LM129/LM329 – 6.9V Precision Voltage Reference

1 LM129/LM3291129329fdFor more information Precision Voltage ReferenceThe LM 329 temperature compensated Zener references provide excellent stability over time and temperature, very low dynamic impedance and a wide operating current range. The device achieves low dynamic impedance by incorporating a high gain shunt regulator around the Zener. The excellent noise performance of the device is achieved by using a buried Zener design which eliminates surface noise phenomenon associated with ordinary Zeners. To serve a wide variety of applications, the LM129 is available in several temperature coefficient grades and two package styles. A 20mA positive current source application is shown Positive Current SourceFeaTuresapplicaTionsn Guaranteed 10ppm/ C Temperature Coefficientn Guaranteed 1 Maximum Dynamic Impedancen Guaranteed 20 V Maximum Wideband Noisen Wide Operating Current Range: to 15mAn Transducersn A/D and D/A Convertersn Calibration Standardsn Instrumentation ReferenceReverse Voltage Change + TA0123764 REVERSE CURRENT (mA)0 REVERSE Voltage CHANGE (mV)610 129329 TA01b248876543210TA = 25 CL, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation.

2 All other trademarks are the property of their respective owners. LM129/LM3292129329fdFor more information MaxiMuM raTingsOperating Temperature Range LM129 (OBSOLETE) .. 55 C to 125 C lm329 ..0 C to 70 CStorage Temperature Range .. 65 C to 150 C(Note 1)orDer inForMaTionLEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGELM129AH#PBFLM129AH#TRPBFLM129AH2-Le ad Plastic TO-46 Metal Can 55 C to 125 CLM129BH#PBFLM129BH#TRPBFLM129BH2-Lead Plastic TO-46 Metal Can 55 C to 125 CLM129CH#PBFLM129CH#TRPBFLM129CH2-Lead Plastic TO-46 Metal Can 55 C to 125 CLM329AH#PBFLM329AH#TRPBFLM329AH2-Lead Plastic TO-46 Metal Can0 C to 70 CLM329BH#PBFLM329BH#TRPBFLM329BH2-Lead Plastic TO-46 Metal Can0 C to 70 CLM329CH#PBFLM329CH#TRPBFLM329CH2-Lead Plastic TO-46 Metal Can0 C to 70 CLM329DH#PBFLM329DH#TRPBFLM329DH2-Lead Plastic TO-46 Metal Can0 C to 70 CLM329AZ#PBFLM329AZ#TRPBFLM329BZ3-Lead Plastic TO-920 C to 70 CLM329BZ#PBFLM329BZ#TRPBFLM329BZ3-Lead Plastic TO-920 C to 70 CLM329CZ#PBFLM329CZ#TRPBFLM329BZ3-Lead Plastic TO-920 C to 70 CLM329DZ#PBFLM329DZ#TRPBFLM329BZ3-Lead Plastic TO-920 C to 70 CConsult LTC Marketing for parts specified with wider operating temperature ranges.

3 Consult LTC Marketing for information on non-standard lead based finish more information on lead free part marking, go to: For more information on tape and reel specifications, go to: VIEWH PACKAGE2-LEAD TO-46 METAL CAN TJMAX = 150 C, qJA = 440 C/W, qJC = 80 C/WOBSOLETE PACKAGEC onsider the Z Package for Alternate SourceBOTTOM VIEWZ PACKAGE3-LEAD PLASTIC TO-92 TJMAX = 150 C, qJA = 160 C/Wpin conFiguraTionLead Temperature (Soldering, 10 sec) ..300 CReverse-Breakdown Current ..30mAForward Current ..2mALM129/LM3293129329fdFor more information characTerisTicsNote 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25 C.

4 (Note 2)SYMBOLPARAMETERCONDITIONSLM129A/ LM129B/LM129 CLM329A/LM329B/ LM329C/ lm329 DUNITSMINTYPMAXMINTYPMAXVZR everse-Breakdown VoltageTA = 25 C, IR VZ IRReverse-Breakdown Voltage Change with CurrentTA = 25 C, IR 15mA 1mA IR 15mA l9 12149 1220mV mV VZ TempTemperature CoefficientIR = 1mA, LM129A/LM329A LM129B/LM329B LM129C/LM329C LM329D l l l l 6 15 30 10 20 50 6 15 30 50 10 20 50 100 ppm/ C ppm/ C ppm/ C ppm/ CChange in Temperature Coefficient 1mA IR 15mA l 1 1 ppm/ CrZDynamic ImpedanceTA = 25 C, IR = 1mA 1mA IR 15mA 12 enRMS NoiseTA = 25 C, 10Hz f 10kHz7207100 V VZ TimeLong-Term StabilityTA = 45 C C, IR = 1mA 2: To determine the junction temperature as a function of the ambient temperature, see qJA for each more information perForMance characTerisTicsFORWARD CURRENT (mA) Voltage (V) G04TA = 25 CFREQUENCY (Hz)10 NOISE (nV/ Hz)100100k129329 G05501001k10k150 TIME (SECONDS)0 NOISE (10 V/DIV)200129329 TO 1 HzForward CharacteristicsNoise VoltageLow Frequency Noise VoltageREVERSE Voltage (V) CURRENT (mA) G01.

5 = 55 CTJ = 125 CTJ = 25 CFREQUENCY (Hz)101001k10k100kDYNAMIC IMPEDANCE ( ) G02TA = 25 CTIME ( s) Voltage (V)864201400100200300129329 CharacteristicsDynamic ImpedanceResponse TimeLM129/LM3295129329fdFor more information DiagraM50 + 129329 SDLM129/LM3296129329fdFor more information ( ) ( ) ( ) ( ) ( ) ( ) ( )MAXUNCONTROLLEDLEAD ( )5 ( ) ( )10 ( )Z3 (TO-92) +016/ ( + )2 PLCSTO-92 TAPE AND REEL REFER TO TAPE AND REEL SECTION OF LTC DATA BOOK FOR ADDITIONAL INFORMATIONH Package2-Lead and 3-Lead TO-46 Metal Can( Reference LTC DWG # 05-08-1340) **( ) ( ) ( ) ( ) ( ) ( ) ( )TYP45 H02/03(TO-46) ( ) ( ) ( ) ( )FOR 3-LEAD PACKAGE ONLYREFERENCEPLANE*LEAD DIAMETER IS UNCONTROLLED BETWEEN THE Reference PLANE AND " BELOW THE Reference PLANEFOR SOLDER DIP LEAD FINISH, LEAD DIAMETER ( )**PIN 1 OBSOLETE PACKAGEZ Package3-Lead TO-92 (Similar to TO-226)( Reference LTC DWG # 05-08-1410)LM129/LM3297129329fdFor more information furnished by Linear Technology Corporation is believed to be accurate and reliable.

6 However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-tion that the interconnection of its circuits as described herein will not infringe on existing patent hisToryREVDATEDESCRIPTIONPAGE NUMBERD12/14 Web Links Added Package/Order Information Updated Revision History AddedAll 2 7(Revision history begins at Rev D)LM129/LM3298129329fdFor more information Technology Corporation1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 LINEAR TECHNOLOGY CORPORATION 2008LT 1214 REV D PRINTED IN USA(408) 432-1900 FAX: (408) 434-0507 parTsTypical applicaTionPART NUMBERDESCRIPTIONCOMMENTSLT1460 Micropower, Precise Series Reference10ppm/ C, Output Voltages: , 3V, , 5V, Accurate, 10ppm/ C, Shunt ReferenceOutput Voltages: , , , TO 40V129329 TA02 + TA03 Common ReferenceBuffered Reference Using a Single Supply