Zetex LM4040C25FTA Precision micropower shunt voltage reference Datasheet

LM4040
Precision micropower shunt voltage references
Description
The LM4040 is a family of bandgap circuits
designed to achieve precision micro-power
voltage references of 2.5V and 5.0V. The
devices are available in 0.5% C-grade and 1%
D-grade initial tolerances.
They are available in small outline SOT23
surface mount package which is ideal for
applications where space saving is important.
Excellent performance is maintained over the
60µA to 15mA operating current range with a
typical temperature coefficient of only 20ppm/°C.
The device has been designed to be highly
tolerant of capacitive loads so maintaining
excellent stability.
This device offers a pin for pin compatible
alternative to the LM4040 voltage reference.
Features
Applications
•
Small packages: SOT23
•
Battery powered equipment
•
No output capacitor required
•
Precision power supplies
•
Output voltage tolerance
•
Portable instrumentation
•
LM4040C
±0.5% at 25°C
•
Portable communications devices
•
LM4040D
±1% at 25°C
•
Notebook and palmtop computers
•
Data acquisition systems
•
Low output noise
(10Hz to 10kHz) .............. 45␮VRMS
•
Wide operating current range 60␮A to 15mA
•
Extended temperature range -40°C to +125°C
•
Low temperature coefficient 100 ppm/°C (max)
Pinout information
LM4040_F (SOT23)
Cathode 1
3 *
Anode 2
Top view
* Pin 3 must be left floating or connected to pin 2
Ordering information
25°C Voltage
Tol.
(V)
0.5%
1%
Order code
Pack
Part
mark
Status
Reel size
2.5
LM4040C25FTA
SOT23
R2C
Preview
7”, 180mm
8mm
3000
5.0
LM4040C50FTA
SOT23
R5C
Preview
7”, 180mm
8mm
3000
2.5
LM4040D25FTA
SOT23
R2D
Preview
7”, 180mm
8mm
3000
5.0
LM4040D50FTA
SOT23
R5D
Preview
7”, 180mm
8mm
3000
Issue 2 - February 2007
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width per reel
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LM4040
Absolute maximum ratings
Continuous reverse current (IR) ...................................... 20mA
Continuous forward current (IREF) .................................. 10mA
Operating junction temperature ..................................... -40°C to 150°C
Storage temperature ....................................................... -55°C to 150°C
Operation above the absolute maximum rating may cause device failure. Operation at the
absolute maximum ratings, for extended periods, may reduce device reliability.
Unless otherwise stated voltages specified are relative to the ANODE pin.
Package thermal data
Package
⍜JA
PDIS
Tamb =25°C, TJ = 150°C
SOT23
380°C/W
330mW
Recommended operating conditions
Min.
Max.
Units
Reverse current
0.06
15
mA
Operating ambient temperature range
-40
125
°C
Issue 2 - February 2007
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LM4040 - 2.5
Electrical characteristics
Over recommended operating conditions, Tamb = 25°C, unless otherwise stated.
Symbol Parameter
Conditions
Tamb
Reverse breakdown
voltage
VREF
IRMIN
Reverse breakdown
voltage tolerance
IR = 100␮A
IR = 100␮A
Minimum operating
current
25°C
Typ. LM4040C LM4040D
limits
limits
2.5
±12
±25
-40 to 85°C
±29
±49
-40 to 125°C
±38
±63
25°C
60
65
65
70
68
73
±100
±150
0.8
1.0
1.0
1.2
-40 to 125°C
1.0
1.2
25°C
6.0
8.0
8.0
10.0
8.0
10.0
0.9
1.1
45
-40 to 125°C
Average reverse
breakdown voltage
⌬VR/⌬T
temperature
coefficient
IR = 10mA
IR = 1mA,
-40 to 125°C
±15
Reverse breakdown
change with current
1mA < IR <
15 mA
␮A
ppm/°C
±15
25°C
⌬VR/⌬IR
mV
±20
IR = 100␮A
IRMIN < IR <
1mA
V
25°C
-40 to 85°C
Units
-40 to 85°C
-40 to 85°C
0.3
2.5
-40 to 125°C
mV
⍀
ZR
Dynamic output
impedance
IR = 1mA, f = 120Hz
IAC = 0.1IR
0.3
en
Noise voltage
IR = 100␮A
10Hz < f < 10kHz
45
␮VRMS
⌬VR
Long term stability
(non cumulative)
t = 1000Hrs
IR = 100␮A
25°C
120
ppm
VHYST
Thermal hysteresis
⌬T = -40°C to +125°C
0.08
%
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LM4040 - 5.0
Electrical characteristics
Over recommended operating conditions, Tamb = 25°C, unless otherwise stated.
