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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 SC70 and
SOT-23 surface-mount package. 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: 2.048V, 2.500V, 3.000V, 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
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.
±
0.1% (A grade) at 25˚C.
Features
n Small packages: SOT-23, TO-92 and SC70
n No output capacitor required
n Tolerates capacitive loads
n Fixed reverse breakdown voltages of 2.048V,
2.500V,3.000V, 4.096V, 5.000V, 8.192V, and 10.000V
Key Specifications (LM4040-2.5)
j
Output voltage tolerance
(A grade, 25˚C)
j
Low output noise
(10 Hz to 10 kHz) 35 µV
j
Wide operating current range 60 µA to 15 mA
j
Industrial temperature range −40˚C to +85˚C
j
Extended temperature range −40˚C to +125˚C
j
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
August 2002
±
0.1% (max)
(typ)
rms
LM4040 Precision Micropower Shunt Voltage Reference
Connection Diagrams
SOT-23 TO-92 SC70
*This pin must be left floating or connected to
pin 2.
See NS Package Number MF03A
(JEDEC Registration TO-236AB)
© 2002 National Semiconductor Corporation DS011323 www.national.com
01132301
Top View
Bottom View
01132303
See NS Package Number Z03A
*
This pin must be left floating or connected to pin
1.
Top View
See NS Package Number MAA05A
01132330
Ordering Information
Industrial Temperature Range (−40˚C to +85˚C)
LM4040
Reverse
Breakdown
Voltage
Tolerance at
25˚C and
Average
Reverse
Breakdown
Voltage
Temperature
Coefficient
±
0.1%, 100
ppm/˚C max (A
grade)
±
0.2%, 100
ppm/˚C max (B
grade)
±
0.5%, 100
ppm/˚C max (C
grade)
±
1.0%, 150
ppm/˚C max (D
grade)
±
2.0%, 150
ppm/˚C max (E
grade)
M3 (SOT-23) M7 (SC70)
Supplied as 1000
Units Tape and
Reel
LM4040AIM3-2.0
LM4040AIM3-2.5
LM4040AIM3-3.0
LM4040AIM3-4.1
LM4040AIM3-5.0
LM4040AIM3-8.2
LM4040AIM3-10.0
LM4040BIM3-2.0
LM4040BIM3-2.5
LM4040BIM3-3.0
LM4040BIM3-4.1
LM4040BIM3-5.0
LM4040BIM3-8.2
LM4040BIM3-10.0
LM4040CIM3-2.0
LM4040CIM3-2.5
LM4040CIM3-3.0
LM4040CIM3-4.1
LM4040CIM3-5.0
LM4040CIM3-8.2
LM4040CIM3-10.0
LM4040DIM3-2.0
LM4040DIM3-2.5
LM4040DIM3-3.0
LM4040DIM3-4.1
LM4040DIM3-5.0
LM4040DIM3-8.2
LM4040DIM3-10.0
LM4040EIM3-2.0
LM4040EIM3-2.5
LM4040EIM3-3.0
Supplied as 3000
Units tape and
Reel
LM4040AIM3X-2.0
LM4040AIM3X-2.5
LM4040AIM3X-3.0
LM4040AIM3X-4.1
LM4040AIM3X-5.0
LM4040AIM3X-8.2
LM4040AIM3X-10.0
LM4040BIM3X-2.0
LM4040BIM3X-2.5
LM4040BIM3X-3.0
LM4040BIM3X-4.1
LM4040BIM3X-5.0
LM4040BIM3X-8.2
LM4040BIM3X-10.0
LM4040CIM3X-2.0
LM4040CIM3X-2.5
LM4040CIM3X-3.0
LM4040CIM3X-4.1
LM4040CIM3X-5.0
LM4040CIM3X-8.2
LM4040CIM3X-10.0
LM4040DIM3X-2.0
LM4040DIM3X-2.5
LM4040DIM3X-3.0
LM4040DIM3X-4.1
LM4040DIM3X-5.0
LM4040DIM3X-8.2
LM4040DIM3X-10.0
LM4040EIM3X-2.0
LM4040EIM3X-2.5
LM4040EIM3X-3.0
Package
Supplied as 1000
