NSC LM4040EIM3-2.5, LM4040EEM3X-2.5, LM4040EEM3-2.5, LM4040DIZ-8.2, LM4040DIZ-4.1 Datasheet
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LM4040
Precision Micropower Shunt Voltage Reference
General Description
Ideal for space critical applications, the LM4040 precision
voltage reference is available in the sub-miniature (3 mm x
1.3 mm) SOT-23 surface-mountpackage.The LM4040’s advanced design eliminates the need for an external stabilizing
capacitor while ensuring stability with any capacitive load,
thus making the LM4040 easy to use. Further reducing design effort is the availability of several fixed reverse breakdown voltages: 2.500V, 4.096V, 5.000V, 8.192V, and
10.000V. The minimum operating current increases from
60 µA for the LM4040-2.5 to 100 µA for the LM4040-10.0. All
versions have a maximum operating current of 15 mA.
The LM4040 utilizes fuse and zener-zap reverse breakdown
voltage trim during wafer sort to ensure that the prime parts
have an accuracy of better than
±
0.1%(A grade) at 25˚C.
Bandgap reference temperature drift curvature correction
and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.
Also available is the LM4041 with two reverse breakdown
voltage versions: adjustable and 1.2V. Please see the
LM4041 data sheet.
Features
n Small packages: SOT-23, TO-92
n No output capacitor required
n Tolerates capacitive loads
n Fixed reverse breakdown voltages of 2.500V, 4.096V,
5.000V, 8.192V, and 10.000V
Key Specifications (LM4040-2.5)
n Output voltage tolerance
(A grade, 25˚C)
±
0.1%(max)
n Low output noise
(10 Hz to 10 kHz) 35 µV
rms
(typ)
n Wide operating current range 60 µA to 15 mA
n Industrial temperature range −40˚C to +85˚C
n Extended temperature range −40˚C to +125˚C
n Low temperature coefficient 100 ppm/˚C (max)
Applications
n Portable, Battery-Powered Equipment
n Data Acquisition Systems
n Instrumentation
n Process Control
n Energy Management
n Product Testing
n Automotive
n Precision Audio Components
Connection Diagrams
SOT-23
DS011323-1
*This pin must be left floating or connected to pin 2.
Top View
See NS Package Number M03B
(JEDEC Registration TO-236AB)
TO-92
DS011323-3
Bottom View
See NS Package Number Z03A
September 1998
LM4040 Precision Micropower Shunt Voltage Reference
© 1998 National Semiconductor Corporation DS011323 www.national.com
Ordering Information
Industrial Temperature Range (−40 ˚C to +85 ˚C)
Reverse Breakdown
Voltage Tolerance at 25˚C
and Average Reverse Breakdown
Voltage Temperature Coefficient
Package
M3 (SOT-23) Z (TO-92)
±
0.1%, 100 ppm/˚C max (A grade) LM4040AIM3-2.5, LM4040AIZ-2.5,
LM4040AIM3-4.1, LM4040AIZ-4.1,
LM4040AIM3-5.0, LM4040AIZ-5.0,
LM4040AIM3-8.2, LM4040AIZ-8.2,
LM4040AIM3-10.0 LM4040AIZ-10.0
See NS Package See NS Package
Number M03B Number Z03A
±
0.2%, 100 ppm/˚C max (B grade) LM4040BIM3-2.5, LM4040BIZ-2.5,
LM4040BIM3-4.1, LM4040BIZ-4.1,
LM4040BIM3-5.0, LM4040BIZ-5.0,
LM4040BIM3-8.2, LM4040BIZ-8.2,
LM4040BIM3-10.0 LM4040BIZ-10.0
See NS Package See NS Package
Number M03B Number Z03A
±
0.5%, 100 ppm/˚C max (C grade) LM4040CIM3-2.5, LM4040CIZ-2.5,
LM4040CIM3-4.1, LM4040CIZ-4.1,
LM4040CIM3-5.0, LM4040CIZ-5.0,
LM4040CIM3-8.2, LM4040CIZ-8.2,
LM4040CIM3-10.0 LM4040CIZ-10.0
See NS Package See NS Package
Number M03B Number Z03A
±
1.0%, 150 ppm/˚C max (D grade) LM4040DIM3-2.5, LM4040DIZ-2.5,
LM4040DIM3-4.1, LM4040DIZ-4.1,
LM4040DIM3-5.0, LM4040DIZ-5.0,
LM4040DIM3-8.2, LM4040DIZ-10.0,
LM4040DIM3-10.0
See NS Package See NS Package
Number M03B Number Z03A
±
2.0%, 150 ppm/˚C max (E grade) LM4040EIM3-2.5 LM4040EIZ-2.5
See NS Package See NS Package
Number M03B Number Z03A
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Ordering Information (Continued)
Extended Temperature Range (−40 ˚C to +125 ˚C)
Reverse Breakdown
Voltage Tolerance at 25 ˚C
and Average Reverse Breakdown
Voltage Temperature Coefficient
Package
M3 (SOT-23)
See NS Package
Number M03B
±
0.5%, 100 ppm/˚C max (C grade) LM4040CEM3-2.5, LM4040CEM3-5.0
±
1.0%, 150 ppm/˚C max (D grade) LM4040DEM3-2.5, LM4040DEM3-5.0
±
2.0%, 150 ppm/˚C max (E grade) LM4040EEM3-2.5
SOT-23 Package Marking Information
Only three fields of marking are possible on the SOT-23’s small surface. This table gives the meaning of the three fields.
