LM4030AMF-2.5 NSC [National Semiconductor], LM4030AMF-2.5 Datasheet

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LM4030AMF-2.5

Manufacturer Part Number
LM4030AMF-2.5
Description
Ultra-High Precision Shunt Voltage Reference
Manufacturer
NSC [National Semiconductor]
Datasheet
1.LM4030AMF-2.5.pdf (14 pages)
© 2008 National Semiconductor Corporation
LM4030
SOT-23 Ultra-High Precision Shunt Voltage Reference
General Description
The LM4030 is an ultra-high precision shunt voltage refer-
ence, having exceptionally high initial accuracy (0.05%) and
temperature stability (10ppm/°C). The LM4030 is available
with fixed voltage options of 2.5V and 4.096V. Despite the tiny
SOT23 package, the LM4030 exhibits excellent thermal hys-
teresis (75ppm) and long-term stability (40ppm) as well as
immunity to board stress effects.
The LM4030 is designed to operate without an external ca-
pacitor, but any capacitor up to 10µF may be used. The
LM4030 can be powered off as little as 120µA (max) but is
capable of shunting up to 30mA continuously. As with any
shunt reference, the LM4030 can be powered off of virtually
any supply and is a simple way to generate a highly accurate
system reference.
The LM4030 is available in three grades (A, B, and C). The
best grade devices (A) have an initial accuracy of 0.05% with
guaranteed temperature coefficient of 10 ppm/°C or less,
while the lowest grade parts (C) have an initial accuracy of
0.15% and a temperature coefficient of 30 ppm/°C.
Typical Application Circuit
Connection Diagram
300463
NS Package Number MF05A
SOT23-5 Package
Top View
Features
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Applications
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High output voltage accuracy 0.05%
Low temperature coefficient 10 ppm/°C
Extended temperature operation -40-125°C
Excellent thermal hysteresis, 75ppm
Excellent long-term stability, 40ppm
High immunity to board stress effects
Capable of handling 50 mA transients
Voltage options 2.5V, 4.096V
SOT23-5 Package
Data Acquisition/Signal path
Test and Measurement
Automotive & Industrial
Communications
Instrumentation
Power Management
30046301
30046302
www.national.com
May 30, 2008

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LM4030AMF-2.5 Summary of contents

Page 1

LM4030 SOT-23 Ultra-High Precision Shunt Voltage Reference General Description The LM4030 is an ultra-high precision shunt voltage refer- ence, having exceptionally high initial accuracy (0.05%) and temperature stability (10ppm/°C). The LM4030 is available with fixed voltage options of 2.5V and ...

Page 2

... Pin Descriptions Pin # www.national.com LM4030 Supplied as 1000 LM4030 Supplied as 3000 units, units, Tape and Reel LM4030AMF-2.5 LM4030AMF-4.096 LM4030BMF-2.5 LM4030BMF-4.096 LM4030CMF-2.5 LM4030CMF-4.096 Name N/C GND, N/C N/C VREF GND 2 Part Marking Tape and Reel LM4030AMFX-2 ...

Page 3

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Voltage on any input Power Dissipation (T = 25°C) A (Note 2) Storage Temperature Range  Lead Temperature (soldering, ...

Page 4

Electrical Characteristics LM4030-4.096 (V = 4.096V) OUT over the junction temperature (T ) range of -40°C to +125°C. Minimum and Maximum limits are guaranteed through test, design statistical correlation. Typical values represent the most likely parametric norm at ...

Page 5

Typical Performance Characteristics for 2.5V Output Voltage vs Temperature Start Up - 120 µA Reverse Breakdown Voltage Change with Current 0 Peak-to-Peak Noise 30046332 30046304 Reverse Dynamic Impedance vs Frequency 30046314 5 30046303 Start ...

Page 6

Typical Performance Characteristics for 4.096V Output Voltage vs Temperature Start Up - 130 µA Reverse Breakdown Voltage Change with Current www.national.com 0 Peak-to-Peak Noise 30046349 30046307 Reverse Dynamic Impedance vs Frequency 30046312 6 30046306 Start Up - ...

Page 7

Typical Performance Characteristics Forward Characteristic Minimum Operating Current Thermal Hysteresis Distribution Load Transient Response 30046311 Noise Spectrum 30046316 Output Voltage vs Thermal Cycle (-40°C to 125°C) 30046330 7 30046313 30046317 30046351 www.national.com ...

Page 8

Long Term Stability (T www.national.com = 25°C) A 30046347 8 Long Term Stability (T =125°C) A 30046348 ...

Page 9

Application Information THEORY OF OPERATION The LM4030 is an ultra-high precision shunt voltage refer- ence, having exceptionally high initial accuracy (0.05%) and temperature stability (10ppm/°C). The LM4030 is available with fixed voltage options of 2.5V and 4.096V. Despite the tiny ...

Page 10

after temperature fluctuation. REF2 REF The LM4030 features a low thermal hysteresis of 75 ppm (typical) from -40°C to 125°C after 8 temperature cycles. TEMPERATURE COEFFICIENT Temperature drift is defined as the maximum deviation in out- put ...

Page 11

PRINTED CIRCUIT BOARD and LAYOUT CONSIDERATIONS The LM4030 has a very small change in reverse voltage with current (25ppm/mA typical) so large variations in load current (up to 50mA) should not appreciably shift VREF. Parasitic re- sistance between the LM4030 ...

Page 12

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted SOT23-5 Package NS Package Number MF05A 12 ...

Page 13

Notes 13 www.national.com ...

Page 14

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