURE (°C) TEMPERATURE (°C) –1 0 1 2 3 4 LOAD CURRENT (mA) LOAD CURRENT (mA) Figure 4. Minimum Input Voltage vs. Load Current, VOUT = 0.5 V Figure 7. Minimum Input Voltage vs. Load Current, VOUT = 1 V Rev. 0 | Page 6 of 16 5 ADR130 160 160 120 +25°C 100 –40°C 80 60 40 2 3 4 5 6 7 8 120 +25°C 100 –40°C 80 60 40 0 9 10 11 12 13 14 15 16 17 18 06322-011 20 06322-008 20 0 +125°C 140 +125°C SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) 140 2 3 4 5 6 7 Figure 11. Supply Current vs. Input Voltage, VOUT = 1 V 6 6 TA = –40°C, +25°C, +125°C 5 5 SUPPLY CURRENT (mA) 4 3 2 1 3 2 1 06322-009 0 –2 4 –1 0 1 2 3 4 06322-012 SUPPLY CURRENT (mA) 9 10 11 12 13 14 15 16 17 18 Figure 8. Supply Current vs. Input Voltage, VOUT = 0.5 V TA = –40°C, +25°C, +125°C 0 –2 5 –1 0 LOAD CURRENT (mA) 2 3 4 5 Figure 12. Supply Current vs. Load Current, VOUT = 1 V 10 10 VIN = 2V TO 18V VIN = 2V TO 18V LINE REGULATION (ppm/V) 8 6 4 2 8 6 4 –25 –10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) 0 –40 06322-013 2 06322-010 0 –40 1 LOAD CURRENT (mA) Figure 9. Supply Current vs. Load Current, VOUT = 0.5 V LINE REGULATION (ppm/V) 8 INPUT VOLTAGE (V) INPUT VOLTAGE (V) –25 –10 5 20 35 50 65 80 95 110 TEMPERATURE (°C) Figure 10. Line Regulation vs. Temperature, VOUT = 0.5 V Figure 13. Line Regulation vs. Temperature, VOUT = 1 V Rev. 0 | Page 7 of 16 125 ADR130 0.08 0.03 0.02 0 –40 06322-014 0.01 –25 –10 5 20 35 50 65 80 95 110 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 –40 125 06322-017 0.04 LOAD REGULATION–SOURCE (mV/mA) LOAD REGULATION–SOURCE (mV/mA) 0.05 –25 –10 5 TEMPERATURE (°C) 1.0 2.0 0.9 1.8 0.7 0.6 0.5 0.4 0.3 0.1 5 20 35 50 65 65 80 95 110 125 1.6 1.4 1.2 1.0 0.8 0.6 0.4 06322-015 0.2 –10 50 80 95 110 06322-018 0.8 –25 35 Figure 17. Load Regulation (Source) vs. Temperature, VOUT = 1 V LOAD REGULATION–SINK (mV/mA) LOAD REGULATION–SINK (mV/mA) Figure 14. Load Regulation (Source) vs. Temperature, VOUT = 0.5 V 0 –40 20 TEMPERATURE (°C) 0.2 0 –40 125 –25 –10 5 TEMPERATURE (°C) 20 35 50 65 80 95 110 125 TEMPERATURE (°C) Figure 15. Load Regulation (Sink) vs. Temperature, VOUT = 0.5 V Figure 18. Load Regulation (Sink) vs. Temperature, VOUT = 1 V CIN = COUT = 0.1µF CIN = COUT = 0.1µF CH1 PEAK-TO-PEAK 5.72µV 06322-019 06322-016 2µV/DIV 2µV/DIV CH1 PEAK-TO-PEAK 3.16µV TIME (1s/DIV) TIME (1s/DIV) Figure 16. 0.1 Hz to 10 Hz Noise, VOUT = 0.5 V Figure 19. 0.1 Hz to 10 Hz Noise, VOUT = 1 V Rev. 0 | Page 8 of 16 ADR130 PEAK-TO-PEAK 291µV CIN = COUT = 0.1µF CIN = COUT = 0.1µF 06322-020 06322-023 50µV/DIV 50µV/DIV CH1 PEAK-TO-PEAK 172µV TIME (1s/DIV) TIME (1s/DIV) Figure 23. 10 Hz to 10 kHz Noise, VOUT = 1 V Figure 20. 10 Hz to 10 kHz Noise, VOUT = 0.5 V CIN = COUT = 0.1µF CIN = COUT = 0.1µF VIN = 1V/DIV VIN = 1V/DIV 06322-021 VOUT = 500mV/DIV 06322-024 VOUT 200mV/DIV TIME (40µs/DIV) TIME (40µs/DIV) Figure 24. Turn-On Response, VOUT = 1 V Figure 21. Turn-On Response, VOUT = 0.5 V VIN = 1V/DIV CIN = COUT = 0.1µF CIN = COUT = 0.1µF VOUT = 500mV/DIV 06322-022 VOUT = 200mV/DIV TIME (10ms/DIV) TIME (400µs/DIV) Figure 22. Turn-Off Response, VOUT = 0.5 V Figure 25. Turn-Off Response, VOUT = 1 V Rev. 0 | Page 9 of 16 06322-025 VIN = 1V/DIV ADR130 VIN = 1V/DIV CIN = COUT = 0.1µF CIN = COUT = 0.1µF VIN = 1V/DIV TIME (100µs/DIV) 06322-029 VOUT = 20mV/DIV 06322-026 VOUT = 20mV/DIV TIME (100µs/DIV) Figure 26. Line Transient Response, VOUT = 0.5 V Figure 29. Line Transient Response, VOUT = 1 V VLOAD = 1V/DIV CIN = COUT = 0.1µF RLOAD = 250Ω VLOAD = 0.5V/DIV CIN = COUT = 0.1µF RLOAD = 125Ω ILOAD = 0mA ILOAD = 0mA ILOAD = 4mA TIME (40µs/DIV) TIME (40µs/DIV) Figure 30. Load Transient Response (Source), VOUT = 1 V Figure 27. Load Transient Response (Source), VOUT = 0.5 V VLOAD = 