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LM129 - Precision Reference

General Description

The LM129 and LM329 family are precision multi-current temperature-compensated 6.9V zener references with dynamic impedances a factor of 10 to 100 less than discrete diodes.

Key Features

  • n n n n n n n n 0.6 mA to 15 mA operating current 0.6Ω dynamic impedance at any current Available with temperature coefficients of 0.001%/˚C 7µV wideband noise 5% initial tolerance 0.002% long term stability Low cost Subsurface zener Connection Diagrams Metal Can Package (T0.
  • 46) Plastic Package (TO-92) DS005714-4 DS005714-6 Pin 2 is electrically connected to case Bottom View Order Number LM129AH, LM129AH/883, LM129BH, LM129BH/883, LM129CH, LM329AH, LM329BH, LM329CH or LM329DH See NS.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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LM129/LM329 Precision Reference March 2000 LM129/LM329 Precision Reference General Description The LM129 and LM329 family are precision multi-current temperature-compensated 6.9V zener references with dynamic impedances a factor of 10 to 100 less than discrete diodes. Constructed in a single silicon chip, the LM129 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 LM129 and LM329 are available with selected temperature coefficients of 0.001, 0.002, 0.005 and 0.01%/˚C. These references also have excellent long term stability and low noise. A new subsurface breakdown zener used in the LM129 gives lower noise and better long-term stability than conventional IC zeners.