LM129 Datasheet (PDF) Download
National Semiconductor
LM129

Description

The LM129 and LM329 family are precision multi-current temperature-pensated 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.