200mV/DIV CIN = COUT = 0.1µF RLOAD = 125Ω 06322-030 VOUT = 20mV/DIV 06322-027 VOUT = 20mV/DIV ILOAD = 4mA VLOAD = 500mV/DIV CIN = COUT = 0.1µF RLOAD = 250Ω ILOAD = 2mA ILOAD = 2mA ILOAD = 0mA VOUT = 100mV/DIV 06322-028 VOUT = 100mV/DIV TIME (40µs/DIV) TIME (40µs/DIV) Figure 31. Load Transient Response (Sink), VOUT = 1 V Figure 28. Load Transient Response (Sink), VOUT = 0.5 V Rev. 0 | Page 10 of 16 06322-031 ILOAD = 0mA ADR130 TERMINOLOGY Temperature Coefficient Temperature coefficient is the change of output voltage with respect to the operating temperature change normalized by the output voltage at 25°C. This parameter is expressed in ppm/°C and is determined by TCVO [ppm/°C ] = VO (T2 ) − VO (T1 ) VO (25°C ) × (T2 − T1 ) × 10 Long-Term Stability Long-term stability is the typical shift of output voltage at 25°C on a sample of parts subjected to a test of 1000 hours at 25°C. ΔVO = VO (t 0 ) − VO (t1 ) ΔVO [ppm ] = 6 VO (t 0 ) − VO (t1 ) VO (t 0 ) × 106 where: where: VO(t0) = VO at 25°C at Time 0. VO(t1) = VO at 25°C after 1000 hours operating at 25°C. VO(25°C) = VO at 25°C. VO(T1) = VO at Temperature 1. VO(T2) = VO at Temperature 2. Line Regulation Line regulation is the change in the output due to a specified change in input voltage. This parameter accounts for the effects of self-heating. Line regulation is expressed in either %/V, ppm/V, or μV/ΔVIN. Load Regulation Load regulation is the change in output voltage due to a specified change in load current. This parameter accounts for the effects of self-heating. Load regulation is expressed in either mV/mA, ppm/mA, or dc output resistance (Ω). Thermal Hysteresis Thermal hysteresis is the change of output voltage after the device is cycled through temperatures from +25°C to −40°C to +125°C, then back to +25°C. This is a typical value from a sample of parts put through such a cycle. where: VO(25°C) = VO at 25°C. VOTC = VO at 25°C after temperature cycle from +25°C to −40°C to +125°C, then back to +25°C. Rev. 0 | Page 11 of 16 ADR130 THEORY OF OPERATION The ADR130 sub-band gap reference is the high performance solution for low supply voltage and low power applications. The uniqueness of this product lies in its architecture. POWER DISSIPATION CONSIDERATIONS The ADR130 is capable of delivering load currents to 4 mA with an input range from 3.0 V to 18 V. When this device is used in applications with large input voltages, care must be taken to avoid exceeding the specified maximum power dissipation or junction temperature, because this results in premature device failure. TJ − TA Input capacitors are not required on the ADR130. There is no limit for the value of the capacitor used on the input, but a 1 μF to 10 μF capacitor on the input improves transient response in applications where there is a sudden supply change. An additional 0.1 μF capacitor in parallel also helps reduce noise from the supply. OUTPUT CAPACITOR Use the following formula to calculate the maximum junction temperature or dissipation: PD = INPUT CAPACITOR The ADR130 requires a small 0.1 μF output capacitor for stability. Additional 0.1 μF to 10 μF capacitance in parallel can improve load transient response. This acts as a source of stored energy for a sudden increase in load current. The only parameter affected by the additional capacitance is turn-on time. θ JA where: TJ is the junction temperature. TA is the ambient temperature. PD is the device power dissipation. θJA is the device package thermal resistance. Rev. 0 | Page 12 of 16 ADR130 APPLICATION NOTES BASIC VOLTAGE REFERENCE CONNECTION The circuits in Figure 32 and Figure 33 illustrate the basic configuration for the ADR130 voltage reference. U2 ADR130 1 NC 2 GND 3 VIN