Units Tape and
LM4040BIM7-2.0
LM4040BIM7-2.5
LM4040BIM7-3.0
LM4040BIM7-4.1
LM4040BIM7-5.0
LM4040CIM7-2.0
LM4040CIM7-2.5
LM4040CIM7-3.0
LM4040CIM7-4.1
LM4040CIM7-5.0
LM4040DIM7-2.0
LM4040DIM7-2.5
LM4040DIM7-3.0
LM4040DIM7-4.1
LM4040DIM7-5.0
LM4040EIM7-2.0
LM4040EIM7-2.5
LM4040EIM7-3.0
Reel
Supplied as 3000
Units Tape and
Reel
LM4040BIM7X-2.0
LM4040BIM7X-2.5
LM4040BIM7X-3.0
LM4040BIM7X-4.1
LM4040BIM7X-5.0
LM4040CIM7X-2.0
LM4040CIM7X-2.5
LM4040CIM7X-3.0
LM4040CIM7X-4.1
LM4040CIM7X-5.0
LM4040DIM7X-2.0
LM4040DIM7X-2.5
LM4040DIM7X-3.0
LM4040DIM7X-4.1
LM4040DIM7X-5.0
LM4040EIM7X-2.0
LM4040EIM7X-2.5
LM4040EIM7X-3.0
Z (TO-92)
LM4040AIZ-2.0
LM4040AIZ-2.5
LM4040AIZ-3.0
LM4040AIZ-4.1
LM4040AIZ-5.0
LM4040AIZ-8.2
LM4040AIZ-10.0
LM4040BIZ-2.0
LM4040BIZ-2.5
LM4040BIZ-3.0
LM4040BIZ-4.1
LM4040BIZ-5.0
LM4040BIZ-8.2
LM4040BIZ-10.0
LM4040CIZ-2.0
LM4040CIZ-2.5
LM4040CIZ-3.0
LM4040CIZ-4.1
LM4040CIZ-5.0
LM4040CIZ-8.2
LM4040CIZ-10.0
LM4040DIZ-2.0
LM4040DIZ-2.5
LM4040DIZ-3.0
LM4040DIZ-4.1
LM4040DIZ-5.0
LM4040DIZ-8.2
LM4040DIZ-10.0
LM4040EIZ-2.0
LM4040EIZ-2.5
LM4040EIZ-3.0
NS
Package
Number
MF03A,
Z03A
MF03A,
Z03A,
MAA05A
MF03A,
Z03A,
MAA05A
MF03A,
Z03A,
MAA05A
MF03A,
Z03A,
MAA05A
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Extended Temperature Range (−40 ˚C to +125˚C)
Reverse Breakdown
Voltage Tolerance at 25 ˚C
and Average Reverse Breakdown
Voltage Temperature Coefficient
±
0.5%, 100 ppm/˚C max (C grade) LM4040CEM3-2.0, LM4040CEM3-2.5,
±
1.0%, 150 ppm/˚C max (D grade) LM4040DEM3-2.0, LM4040DEM3-2.5,
±
2.0%, 150 ppm/˚C max (E grade) LM4040EEM3-2.0, LM4040EEM3-2.5,
LM4040
Package
M3 (SOT-23)
See NS Package
Number MF03A
LM4040CEM3-3.0, LM4040CEM3-5.0
LM4040DEM3-3.0, LM4040DEM3-5.0
LM4040EEM3-3.0
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SOT-23 AND SC70 Package Marking Information
Only three fields of marking are possible on the SOT-23’s and SC70’s small surface. This table gives the meaning of the three
LM4040
fields.
Part Marking Field Definition
RJA SOT-23 only First Field:
R2A SOT-23 only
RKA SOT-23 only
R4A SOT-23 only R = Reference
R5A SOT-23 only Second Field:
J = 2.048V Voltage Option
2 = 2.500V Voltage Option
R8A SOT-23 only K = 3.000V Voltage Option
R0A SOT-23 only 4 = 4.096V Voltage Option
RJB
R2B 5 = 5.000V Voltage Option
RKB
R4B 8= 8.192V Voltage Option
R5B 0 = 10.000V Voltage Option
R8B SOT-23 only
R0B SOT-23 only Third Field:
RJC
R2C A–E = Initial Reverse Breakdown Voltage or Reference Voltage Tolerance
RKC
R4C A =
R5C
R8C SOT-23 only
R0C SOT-23 only
RJD
R2D
RKD
R4D
R5D
R8D SOT-23 only
R0D SOT-23 only
RJE
R2E
RKE
±
0.1%, B =±0.2%, C = +0.5%, D =±1.0%, E =±2.0%
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LM4040
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
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.