Symbol Parameter
Conditions
Tamb
Reverse breakdown
voltage
VREF
IRMIN
Reverse breakdown
voltage tolerance
IR = 100␮A
25°C
Typ LM4040C LM4040D
limits
limits
5.00
±25
±50
-40 to 85°C
±58
±99
-40 to 125°C
±75
±125
25°C
74
79
80
85
83
88
±100
±150
1.0
1.3
1.4
1.8
-40 to 125°C
1.4
1.8
25°C
8.0
10.0
12.0
15.0
12.0
15.0
1.1
1.5
Minimum operating
current
-40 to 85°C
54
-40 to 125°C
IR = 10mA
Average reverse
IR = 1mA,
⌬VR/⌬T breakdown voltage
temperature coefficient
IR = 100␮A
-40 to 125°C ±20
µA
ppm/°C
±20
25°C
Reverse breakdown
change with current
mV
±30
IRMIN < IR <
1mA
⌬VR/⌬IR
V
25°C
IR = 100␮A
Units
-40 to 85°C
1mA < IR <
15mA
-40 to 85°C
0.5
3.5
-40 to 125°C
mV
⍀
ZR
Dynamic output
impedance
IR = 1mA, f = 120Hz
IAC = 0.1IR
0.5
en
Noise voltage
IR = 100␮A
10Hz < f < 10kHz
105
␮VRMS
120
ppm
0.08
%
⌬VR
VHYST
Long term stability (non t = 1000Hrs
cumulative)
IR = 100␮A
Thermal hysteresis
Issue 2 - February 2007
© Zetex Semiconductors plc 2007
25°C
⌬T = -40°C to +125°C
4
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LM4040
Package outline - SOT23
E
e
e1
b
3 leads
L1
D
E1
A
L
A1
Dim.
c
Millimeters
Inches
Dim.
Millimeters
Min.
Max.
Min.
Max.
A
-
1.12
-
0.044
e1
A1
0.01
0.10
0.0004
0.004
E
2.10
2.64
0.083
0.104
b
0.30
0.50
0.012
0.020
E1
1.20
1.40
0.047
0.055
C
0.085
0.120
0.003
0.008
L
0.25
0.62
0.018
0.024
D
2.80
3.04
0.110
0.120
L1
0.45
0.62
0.018
0.024
-
-
-
-
-
e
0.95 NOM
Min.
0.0375 NOM
Max.
Inches
1.90 NOM
Max.
Max.
0.075 NOM
Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches
Issue 2 - February 2007
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LM4040
Definitions
Product change
Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or
service. Customers are solely responsible for obtaining the latest relevant information before placing orders.
Applications disclaimer
The circuits in this design/application note are offered as design ideas. It is the responsibility of the user to ensure that the circuit is fit for
the user’s application and meets with the user’s requirements. No representation or warranty is given and no liability whatsoever is
assumed by Zetex with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights
arising from such use or otherwise. Zetex does not assume any legal responsibility or will not be held legally liable (whether in contract,
tort (including negligence), breach of statutory duty, restriction or otherwise) for any damages, loss of profit, business, contract,
opportunity or consequential loss in the use of these circuit applications, under any circumstances.
Life support
Zetex products are specifically not authorized for use as critical components in life support devices or systems without the express written
approval of the Chief Executive Officer of Zetex Semiconductors plc. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body
or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the
labelling can be reasonably expected to result in significant injury to the user.
B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to
cause the failure of the life support device or to affect its safety or effectiveness.
Reproduction
The product specifications contained in this publication are issued to provide outline information only which (unless agreed by the
company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a
representation relating to the products or services concerned.
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For the latest information on technology, delivery terms and conditions and prices, please contact your nearest Zetex sales office or visit: www.zetex.com
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To ensure quality of service and products we strongly advise the purchase of parts directly from Zetex Semiconductors or one of our
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Zetex Semiconductors does not warrant or accept any liability whatsoever in respect of any parts purchased through unauthorized sales channels.
ESD (Electrostatic discharge)
Semiconductor devices are susceptible to damage by ESD. Suitable precautions should be taken when handling and transporting devices.
The possible damage to devices depends on the circumstances of the handling and transporting, and the nature of the device. The extent
of damage can vary from immediate functional or parametric malfunction to degradation of function or performance in use over time.
Devices suspected of being affected should be replaced.
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regulatory requirements with respect to the use of hazardous substances. Numerous successful programs have been implemented to
reduce the use of hazardous substances and/or emissions.
All Zetex components are compliant with the RoHS directive, and through this it is supporting its customers in their compliance with
WEEE and ELV directives.
Product status key:
“Preview”
Future device intended for production at some point. Samples may be available
“Active”
Product status recommended for new designs
“Last time buy (LTB)”
Device will be discontinued and last time buy period and delivery is in effect
“Not recommended for new designs” Device is still in production to support existing designs and production
“Obsolete”
Production has been discontinued
Datasheet status key:
“Draft version”
This term denotes a very early datasheet version and contains highly provisional information, which
may change in any manner without notice.
“Provisional version”
This term denotes a pre-release datasheet. It provides a clear indication of anticipated performance.
However, changes to the test conditions and specifications may occur, at any time and without notice.
“Issue”
This term denotes an issued datasheet containing finalized specifications. However, changes to
specifications may occur, at any time and without notice.
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© 2007 Published by Zetex Semiconductors plc
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