SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 D Operating Current Range D D D D D LM285-1.2 . . . D PACKAGE LM385-1.2 . . . D, PS, OR PW PACKAGE LM385B-1.2 . . . D OR PW PACKAGE (TOP VIEW) − LM285 . . . 10 µA to 20 mA − LM385 . . . 15 µA to 20 mA − LM385B . . . 15 µA to 20 mA 1% and 2% Initial Voltage Tolerance Reference Impedance − LM385 . . . 1 Ω Max at 25°C − All Devices . . . 1.5 Ω Max Over Full Temperature Range Very Low Power Consumption Applications − Portable Meter References − Portable Test Instruments − Battery-Operated Systems − Current-Loop Instrumentation − Panel Meters Interchangeable With Industry Standard LM285-1.2 and LM385-1.2 NC NC NC ANODE 1 8 2 7 3 6 4 5 CATHODE NC NC NC NC − No internal connection LM285-1.2, LM385-1.2, LM385B-1.2 . . . LP PACKAGE (TOP VIEW) ANODE CATHODE NC NC − No internal connection description/ordering information These micropower, two-terminal, band-gap voltage references operate over a 10-µA to 20-mA current range and feature exceptionally low dynamic impedance and good temperature stability. On-chip trimming provides tight voltage tolerance. The band-gap reference for these devices has low noise and long-term stability. ORDERING INFORMATION TA VZ TOLERANCE SOIC (D) SOP (PS) 2% TO-226 / TO-92 (LP) TSSOP (PW) 0°C 0 C to 70 70°C C SOIC (D) 1% TO-226 / TO-92 (LP) TSSOP (PW) −40°C −40 C to 85 85°C C 1% ORDERABLE PART NUMBER PACKAGE† SOIC (D) Tube of 75 LM385D-1-2 Reel of 2000 LM385DR-1-2 Reel of 2000 LM385PSR-1-2 Tube of 1000 LM385LP-1-2 Reel of 2000 LM385LPR-1-2 Tube of 150 LM385PW-1-2 Reel of 2000 LM385PWR-1-2 Tube of 75 LM385BD-1-2 Reel of 2000 LM385BDR-1-2 Tube of 1000 LM385BLP-1-2 Reel of 2000 LM385BLPR-1-2 Tube of 150 LM385BPW-1-2 Reel of 2000 LM385BPWR-1-2 Tube of 75 LM285D-1-2 Reel of 2000 LM285DR-1-2 TOP-SIDE MARKING 385-12 L385-12 385-12 385-12 385B12 385-12 385B12 285-12 TO-226 / TO-92 (LP) Tube of 1000 LM285LP-1-2 285-12 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright 2005, Texas Instruments Incorporated !"#$ % &'!!($ #% )'*+&#$ ,#$( !,'&$% &!" $ %)(&&#$% )(! $-( $(!"% (.#% %$!'"($% %$#,#!, /#!!#$0 !,'&$ )!&(%%1 ,(% $ (&(%%#!+0 &+',( $(%$1 #++ )#!#"($(!% POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 description/ordering information (continued) The design makes these devices exceptionally tolerant of capacitive loading and, thus, easier to use in most reference applications. The wide dynamic operating temperature range accommodates varying current supplies, with excellent regulation. The extremely low power drain of this series makes them useful for micropower circuitry. These voltage references can be used to make portable meters, regulators, or general-purpose analog circuitry, with battery life approaching shelf life. The wide operating current range allows them to replace older references with tighter-tolerance parts. symbol ANODE CATHODE schematic CATHODE Q13 7.5 kΩ 600 kΩ Q12 Q7 200 kΩ Q4 Q11 50 kΩ Q3 Q10 Q1 300 kΩ 20 pF Q2 20 pF Q9 Q5 Q6 Q8 Q14 100 kΩ 500 Ω 60 kΩ ANODE NOTE A: Component values shown are nominal. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Reverse current, IR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Forward current, IF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Package thermal impedance, θJA (see Notes 1 and 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W LP package . . . . . . . . . . . . . . . . . . . . . . . . . . 140°C/W PS package . . . . . . . . . . . . . . . . . . . . . . . . . . . 95°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . 149°C/W Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to 150°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) − TA)/θJA. Operation at the absolute maximum TJ of 150°C can affect reliability. 2. