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LM3999, LM399A, LM399A-20

Table of contents:
Info of LM3999
Info of LM399A
Info of LM399A-20

LM3999, LM399A, LM399A-20 Selling Leads, Datasheet

MFG:NSC Package Cooled:TO92 D/C:96+

LM3999, LM399A, LM399A-20 Datasheet download

Five Points

Part Number: LM3999

MFG: NSC

Package Cooled: TO92

D/C: 96+

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LM399A General 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.

LM399A Maximum Ratings

Temperature Stabilizer .................................................40V
Reverse Breakdown Current ......................................20mA
Forward Current ..........................................................1mA
Reference to Substrate Voltage, VRS (Note 2) ..........0.1V
Operating Temperature Range
   LM199/LM199A (OBSOLETE) ................. 55°C to 125°C
   LM399/LM399A ........................................... 0°C to 70°C
Storage Temperature Range
   LM199/LM199A (OBSOLETE) ................ 65°C to 150°C
   LM399/LM399A .................................... 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C

LM399A Features

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

LM399A Typical Application

Precision Voltage Reference for Multimeters
Calibration Equipment Voltage Standards
Laboratory Measurement Equipment
Industrial Monitor/Control Instruments
High Accuracy Data Converters

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