DESCRIPTION
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.
FEATURES
â 6.95V Shunt Reference
â Guaranteed 0.5ppm/°C Temperature Coeffi cient
â Guaranteed 1Ω Maximum Dynamic Impedance
â Guaranteed 20μVRMS Maximum Noise
â Guaranteed Initial Tolerance of 2%
â Wide Operating Current Range
â Available in 4-Lead TO-46 Metal Can
APPLICATIONS
â Precision Voltage Reference for Multimeters
â Calibration Equipment Voltage Standards
â Laboratory Measurement Equipment
â Industrial Monitor/Control Instruments
â High Accuracy Data Converters
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