LM329 - Precision Reference
Datasheet Packaging Samples & Pricing Application Notes Knowledge Base

Features
0.6 mA to 15 mA operating current
0.8Ω dynamic impedance at any current
Available with temperature coefficient of 0.01%/°C
7μV wideband noise
5% initial tolerance
0.002% long term stability
Low cost
Subsurface zener

General Description


The LM329 is a precision multi-current temperature-compensated 6.9V zener reference with dynamic impedance a factor of 10 to 100 less than discrete diodes. More...


  Typical Application
*click for larger image


ParametersValues
Initial Accuracy (+/-) Max 5 %
Reference Voltage 6.9 V
Tempco, max (ppm/C) 10 ppm
Operating Current 0.6 mA
Output Current 15 mA
Temperature Min 0 deg C
Temperature Max 70 deg C


Typical Performance


click for larger image

Reverse Voltage Characteristics
  Additional Resources
Application Notes


Connection Diagram


*click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM329 Precision Reference 195
Kbytes
17-Jan-08 Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM329DZTO-923NOPB
STD
1
1
NA
NA
RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.40box
of
1800
NSXYTT
LM329
DZ
8 weeks2000

Obsolete Versions

Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
LM329AH
NONE
NONE
02 Sep 2003
LM329BH
NONE
NONE
02 Sep 2003
LM329BZ
NONE
NONE
02 Sep 2003
LM329CH
NONE
NONE
02 Sep 2003
LM329CZ
NONE
NONE
02 Sep 2003
LM329D MDC
NONE
NONE
02 Sep 2003
LM329D MWC
NONE
NONE
02 Sep 2003
LM329DH
NONE
NONE
02 Sep 2003

General Description


The LM329 is a precision multi-current temperature-compensated 6.9V zener reference with dynamic impedance a factor of 10 to 100 less than discrete diodes. Constructed in a single silicon chip, the LM329 uses active circuitry to buffer the internal zener allowing the device to operate over a 0.5 mA to 15 mA range with virtually no change in performance. The LM329 is available with a temperature coefficients of 0.01%/°C. This reference also has excellent long term stability and low noise.

A new subsurface breakdown zener used in the LM329 gives lower noise and better long-term stability than conventional IC zeners. Further the zener and temperature compensating transistor are made by a planar process so they are immune to problems that plague ordinary zeners. For example, there is virtually no voltage shift in zener voltage due to temperature cycling and the device is insensitive to stress on the leads.

The LM329 can be used in place of conventional zeners with improved performance. The low dynamic impedance simplifies biasing and the wide operating current allows the replacement of many zener types.

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

Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-298: Application Note 298 Isolation Techniques for Signal Conditioning 379
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2-Oct-02 Download
AN-262: Application Note 262 Applying Dual and Quad FET Op Amps 416
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2-Oct-02 Download
AN-256: Application Note 256 Circuitry for Inexpensive Relative Humidity Measurement 119
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2-Oct-02 Download
AN-299: Application Note 299 Audio Applications of Linear Integrated Circuits 232
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24-Feb-99 Download
AN-284: Application Note 284 Single-Supply Applications of CMOS MICRODACs 121
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3-Oct-02 Download
AN-301: Application Note 301 Signal Conditioning for Sophisticated Transducers 579
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2-Oct-02 Download
AN-286: Application Note 286 Applications of the LM392 Comparator Op Amp IC 135
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2-Oct-02 Download

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[Information as of 8-Nov-2009]