Most H (Metal Can), J (Ceramic), and K (Metal Can) Packages Are Obsolete Download Complete Data Sheet for Details The LM329 temperature compensated 6.9V Zener references provide excellent stability over time and temperature, very low dynamic impedance and a wide operating current range. The device achieves low dynamic impedance by incorporating a high gain shunt regulator around the Zener. The excellent noise performance of the device is achieved by using a “buried Zener” design which eliminates surface noise phenomenon associated with ordinary Zeners. To serve a wide variety of applications, the LM129 is available in several temperature coefficient grades and two package styles. A 20mA positive current source application is shown below. Applications * Transducers * A/D and D/A Converters * Calibration Standards * Instrumentation Reference * Guaranteed 10ppm/°C Temperature Coefficient * Guaranteed 1Ω Maximum Dynamic Impedance https://elecena.pl/product/1364197/6-9v-precision-voltage-reference 2011-02-15 https://elecena.pl/product/1364197/6-9v-precision-voltage-reference 2016-04-13 https://elecena.pl/product/1364197/6-9v-precision-voltage-reference 2025-01-21