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LM329 Datasheet Precision Reference

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM329 Precision Reference January 17, 2008 LM329 Precision Reference General.

Download the LM329 datasheet PDF. This datasheet also includes the LM329AH variant, as both parts are published together in a single manufacturer document.

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.

Key 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 Connection Diagram Typical.