LM329 Precision Reference - Texas .LM329 Precision Reference Check ... These changes are tested on

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Transcript of LM329 Precision Reference - Texas .LM329 Precision Reference Check ... These changes are tested on

  • 9V TO 40V

    RS

    LM329

    6.9V

    LM329

    www.ti.com SNVS748F MAY 2000REVISED APRIL 2013

    LM329 Precision ReferenceCheck for Samples: LM329

    1FEATURES DESCRIPTIONThe LM329 is a precision multi-current temperature-

    2 0.6 mA to 15 mA Operating Currentcompensated 6.9V zener reference with dynamic

    0.8 Dynamic Impedance at Any Current impedance a factor of 10 to 100 less than discrete Available With Temperature Coefficient of diodes. Constructed in a single silicon chip, the

    0.01%/C LM329 uses active circuitry to buffer the internalzener allowing the device to operate over a 0.5 mA to 7V Wideband Noise15 mA range with virtually no change in performance.

    5% Initial Tolerance The LM329 is available with a temperature 0.002% Long Term Stability coefficients of 0.01%/C. This reference also has

    excellent long term stability and low noise. Low Cost Subsurface Zener A new subsurface breakdown zener used in the

    LM329 gives lower noise and better long-termstability than conventional IC zeners. Further thezener and temperature compensating transistor aremade by a planar process so they are immune toproblems that plague ordinary zeners. For example,there is virtually no voltage shift in zener voltage dueto temperature cycling and the device is insensitive tostress on the leads.

    The LM329 can be used in place of conventionalzeners with improved performance. The low dynamicimpedance simplifies biasing and the wide operatingcurrent allows the replacement of many zener types.

    The LM329 for operation over 0C to 70C isavailable in a TO-92 epoxy package.

    Connection DiagramTypical Application

    Figure 1. Bottom ViewPlastic Package (TO-92)

    See Package LPFigure 2. Simple Reference

    1

    Please be aware that an important notice concerning availability, standard warranty, and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

    2All trademarks are the property of their respective owners.

    PRODUCTION DATA information is current as of publication date. Copyright 20002013, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.

    http://www.ti.com/product/lm329?qgpn=lm329http://www.ti.comhttp://www.ti.com/product/lm329#samples

  • LM329

    SNVS748F MAY 2000REVISED APRIL 2013 www.ti.com

    These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foamduring storage or handling to prevent electrostatic damage to the MOS gates.

    Absolute Maximum Ratings (1)

    Reverse Breakdown Current 30 mA

    Forward Current 2 mA

    Operating Temperature Range LM329 0C to +70C

    Storage Temperature Range 55C to +150CSoldering Information TO-92 package: 10 sec. 260C

    (1) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions forwhich the device is functional, but do not guarantee specific performance limits.

    Electrical Characteristics (1)

    Parameter Conditions Min Typ Max Units

    Reverse Breakdown Voltage TA = 25C, 0.6 mA IR 15 mA 6.6 6.9 7.25 VReverse Breakdown Change TA = 25C, with 0.6 mA IR 15 mA 9 20 mVCurrent (2)

    Reverse Dynamic Impedance (2) TA = 25C, IR = 1 mA 0.8 2 RMS Noise TA = 25C, 10 Hz F 10 kHz 7 100 VLong Term Stability (1000 hours) TA = 45C 0.1C, 20 ppm

    IR = 1 mA 0.3%

    Temperature Coefficient IR = 1 mA 50 100 ppm/C

    Change In Reverse Breakdown Temperature 1 mA IR 15 mA 1 ppm/CCoefficient

    Reverse Breakdown Change with Current 1 mA IR 15 mA 12 mVReverse Dynamic Impedance 1 mA IR 15 mA 1

    (1) These specifications apply for 0C TA +70C for the LM329 unless otherwise specified. The maximum junction temperature for aLM329 is 100C. For operating at elevated temperature. The TO-92 package, the derating is based on 180C/W junction to ambient with0.4 leads from a PC board and 160C/W junction to ambient with 0.125 lead length to a PC board.

    (2) These changes are tested on a pulsed basis with a low duty-cycle. For changes versus temperature, compute in terms of tempco.