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions IZ Reference current TA Operating free-air temperature range LM285-1.2 LM385-1.2, LM385B-1.2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MIN MAX 0.01 20 −40 85 0 70 UNIT mA °C 3 SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 electrical characteristics at specified free-air temperature PARAMETER LM285-1.2 LM385-1.2 LM385B-1.2 TEST CONDITIONS TA† MIN TYP MAX MIN TYP MAX MIN TYP MAX 1.223 1.235 1.247 1.21 1.235 1.26 1.223 1.235 1.247 VZ Reference voltage IZ = I(min) to 20 mA‡ 25°C αVZ Average temperature coefficient of reference voltage§ IZ = I(min) to 20 mA‡ Full range ∆VZ Change in reference voltage with current ∆VZ/∆t Long-term change in reference voltage IZ(min) Minimum reference current zz Reference impedance Vn IZ = 100 µA, Broadband f = 10 Hz to noise voltage 10 kHz IZ = I(min) to 1 mA‡ IZ = 1 mA to 20 mA IZ = 100 µA 25°C ±20 ±20 1 1 1 1.5 1.5 1.5 25°C 12 20 20 Full range 30 30 30 25°C 25°C ±20 ±20 10 8 15 8 15 0.2 0.6 0.4 1 0.4 1 1.5 60 1.5 60 1.5 60 mV ppm/khr 8 Full range 25°C ±20 V ppm/°C Full range Full range IZ = 100 µA, f = 25 Hz ±20 UNIT µA Ω µV † Full range is −40°C to 85°C for the LM285-1.2 and 0°C to 70°C for the LM385-1.2 and LM385B-1.2. ‡ I(min) = 10 µA for the LM285-1.2 and 15 µA for the LM385-1.2 and LM385B-1.2 § The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified temperature range. 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 TYPICAL CHARACTERISTICS† REFERENCE VOLTAGE CHANGE vs REVERSE CURRENT REVERSE CURRENT vs REVERSE VOLTAGE ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ 16 100 10 1 0.1 0 0.2 0.4 0.6 ÎÎÎÎÎÎ ÎÎÎÎÎÎ TA = −55°C to 125°C ∆V Z − Reference Voltage Change − mV I R − Reverse Current − µA TA = −55°C to 125°C 0.8 1 1.2 12 8 4 0 −4 0.01 1.4 0.1 1 10 100 IR − Reverse Current − mA VR − Reverse Voltage − V Figure 1 Figure 2 REFERENCE VOLTAGE vs FREE-AIR TEMPERATURE FORWARD VOLTAGE vs FORWARD CURRENT ÎÎÎÎ ÎÎÎÎ 1.2 1.245 V Z − Reference Voltage − V V F − Forward Voltage − V TA = 25°C 0.8 0.4 1.24 1.235 1.23 1.225 0 0.01 0.1 1 10 100 1.220 −55 −35 −15 5 25 45 65 85 105 125 TA − Free-Air Temperature − °C IF − Forward Current − mA Figure 3 Figure 4 † Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 TYPICAL CHARACTERISTICS† NOISE VOLTAGE vs FREQUENCY REFERENCE IMPEDANCE vs REFERENCE CURRENT 700 100 600 Vn − Noise Voltage − nV/ √ Hz Vn zz − Reference Impedance − Ω f = 25 Hz TA = −55°C to 125°C 10 1 IZ = 100 µA TA = 25°C 500 400 300 200 100 0.1 0.01 0.1 1 10 0 10 100 100 1k Figure 6 Figure 5 OUTPUT NOISE VOLTAGE vs CUTOFF FREQUENCY 50 40 IZ = 100 µA TA = 25°C TRANSIENT RESPONSE ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ 100 µA R C 30 20 Output 1.5 36 kΩ 1 VI VO 0.5 0 5 10 0 0.1 ÎÎÎ ÎÎÎ RC Low Pass Input and Output Voltages − V Output Noise Voltage − µV 60 100 k f − Frequency − Hz IZ − Reference Current − mA 70 10 k Input 1 10 f − Cutoff Frequency − kHz 100 0 Figure 7 0 100 t − Time − µs 500 600 Figure 8 † Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices. 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005 APPLICATION INFORMATION IO ≈ 58 µA + V+ 5.1 kΩ 100 kΩ ±1% Mercury Cell 1.345 V LM334 cw − R 2.00 kΩ ±1% cw V− 500 Ω 10 kΩ 412 Ω‡ ±1% 953 Ω† ±1% LM385-1.2 + Type K − Meter † Adjust for 11.15 mV at 25°C across 953 Ω ‡ Adjust for 12.17 mV at 25°C across 412 Ω Figure 9. Thermocouple Cold-Junction Compensator 2.3 V ≤ V+ ≤ 30 V V+ LM334 R V− 2.74 kΩ 1.2 V LM385-1.2 Figure 10. Operation Over a Wide Supply Range 9V 499 kΩ 1.2 V LM385-1.2 Figure 11. Reference From a 9-V Battery POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 PACKAGE OPTION ADDENDUM www.ti.com 17-Feb-2005 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty LM285D-1-2 ACTIVE SOIC D 8 75 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR LM285DR-1-2 ACTIVE SOIC D 8 2500 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR LM285LP-1-2 ACTIVE TO-92 LP 3 1000 None Call TI LM385BD-1-2 ACTIVE SOIC D 8 75 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR LM385BDR-1-2 ACTIVE SOIC D 8 2500 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR Lead/Ball Finish MSL Peak Temp (3) Level-NC-NC-NC LM385BLP-1-2 