Part Marking Field Definition
R2A First Field:
R4A R=Reference
R5A Second Field:
R8A 2=2.500V Voltage Option
R0A 4=4.096V Voltage Option
R2B 5=5.000V Voltage Option
R4B 8=8.192V Voltage Option
R5B 0=10.000V Voltage Option
R8B
R0B Third Field:
R2C A–E=Initial Reverse Breakdown Voltage or Reference Voltage Tolerance
R4C A
=
±
0.1%,B
=
±
0.2%,C=+0.5%,D
=
±
1.0%,E
=
±
2.0
%
R5C
R8C
R0C
R2D
R4D
R5D
R8D
R0D
R2E
www.national.com3
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Reverse Current 20 mA
Forward Current 10 mA
Power Dissipation (T
A
=
25˚C) (Note 2)
M3 Package 306 mW
Z Package 550 mW
Storage Temperature −65˚C to +150˚C
Lead Temperature
M3 Package
Vapor phase (60 seconds) +215˚C
Infrared (15 seconds) +220˚C
Z Package
Soldering (10 seconds) +260˚C
ESD Susceptibility
Human Body Model (Note 3) 2 kV
Machine Model (Note 3) 200V
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Operating Ratings(Notes 1, 2)
Temperature Range (T
min
≤ TA≤ T
max
)
Industrial Temperature Range −40˚C ≤ T
A
≤ +85˚C
Extended Temperature Range −40˚C ≤ T
A
≤ +125˚C
Reverse Current
LM4040-2.5 60 µA to 15 mA
LM4040-4.1 68 µA to 15 mA
LM4040-5.0 74 µA to 15 mA
LM4040-8.2 91 µA to 15 mA
LM4040-10.0 100 µA to 15 mA
LM4040-2.5
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for T
A
=
T
J
=
T
MIN
to T
MAX
; all other limits T
A
=
T
J
=
25˚C. The grades A and B designate initial Re-
verse Breakdown Voltage tolerances of
±
0.1%and±0.2%, respectively.
Typical LM4040AIM3 LM4040BIM3 Units
Symbol Parameter Conditions (Note 4) LM4040AIZ LM4040BIZ (Limit)
Limits Limits
(Note 5) (Note 5)
V
R
Reverse Breakdown
Voltage
I
R
=
100 µA 2.500 V
Reverse Breakdown
Voltage Tolerance (Note 6)
I
R
=
100 µA
±
2.5
±
5.0 mV (max)
±
19
±
21 mV (max)
I
RMIN
Minimum Operating Current 45 µA
60 60 µA (max)
65 65 µA (max)
∆V
R
/∆T Average Reverse
Breakdown Voltage
Temperature Coefficient
(Note 6)
I
R
=
10 mA
±
20 ppm/˚C
I
R
=
1mA
±
15
±
100
±
100 ppm/˚C (max)
I
R
=
100 µA
±
15 ppm/˚C
∆V
R
/∆IRReverse Breakdown
Voltage Change with
Operating Current Change
I
RMIN
≤ IR≤ 1 mA 0.3 mV
0.8 0.8 mV (max)
1.0 1.0 mV (max)
1mA≤I
R
≤15 mA 2.5 mV
6.0 6.0 mV (max)
8.0 8.0 mV (max)
Z
R
Reverse Dynamic
Impedance
I
R
=
1 mA, f=120 Hz,
I
AC
=
0.1 I
R
0.3 Ω
0.8 0.8 Ω (max)
e
N
Wideband Noise I
R
=
100 µA 35 µV
rms
10 Hz ≤ f ≤ 10 kHz
∆V
R
Reverse Breakdown
Voltage Long Term Stability
t=1000 hrs
T=25˚C
±
0.1˚C
I
R
=
100 µA
120 ppm
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LM4040-2.5
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for T
A
=
T
J
=
T
MIN
to T
MAX
; all other limits T
A
=
T
J
=
25˚C. The grades C, D and E designate initial
Reverse Breakdown Voltage tolerances of
±
0.5%,±1.0%and±2.0%, respectively.
