LM399 Datasheet PDF – Precision Shunt Reference

Part Number: LM399

Function: Precision Shunt Reference

Package: TO-46 Type

Manufacturer: Linear Technology, Analog Devices


LM399 datasheet



The LM199 / LM399 precision shunt reference features excellent temperature stability over a wide range of voltage, temperature and operating current conditions. A stabilizing heater is incorporated with the active Zener on a monolithic substrate which nearly eliminates changes in voltage with temperature. The subsurface Zener operates over a current range of 0.5mA to 10mA, and offers minimal noise and excellent long-term stability.

Ideal applications for the device include digital voltmeters, precision calibration equipment, current sources and a variety of other precision low cost references. A 10V buffered reference application is shown below.


1. 6.95V Shunt Reference
2. Guaranteed 0.5ppm/°C Temperature Coeffi cient
3. Guaranteed 1Ω Maximum Dynamic Impedance
4. Guaranteed 20μVRMS Maximum Noise
5. Guaranteed Initial Tolerance of 2%
6. Wide Operating Current Range
7. Available in 4-Lead TO-46 Metal Can

Other data sheets are available within the file:

LM199, LM199A, LM199AH, LM199AH-20, LM199H


LM399 Datasheet PDF Download

LM399 pdf