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Linear Technology Electronic Components Datasheet

LM129 Datasheet

6.9V Precision Voltage Reference

No Preview Available !

Features
n Guaranteed 10ppm/°C Temperature Coefficient
n Guaranteed 1Ω Maximum Dynamic Impedance
n Guaranteed 20µV Maximum Wideband Noise
n Wide Operating Current Range: 0.6mA to 15mA
Applications
n Transducers
n A/D and D/A Converters
n Calibration Standards
n Instrumentation Reference
Typical Application
20mA Positive Current Source
20V
20k
0.1%
174Ω
0.1%
LM329
6.95V
27
LT1001
3+ 4
20k
0.1%
6
10k
4.3k
OUT
20mA
129329 TA01
LM129/LM329
6.9V Precision
Voltage Reference
Description
The LM®329 temperature compensated 6.9V Zener
references provide excellent stability over time and
temperature, very low dynamic impedance and a wide
operating current range. The device achieves low dynamic
impedance by incorporating a high gain shunt regulator
around the Zener. The excellent noise performance of the
device is achieved by using a “buried Zener” design which
eliminates surface noise phenomenon associated with
ordinary Zeners. To serve a wide variety of applications,
the LM129 is available in several temperature coefficient
grades and two package styles. A 20mA positive current
source application is shown below.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Reverse Voltage Change
8
TA = 25°C
7
6
5
4
3
2
1
0
0 2 4 6 8 10
REVERSE CURRENT (mA)
129329 TA01b
For more information www.linear.com/LM329
129329fd
1


Linear Technology Electronic Components Datasheet

LM129 Datasheet

6.9V Precision Voltage Reference

No Preview Available !

LM129/LM329
Absolute Maximum Ratings (Note 1)
Operating Temperature Range
LM129 (OBSOLETE)........................... –55°C to 125°C
LM329...................................................... 0°C to 70°C
Storage Temperature Range.................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
Reverse-Breakdown Current...................................30mA
Forward Current........................................................2mA
Pin Configuration
BOTTOM VIEW
BOTTOM VIEW
H PACKAGE
2-LEAD TO-46 METAL CAN
TJMAX = 150°C,
qJA = 440°C/W, qJC = 80°C/W
OBSOLETE PACKAGE
Consider the Z Package for Alternate Source
Z PACKAGE
3-LEAD PLASTIC TO-92
TJMAX = 150°C, θJA = 160°C/W
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LM129AH#PBF
LM129AH#TRPBF
LM129AH
2-Lead Plastic TO-46 Metal Can
LM129BH#PBF
LM129BH#TRPBF
LM129BH
2-Lead Plastic TO-46 Metal Can
LM129CH#PBF
LM129CH#TRPBF
LM129CH
2-Lead Plastic TO-46 Metal Can
LM329AH#PBF
LM329AH#TRPBF
LM329AH
2-Lead Plastic TO-46 Metal Can
LM329BH#PBF
LM329BH#TRPBF
LM329BH
2-Lead Plastic TO-46 Metal Can
LM329CH#PBF
LM329CH#TRPBF
LM329CH
2-Lead Plastic TO-46 Metal Can
LM329DH#PBF
LM329DH#TRPBF
LM329DH
2-Lead Plastic TO-46 Metal Can
LM329AZ#PBF
LM329AZ#TRPBF
LM329BZ
3-Lead Plastic TO-92
LM329BZ#PBF
LM329BZ#TRPBF
LM329BZ
3-Lead Plastic TO-92
LM329CZ#PBF
LM329CZ#TRPBF
LM329BZ
3-Lead Plastic TO-92
LM329DZ#PBF
LM329DZ#TRPBF
LM329BZ
3-Lead Plastic TO-92
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
–55°C to 125°C
–55°C to 125°C
–55°C to 125°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
2
For more information www.linear.com/LM329
129329fd


Part Number LM129
Description 6.9V Precision Voltage Reference
Maker Linear Technology
PDF Download

LM129 Datasheet PDF






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