Typical
(Note 4)
LM4040CIM3 LM4040DIM3 LM4040EIZ
Units
(Limit)
Symbol Parameter Conditions LM4040CIZ LM4040DIZ
Limits Limits Limits
(Note 5) (Note 5) (Note 5)
V
R
Reverse
Breakdown Voltage
I
R
=
100 µA 2.500 V
Reverse
Breakdown Voltage
Tolerance (Note 6)
I
R
=
100 µA
±
12
±
25
±
50 mV (max)
±
29
±
49
±
74 mV (max)
I
RMIN
Minimum Operating
Current
45 µA
60 65 65 µA (max)
65 70 70 µA (max)
∆V
R
/∆T Average Reverse
Breakdown Voltage
Temperature
Coefficient(Note 6)
I
R
=
10 mA
±
20 ppm/˚C
I
R
=
1mA
±
15
±
100
±
150
±
150 ppm/˚C
(max)
I
R
=
100 µA
±
15 ppm/˚C
∆V
R
/∆IRReverse
Breakdown Voltage
Change with
Operating Current
Change
I
RMIN
≤ IR≤ 1 mA 0.4 mV
0.8 1.0 1.0 mV (max)
1.0 1.2 1.2 mV (max)
1mA≤I
R
≤15 mA 2.5 mV
6.0 8.0 8.0 mV (max)
8.0 10.0 10.0 mV (max)
Z
R
Reverse Dynamic
Impedance
I
R
=
1 mA, f=120 Hz 0.3 Ω
I
AC
=
0.1 I
R
0.9 1.1 1.1 Ω(max)
e
N
Wideband Noise I
R
=
100 µA 35 µV
rms
10 Hz ≤ f ≤ 10 kHz
∆V
R
Reverse
Breakdown Voltage
Long Term Stability
t=1000 hrs
T=25˚C
±
0.1˚C 120 ppm
I
R
=
100 µA
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LM4040-2.5
Electrical Characteristics (Extended Temperature Range)
Boldface limits apply for T
A
=
T
J
=
T
MIN
to T
MAX
; all other limits T
A
=
T
J
=
25˚C. The grades C, D and E designate initial
Reverse Breakdown Voltage tolerances of
±
0.5
,±1.0%and±2.0%,respectively.
Symbol Parameter Conditions Typical LM4040CEM3 LM4040DEM3 LM4040EEM3 Units
Limits Limits Limits (Limit)
(Note 4) (Note 5) (Note 5) (Note 5)
V
R
Reverse
Breakdown Voltage
I
R
=
100 µA 2.500 V
Reverse
Breakdown Voltage
Tolerance(Note 6)
I
R
=
100 µA
±
12
±
25
±
50 mV (max)
±
38
±
63
±
88 mV (max)
I
RMIN
Minimum Operating
Current
45 µA
60 60 60 µA (max)
68 73 73 µA (max)
∆V
R
/∆T Average Reverse
Breakdown Voltage
Temperature
Coefficient (Note 6)
I
R
=
10 mA
±
20 ppm/˚C
I
R
=
1mA
±
15
±
100
±
150
±
150 ppm/˚C (max)
I
R
=
100 µA
±
15 ppm/˚C
∆V
R
/∆IRReverse
Breakdown Voltage
Change with
Operating Current
Change
I
RMIN
≤ IR≤ 1 mA 0.3 mV
0.8 1.0 1.0 mV (max)
1.0 1.2 1.2 mV (max)
1mA≤I
R
≤15 mA 2.5 mV
6.0 8.0 8.0 mV (max)
8.0 10.0 10.0 mV (max)
Z
R
Reverse Dynamic
Impedance
I
R
=
1 mA, f=120
Hz, I
AC
=
0.1 I
R
0.3 Ω
0.9 1.1 1.1 Ω (max)
e
N
Wideband Noise I
R
=
100 µA 35 µV
rms
10 Hz ≤ f ≤ 10 kHz
∆V
R
Reverse
Breakdown Voltage
Long Term Stability
t=1000 hrs
T=25˚C
±
0.1˚C
I
R
=
100 µA
120 ppm
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LM4040-4.1
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for T
A
=
T
J
=
T
MIN
to T
MAX
; all other limits T
A
=
T
J
=
25˚C. The grades A and B designate initial Re-
verse Breakdown Voltage tolerances of
±
0.1%and±0.2%, respectively.
