LM299H National Semiconductor, LM299H Datasheet

no-image

LM299H

Manufacturer Part Number
LM299H
Description
Manufacturer
National Semiconductor
Datasheet
© 1999 National Semiconductor Corporation
LM199/LM299/LM399/LM3999
Precision Reference
General Description
The LM199 series are precision, temperature-stabilized
monolithic zeners offering temperature coefficients a factor
of ten better than high quality reference zeners. Constructed
on a single monolithic chip is a temperature stabilizer circuit
and an active reference zener. The active circuitry reduces
the dynamic impedance of the zener to about 0.5
lows the zener to operate over 0.5 mA to 10 mA current
range with essentially no change in voltage or temperature
coefficient. Further, a new subsurface zener structure gives
low noise and excellent long term stability compared to ordi-
nary monolithic zeners. The package is supplied with a ther-
mal shield to minimize heater power and improve tempera-
ture regulation.
The LM199 series references are exceptionally easy to use
and free of the problems that are often experienced with or-
dinary zeners. There is virtually no hysteresis in reference
voltage with temperature cycling. Also, the LM199 is free of
voltage shifts due to stress on the leads. Finally, since the
unit is temperature stabilized, warm up time is fast.
The LM199 can be used in almost any application in place of
ordinary zeners with improved performance. Some ideal ap-
plications are analog to digital converters, calibration stan-
dards, precision voltage or current sources or precision
power supplies. Further in many cases the LM199 can re-
place references in existing equipment with a minimum of
wiring changes.
Connection Diagrams
LM199/LM299/LM399 (See Table on fourth page)
Metal Can Package (TO-46)
NS Package Number H04D
Top View
DS005717-14
DS005717
and al-
The LM199 series devices are packaged in a standard her-
metic TO-46 package inside a thermal shield. The LM199 is
rated for operation from −55˚C to +125˚C while the LM299 is
rated for operation from −25˚C to +85˚C and the LM399 is
rated from 0˚C to +70˚C.
The LM3999 is packaged in a standard TO-92 package and
is rated from 0˚C to +70˚C
Features
n Guaranteed 0.0001%/˚C temperature coefficient
n Low dynamic impedance — 0.5
n Initial tolerance on breakdown voltage — 2%
n Sharp breakdown at 400 µA
n Wide operating current — 500 µA to 10 mA
n Wide supply range for temperature stabilizer
n Guaranteed low noise
n Low power for stabilization — 300 mW at 25˚C
n Long term stability — 20 ppm
n Proven reliability, low-stress packaging in TO-46
n Certified long term stability available
n MIL-STD-883 compliant
integrated-circuit hermetic package, for low hysteresis
after thermal cycling. 33 million hours MTBF at T
+25˚C (T
LM3999 (See Table on fourth page)
J
= +86˚C)
NS Package Number Z03A
Plastic Package TO-92
Bottom View
DS005717-10
www.national.com
May 1999
A
=

Related parts for LM299H

LM299H Summary of contents

Page 1

... DS005717-14 Top View LM199/LM299/LM399 (See Table on fourth page) NS Package Number H04D © 1999 National Semiconductor Corporation DS005717 The LM199 series devices are packaged in a standard her- metic TO-46 package inside a thermal shield. The LM199 is rated for operation from −55˚C to +125˚C while the LM299 is rated for operation from − ...

Page 2

Functional Block Diagrams LM199/LM299/LM399 DS005717-15 www.national.com LM3999 DS005717-11 2 ...

Page 3

... Reference to Substrate Voltage V Operating Temperature Range documents: LM199 LM299 LM399/LM3999 Storage Temperature Range 40V Soldering Information 36V TO-92 package (10 sec TO-46 package (10 sec −0.1 mA (Notes 3, 6) Conditions LM199H/LM299H Min Typ 6.8 6. 0.5 +85˚C 0.00003 0.0001 A LM199 +125˚C ...

Page 4

... LM199; −25˚ −25˚C to +85˚C LM299AH LM199AH, LM199AH/883 LM299H and saturated standard cells, so that the deviation of any one group will not cause false indications. Indeed, this compari- son process has recently been automated using a specially prepared computer program which is custom-designed to re- ...

Page 5

... Typical Characteristics National Semiconductor Certified Long Term Drift Hrs Drift 168 −20 336 −24 504 −36 672 −34 840 −40 1008 −36 Testing Conditions Heater Voltage: 30V Zener Current Ambient Temp.: 25˚C Typical Performance Characteristics Reverse Characteristics DS005717-19 Zener Noise Voltage ...

Page 6

Typical Performance Characteristics Initial Heater Current DS005717-25 Low Frequency Noise Voltage Typical Applications Single Supply Operation DS005717-28 www.national.com (Continued) Heater Current (To Limit This Surge, See Next Graph) DS005717-26 Response Time DS005717-3 Split Supply Operation 6 Heater Surge Limit Resistor ...

Page 7

Typical Applications (Continued) Negative Heater Supply with Positive Reference DS005717-30 Buffered Reference With Single Sypply Positive Current Source Standard Cell Replacement 7 DS005717-31 DS005717-32 DS005717-33 www.national.com ...

Page 8

Typical Applications (Continued) Square Wave Voltage Reference 14V Reference www.national.com Negative Current Source Portable Calibrator* DS005717-35 *Warm-up time 10 seconds; intermittent operation does not degrade long term stability. Precision Clamp* DS005717-37 *Clamp will sink 5 mA when input goes more ...

Page 9

Typical Applications (Continued 20V Power Reference Bipolar Output Reference DS005717-40 Voltage Reference DS005717-9 9 DS005717-39 www.national.com ...

Page 10

Schematic Diagrams www.national.com Temperature Stabilizer Reference 10 DS005717-1 DS005717-13 ...

Page 11

... Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM299H, LM399H, LM199AH, LM199AH/883 LM299AH or LM399AH NS Package H04D Plastic Package Order Number LM3999Z NS Package Z03A 11 www.national.com ...

Page 12

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

Related keywords