    Typical Applications

    Figure 3. Low Cost 025V Regulator

    2 Submit Documentation Feedback Copyright 20002013, Texas Instruments Incorporated

    Product Folder Links: LM329

    http://www.ti.com/product/lm329?qgpn=lm329http://www.ti.comhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS748F&partnum=LM329http://www.ti.com/product/lm329?qgpn=lm329

  • INPUT

    OUTPUT

    LM3911H

    2

    1

    4

    3

    1N457

    1k

    15V

    LM329

    6.9V

    OUTPUT10 mV/oK

    -

    +

    LM308A

    20k

    6

    8

    4

    3

    2 7

    10k

    LM395

    LM329

    6.9V

    6k

    25V TO 40V

    100 pF

    38k

    1k

    0V TO 20V1A

    -5V

    2k5k

    1 PFMYLAR

    20k

    -

    +

    LM308A6

    84

    3

    2 7

    50k

    OUTPUT-6.9 VOUT 6.9

    LM329

    6.9V

    7.5k

    +15V

    30 pF

    1d d

    +15V

    50k

    50k10 TURNOUTPUTADJUST

    -15V

    LM329

    www.ti.com SNVS748F MAY 2000REVISED APRIL 2013

    Figure 4. Adjustable Bipolar Output Reference

    Figure 5. 0V to 20V Power Reference

    Figure 6. External Reference for Temperature Transducer

    Copyright 20002013, Texas Instruments Incorporated Submit Documentation Feedback 3

    Product Folder Links: LM329

    http://www.ti.com/product/lm329?qgpn=lm329http://www.ti.comhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS748F&partnum=LM329http://www.ti.com/product/lm329?qgpn=lm329

  • -

    +

    LM308A

    20k

    1%

    6

    8

    4

    3

    2 7

    9k

    10V

    LM329

    6.9V

    7.5k

    +15V

    100 pF

    -

    +

    LM308A

    350

    0.1%

    6

    8

    4

    3

    2 7

    2N2219LM329

    6.9V

    10V TO 40V

    100 pFOUTPUT10 mA

    10k

    20k

    0.1%

    20k

    0.1%

    4.3k

    LM329

    SNVS748F MAY 2000REVISED APRIL 2013 www.ti.com

    Figure 7. Positive Current Source

    Figure 8. Buffered Reference with Single Supply

    Schematic Diagram

    4 Submit Documentation Feedback Copyright 20002013, Texas Instruments Incorporated

    Product Folder Links: LM329

    http://www.ti.com/product/lm329?qgpn=lm329http://www.ti.comhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS748F&partnum=LM329http://www.ti.com/product/lm329?qgpn=lm329

  • LM329

    www.ti.com SNVS748F MAY 2000REVISED APRIL 2013

    Typical Performance Characteristics

    Reverse Characteristics Reverse Voltage Change

    Figure 9. Figure 10.

    Forward Characteristics Response Time

    Figure 11. Figure 12.

    Dynamic Impedance

    Figure 13.

    Copyright 20002013, Texas Instruments Incorporated Submit Documentation Feedback 5

    Product Folder Links: LM329

    http://www.ti.com/product/lm329?qgpn=lm329http://www.ti.comhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS748F&partnum=LM329http://www.ti.com/product/lm329?qgpn=lm329

  • LM329

    SNVS748F MAY 2000REVISED APRIL 2013 www.ti.com

    Typical Performance Characteristics (continued)

    Zener Noise Voltage Low Frequency Noise Voltage

    Figure 14. Figure 15.

    6 Submit Documentation Feedback Copyright 20002013, Texas Instruments Incorporated

    Product Folder Links: LM329

    http://www.ti.com/product/lm329?qgpn=lm329http://www.ti.comhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS748F&partnum=LM329http://www.ti.com/product/lm329?qgpn=lm329

  • LM329

    www.ti.com SNVS748F MAY 2000REVISED APRIL 2013

    REVISION HISTORY

    Changes from Revision E (April 2013) to Revision F Page

    Changed layout of National Data Sheet to TI format ............................................................................................................ 6

    Copyright 20002013, Texas Instruments Incorporated Submit Documentation Feedback 7

    Product Folder Links: LM329

    http://www.ti.com/product/lm329?qgpn=lm329http://www.ti.comhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SNVS748F&partnum=LM329http://www.ti.com/product/lm329?qgpn=lm329

  • PACKAGE OPTION ADDENDUM

    www.ti.com 25-Aug-2017

    Addendum-Page 1

    PACKAGING INFORMATION

    Orderable Device Status(1)

    Package Type PackageDrawing

    Pins PackageQty

    Eco Plan(2)

    Lead/Ball Finish(6)

    MSL Peak Temp(3)

    Op Temp (C) Device Marking(4/5)

    Samples

    LM329DZ/NOPB NRND TO-92 LP 3 1800 Green (RoHS& no Sb/Br)

    CU SN N / A for Pkg Type 0 to 70 LM329DZ

    (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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substancedo not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI mayr