Symbol Parameter Conditions
Typical
(Note 4)
Units
(Limit)
LM4040AIM3 LM4040BIM3
LM4040AIZ LM4040BIZ
Limits Limits
(Note 5) (Note 5)
V
R
Reverse Breakdown
Voltage
I
R
=
100 µA 4.096 V
Reverse Breakdown
Voltage Tolerance (Note 6)
I
R
=
100 µA
±
4.1
±
8.2 mV (max)
±
31
±
35 mV (max)
I
RMIN
Minimum Operating Current 50 µA
68 68 µA (max)
73 73 µA (max)
∆V
R
/∆T Average Reverse
Breakdown Voltage
Temperature
Coefficient(Note 6)
I
R
=
10 mA
±
30 ppm/˚C
I
R
=
1mA
±
20
±
100
±
100 ppm/˚C (max)
I
R
=
100 µA
±
20 ppm/˚C
∆V
R
/∆IRReverse Breakdown
Voltage Change with
Operating Current Change
I
RMIN
≤ IR≤ 1 mA 0.5 mV
0.9 0.9 mV (max)
1.2 1.2 mV (max)
1mA≤I
R
≤15 mA 3.0 mV
7.0 7.0 mV (max)
10.0 10.0 mV (max)
Z
R
Reverse Dynamic
Impedance
I
R
=
1 mA, f=120 Hz, 0.5 Ω
I
AC
=
0.1 I
R
1.0 1.0 Ω (max)
e
N
Wideband Noise I
R
=
100 µA 80 µV
rms
10 Hz ≤ f ≤ 10 kHz
∆V
R
Reverse Breakdown
Voltage Long Term Stability
t=1000 hrs
T=25˚C
±
0.1˚C
I
R
=
100 µA
120 ppm
www.national.com7
LM4040-4.1
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for T
A
=
T
J
=
T
MIN
to T
MAX
; all other limits T
A
=
T
J
=
25˚C. The grades C and D designate initial Re-
verse Breakdown Voltage tolerances of
±
0.5%and±1.0%, respectively.
Symbol Parameter Conditions
Typical
(Note 4)
Units
(Limit)
LM4040CIM3 LM4040DIM3
LM4040CIZ LM4040DIZ
Limits Limits
(Note 5) (Note 5)
V
R
Reverse Breakdown
Voltage
I
R
=
100 µA 4.096 V
Reverse Breakdown
Voltage Tolerance (Note 6)
I
R
=
100 µA
±
20
±
41 mV (max)
±
47
±
81 mV (max)
I
RMIN
Minimum Operating Current 50 µA
68 73 µA (max)
73 78 µA (max)
∆V
R
/∆T Average Reverse
Breakdown Voltage
Temperature Coefficient
(Note 6)
I
R
=
10 mA
±
30 ppm/˚C
I
R
=
1mA
±
20
±
100
±
150 ppm/˚C (max)
I
R
=
100 µA
±
20 ppm/˚C
∆V
R
/∆IRReverse Breakdown
Voltage Change with
Operating Current Change
I
RMIN
≤ IR≤ 1 mA 0.5 mV
0.9 1.2 mV (max)
1.2 1.5 mV (max)
1mA≤I
R
≤15 mA 3.0 mV
7.0 9.0 mV (max)
10.0 13.0 mV (max)
Z
R
Reverse Dynamic
Impedance
I
R
=
1 mA, f=120 Hz, 0.5 Ω
I
AC
=
0.1 I
R
1.0 1.3 Ω (max)
e
N
Wideband Noise I
R
=
100 µA 80 µV
rms
10 Hz ≤ f ≤ 10 kHz
∆V
R
Reverse Breakdown
Voltage Long Term Stability
t=1000 hrs
T=25˚C
±
0.1˚C
I
R
=
100 µA
120 ppm
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