NC 6 SET 5 VOUT 4 ADR130 NC 6 1 NC 0.1µF SET 5 2 GND INPUT VOUT2 0.1µF OUTPUT VOUT 4 3 VIN INPUT 0.1µF 06322-032 0.1µF U1 ADR130 1 NC 2 GND 3 VIN NC 6 SET 5 VOUT 4 Figure 32. Basic Configuration, VOUT = 0.5 V 0.1µF 06322-035 0.1µF VOUT1 ADR130 INPUT 1 NC 2 GND 3 NC 6 Figure 35. Stacking References with ADR130, VOUT1 = 0.5 V. VOUT2 = 1.5 V SET 5 OUTPUT VOUT 4 VIN Two reference ICs are used and fed from an unregulated input, VIN. The outputs of the individual ICs that are connected in series provide two output voltages, VOUT1 and VOUT2. VOUT1 is the terminal voltage of U1, and VOUT2 is the sum of this voltage and the terminal voltage of U2. U1 and U2 are chosen for the two voltages that supply the required outputs (see Table 5). For example, if U1 is set to have an output of 1 V or 0.5 V, the user can stack on top of U2 to get an output of 2 V or 1.5 V. 0.1µF 06322-033 0.1µF Figure 33. Basic Configuration, VOUT = 1 V STACKING REFERENCE ICs FOR ARBITRARY OUTPUTS Some applications may require two reference voltage sources that are a combined sum of the standard outputs. Figure 34 and Figure 35 show how these stacked output references can be implemented. U2 ADR130 1 NC 2 GND 3 VIN Table 5. Required Outputs U1/U2 ADR130/ADR130 ADR130/ADR130 NC 6 SET 5 VOUT 4 VOUT2 0.1µF 0.1µF INPUT U1 ADR130 1 NC 2 GND 3 VIN SET 5 VOUT 4 VOUT1 0.1µF 06322-034 0.1µF NC 6 Figure 34. Stacking References with ADR130, VOUT1 = 1.0 V, VOUT2 = 2.0 V Rev. 0 | Page 13 of 16 Comments See Figure 34 See Figure 35 VOUT1 1V 0.5 V VOUT2 2V 1.5 V ADR130 PRECISION CURRENT SOURCE NEGATIVE PRECISION REFERENCE WITHOUT PRECISION RESISTORS A negative reference is easily generated by adding an op amp, A1, and is configured as shown in Figure 36. VOUT is at virtual ground and, therefore, the negative reference can be taken directly from the output of the op amp. The op amp must be dual-supply, low offset, and rail-to-rail if the negative supply voltage is close to the reference output. +VDD U2 ADR130 1 NC 2 GND 3 VIN In low power applications, the need can arise for a precision current source that can operate on low supply voltages. The ADR130 can be configured as a precision current source (see Figure 37). The circuit configuration shown is a floating current source with a grounded load. The reference output voltage is bootstrapped across RSET, which sets the output current into the load. With this configuration, circuit precision is maintained for load currents ranging from the reference supply current, typically 85 μA, to approximately 4 mA. NC 6 ADR130 SET 5 VOUT 4 VIN 0.1µF 1 NC 2 GND 3 VIN NC 6 SET 5 VOUT 4 RSET A1 OP291 V– –VDD P1 06322-036 –VREF 1kΩ RL Figure 36. Negative Reference, −VREF = −0.5 V 06322-037 V+ Figure 37. ADR130 as a Precision Current Source Rev. 0 | Page 14 of 16 ADR130 OUTLINE DIMENSIONS 2.90 BSC 6 5 4 1 2 3 2.80 BSC 1.60 BSC PIN 1 INDICATOR 0.95 BSC 1.90 BSC *0.90 0.87 0.84 *1.00 MAX 0.50 0.30 0.10 MAX 0.20 0.08 SEATING PLANE 8° 4° 0° 0.60 0.45 0.30 *COMPLIANT TO JEDEC STANDARDS MO-193-AA WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS. Figure 38. 6-Lead Thin Small Outline Transistor Package [TSOT] (UJ-6) Dimensions shown in millimeters ORDERING GUIDE Model ADR130AUJZ-REEL7 1 ADR130AUJZ-R21 ADR130BUJZ-REEL71 ADR130BUJZ-R21 1 Temperature Coefficient (ppm/°C) 50 50 25 25 Temperature Range −40°C to +125°C −40°C to +125°C −40°C to +125°C −40°C to +125°C Package Description 6-Lead TSOT 6-Lead TSOT 6-Lead TSOT 6-Lead TSOT Z = Pb-free part. Rev. 0 | Page 15 of 16 Package Option UJ-6 UJ-6 UJ-6 UJ-6 Branding R0W R0W R0X R0X Ordering Quantity 3,000 250 3,000 250 ADR130 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06322-0-10/06(0) Rev. 0 | Page 16 of 16