Datasheet Analog Devices LM399 — Datenblatt

LM199/LM399
LM199A/LM399A
Precision Reference
Features Description 6.95V Shunt Reference
Guaranteed 0.5ppm/°C Temperature Coefficient
nn Guaranteed 1Ω Maximum Dynamic Impedance
nn Guaranteed 20µV
RMS Maximum Noise
nn Guaranteed Initial Tolerance of 2%
nn Wide Operating Current Range
nn Available in 4-Lead TO-46 Metal Can 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. Applications 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. nn
nn Precision Voltage Reference for Multimeters
Calibration Equipment Voltage Standards
nn Laboratory Measurement Equipment
nn Industrial Monitor/Control Instruments …