LM199/LM399 LM199A/LM399A Precision Reference FeaTuresDescripTion n 6.95V Shunt Reference The LM199/LM399 precision shunt reference features n Guaranteed 0.5ppm/°C Temperature Coefficient excellent temperature stability over a wide range of volt- n Guaranteed 1Ω Maximum Dynamic Impedance age, temperature and operating current conditions. A n Guaranteed 20µV stabilizing heater is incorporated with the active Zener on RMS Maximum Noise n Guaranteed Initial Tolerance of 2% a monolithic substrate which nearly eliminates changes in n Wide Operating Current Range voltage with temperature. The subsurface Zener operates n Available in 4-Lead TO-46 Metal Can 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 volt- applicaTions meters, precision calibration equipment, current sources n Precision Voltage Reference for Multimeters and a variety of other precision low cost references. A 10V n Calibration Equipment Voltage Standards buffered reference application is shown below. n Laboratory Measurement Equipment L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Industrial Monitor/Control Instruments Technology Corporation. All other trademarks are the property of their respective owners. n High Accuracy Data Converters Typical applicaTion10V Buffered ReferenceReverse Voltage Change 15V 8 9k 7.5k 0.1% 5% 7 6 + 3 1 2 – 7 5 STABILIZED LM399H 6 LT®1001 10V (TJ ≈ 90°C) 6.95V 3 + 4 T 4 J = 25°C 20k 3 0.1% – 2 4 2 REVERSE VOLTAGE CHANGE (mV) LM199 TA01a 1 0 0 2 4 6 8 10 REVERSE CURRENT (mA) LM199 TA01b 199399fc For more information www.linear.com/LM399 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Functional Block Diagram Typical Applications Schematic Diagrams Package Description Revision History Related Parts
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