ACTIVE TO-92 LP 3 1000 None Call TI Level-NC-NC-NC LM385BLPR-1-2 ACTIVE TO-92 LP 3 2000 None Call TI Level-NC-NC-NC LM385BPW-1-2 ACTIVE TSSOP PW 8 150 Pb-Free (RoHS) CU NIPDAU Level-1-250C-UNLIM LM385BPWR-1-2 ACTIVE TSSOP PW 8 2000 Pb-Free (RoHS) CU NIPDAU Level-1-250C-UNLIM LM385D-1-2 ACTIVE SOIC D 8 75 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR LM385DR-1-2 ACTIVE SOIC D 8 2500 Pb-Free (RoHS) CU NIPDAU Level-2-250C-1 YEAR LM385LP-1-2 ACTIVE TO-92 LP 3 1000 None Call TI Level-NC-NC-NC LM385LPR-1-2 ACTIVE TO-92 LP 3 2000 None Call TI Level-NC-NC-NC LM385PSR-1-2 ACTIVE SO PS 8 2000 Pb-Free (RoHS) CU NIPDAU Level-2-260C-1 YEAR/ Level-1-235C-UNLIM LM385PW-1-2 ACTIVE TSSOP PW 8 150 Pb-Free (RoHS) CU NIPDAU Level-1-250C-UNLIM LM385PWR-1-2 ACTIVE TSSOP PW 8 2000 Pb-Free (RoHS) CU NIPDAU Level-1-250C-UNLIM (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. None: Not yet available Lead (Pb-Free). Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens, including bromine (Br) or antimony (Sb) above 0.1% of total product weight. (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 17-Feb-2005 incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2 MECHANICAL DATA MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001 LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE 0.205 (5,21) 0.175 (4,44) 0.165 (4,19) 0.125 (3,17) DIA 0.210 (5,34) 0.170 (4,32) Seating Plane 0.157 (4,00) MAX 0.050 (1,27) C 0.500 (12,70) MIN 0.104 (2,65) FORMED LEAD OPTION 0.022 (0,56) 0.016 (0,41) 0.016 (0,41) 0.014 (0,35) STRAIGHT LEAD OPTION D 0.135 (3,43) MIN 0.105 (2,67) 0.095 (2,41) 0.055 (1,40) 0.045 (1,14) 1 2 3 0.105 (2,67) 0.080 (2,03) 0.105 (2,67) 0.080 (2,03) 4040001-2 /C 10/01 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Lead dimensions are not controlled within this area D. FAlls within JEDEC TO -226 Variation AA (TO-226 replaces TO-92) E. Shipping Method: Straight lead option available in bulk pack only. Formed lead option available in tape & reel or ammo pack. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 MECHANICAL DATA MSOT002A – OCTOBER 1994 – REVISED NOVEMBER 2001 LP (O-PBCY-W3) PLASTIC CYLINDRICAL PACKAGE 0.539 (13,70) 0.460 (11,70) 1.260 (32,00) 0.905 (23,00) 0.650 (16,50) 0.610 (15,50) 0.020 (0,50) MIN 0.098 (2,50) 0.384 (9,75) 0.335 (8,50) 0.748 (19,00) 0.217 (5,50) 0.433 (11,00) 0.335 (8,50) 0.748 (19,00) 0.689 (17,50) 0.114 (2,90) 0.094 (2,40) 0.114 (2,90) 0.094 (2,40) 0.169 (4,30) 0.146 (3,70) DIA 0.266 (6,75) 0.234 (5,95) 0.512 (13,00) 0.488 (12,40) TAPE & REEL 4040001-3 /C 10/01 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Tape and Reel information for the Format Lead Option package. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MECHANICAL DATA MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. Falls within JEDEC MO-153 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. To minimize the risks associated with customer products and applications, customers should provide adequate design and operating safeguards. TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual property of the third party, or a license from TI under the patents or other intellectual property of TI. Reproduction of information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for such altered documentation. Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products Applications Amplifiers amplifier.ti.com Audio www.ti.com/audio Data Converters dataconverter.ti.com Automotive www.ti.com/automotive DSP dsp.ti.com Broadband www.ti.com/broadband Interface interface.ti.com Digital Control www.ti.com/digitalcontrol Logic logic.ti.com Military www.ti.com/military Power Mgmt power.ti.com Optical Networking www.ti.com/opticalnetwork Microcontrollers microcontroller.ti.com Security www.ti.com/security Telephony www.ti.com/telephony Video & Imaging www.ti.com/video Wireless www.ti.com/wireless Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2005, Texas Instruments Incorporated