Precision Reference

Obsolete Product - Datasheet For Reference Purposes Only. Contact Analog Devices For Replacement Product.

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 LM199/LM399 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.

Applications

* Precision voltage reference for multimeters

* Calibration equipment voltage standards

* Laboratory measurement equipment

* Industrial monitor/control instruments

* High accuracy data converters

* 6.95V Shunt Reference

* Guaranteed 0.5ppm/°C Temperature Coefficient

* Guaranteed 1Ω Maximum Dynamic Impedance

* Guaranteed 20µVRMS Maximum Noise