Reverse Current 20 mA
Forward Current 10 mA
Power Dissipation (T
= 25˚C) (Note 2)
A
M3 Package 306 mW
Z Package 550 mW
M7 Package 241 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
Operating Ratings(Notes 1, 2)
Temperature Range (T
Industrial Temperature Range −40˚C ≤ T
Extended Temperature Range −40˚C ≤ T
Reverse Current
LM4040-2.0 60 µA to 15 mA
LM4040-2.5 60 µA to 15 mA
LM4040-3.0 62 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
LM4040-2.0
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions
V
R
Reverse Breakdown Voltage IR= 100 µA 2.048 V
Reverse Breakdown Voltage
Tolerance
(Note 6)
I
RMIN
∆V
Minimum Operating Current 45 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient
(Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note *NO
TARGET FOR FNXref
NS4914*)
Z
R
Reverse Dynamic
Impedance
e
N
Wideband Noise IR= 100 µA 35 µV
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
LM4040AIM3
Typical
(Note 4)
LM4040AIZ
(Limit)
(Note 5)
= 100 µA
I
R
±
2.0
±
15
60 60 µA (max)
65 65 µA (max)
=10mA
I
R
I
=1mA
R
= 100 µA
I
R
≤ IR≤ 1 mA 0.3 mV
I
RMIN
±
20 ppm/˚C
±
15
±
15 ppm/˚C
±
100
0.8 0.8 mV (max)
1.0 1.0 mV (max)
1mA≤ I
≤ 15 mA 2.5 mV
R
6.0 6.0 mV (max)
8.0 8.0 mV (max)
IR= 1 mA, f = 120 Hz,
= 0.1 I
I
AC
R
0.3 Ω
0.8 0.8 Ω (max)
10 Hz ≤ f ≤ 10 kHz
≤ TA≤ T
min
LM4040BIM3
LM4040BIZ
LM4040BIM7
(Limit)
(Note 5)
±
4.1 mV (max)
±
17 mV (max)
±
100 ppm/˚C (max)
≤ +85˚C
A
+125˚C
Units
(Limit)
rms
max
)
≤
A
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LM4040-2.0
Electrical Characteristics (Industrial Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
LM4040AIM3
Symbol Parameter Conditions
Typical
(Note 4)
LM4040AIZ
(Limit)
(Note 5)
∆V
V
R
HYST
Reverse Breakdown Voltage
Long Term Stability
Thermal Hysteresis
(Note 8)
t = 1000 hrs
±
T = 25˚C
= 100 µA
I
R
0.1˚C
∆T = −40˚C to +125˚C
120 ppm
0.08 %
LM4040-2.0
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown
IR= 100 µA 2.048 V
Voltage
Reverse Breakdown
= 100 µA
I
R
Voltage Tolerance
(Note 6)
I
RMIN
Minimum Operating
Current
∆V
/∆T Average Reverse
R
=10mA
I
R
Breakdown Voltage
=1mA
I
Temperature
Coefficient
(Note 6)
/∆IRReverse Breakdown
∆V
R
R
= 100 µA
I
R
I
RMIN
Voltage Change with
Operating Current
Change
(Note *NO TARGET
1mA≤ I
FOR FNXref
NS4914*)
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz 0.3 Ω
I
= 0.1 I
AC
Wideband Noise IR= 100 µA 35 µV
10 Hz ≤ f ≤ 10 kHz
∆V
V
R
HYST
Reverse Breakdown
Voltage Long Term
Stability
Thermal Hysteresis
t = 1000 hrs
T = 25˚C
I
= 100 µA
R
∆T = −40˚C to +125˚C
(Note 8)
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
LM4040CIM3
(Note 4)
LM4040CIZ
LM4040CIM7
(Limit)
(Note 5)
±
10
±
23
45 µA
60 65 65 µA (max)
65 70 70 µA (max)
±
20 ppm/˚C
±
15
±
15 ppm/˚C
±
100
≤ IR≤ 1 mA 0.3 mV
0.8 1.0 1.0 mV (max)
1.0 1.2 1.2 mV (max)
≤ 15 mA 2.5 mV
R
6.0 8.0 8.0 mV (max)
8.0 10.0 10.0 mV (max)
R
±
0.1˚C 120 ppm
0.9 1.1 1.1 Ω(max)
0.08 %
LM4040BIM3
LM4040BIM7
LM4040DIM3
LM4040DIZ
LM4040DIM7
(Limit)
(Note 5)
±
20
±
40
±
150
(Continued)
LM4040BIZ
(Limit)
(Note 5)
LM4040EIM7
LM4040EIZ
(Limit)
(Note 5)
±
±
±
150 ppm/˚C (max)
Units
(Limit)
Units
(Limit)
41 mV (max)
60 mV (max)
rms
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LM4040-2.0
Electrical Characteristics (Extended Temperature Range)
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown
IR= 100 µA 2.048 V
Voltage
Reverse Breakdown
= 100 µA
I
R
Voltage Tolerance
(Note 6)
I
RMIN
Minimum Operating
Current
∆V
/∆T Average Reverse
R
=10mA
I
R
Breakdown Voltage
=1mA
I
Temperature
Coefficient
(Note 6)
/∆IRReverse Breakdown
∆V
R
R
= 100 µA
I
R
I
RMIN
Voltage Change with
Operating Current
Change
(Note 7)
1mA≤ I
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz,
= 0.1 I
I
AC
Wideband Noise IR= 100 µA 35 µV
10 Hz ≤ f ≤ 10 kHz
∆V
V
HYST
Reverse Breakdown
R
Voltage Long Term
Stability
Thermal Hysteresis
t = 1000 hrs
T = 25˚C
= 100 µA
I
R
∆T = −40˚C to +125˚C
(Note 8)
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
(Note 4)
LM4040CEM3
(Limit)
(Note 5)
±
10
±
30
LM4040DEM3
(Limit)
(Note 5)
±
±
45 µA
60 65 65 µA (max)
68 73 73 µA (max)
±
20 ppm/˚C
±
15
±
15 ppm/˚C
±
100
±
≤ IR≤ 1 mA 0.3 mV
0.8 1.0 1.0 mV (max)
1.0 1.2 1.2 mV (max)
≤ 15 mA 2.5 mV
R
6.0 8.0 8.0 mV (max)
8.0 10.0 10.0 mV (max)
0.3 Ω
R
±
0.1˚C
120 ppm
0.9 1.1 1.1 Ω (max)
0.08 %
20
50
150
LM4040EEM3
(Limit)
(Note 5)
±
41 mV (max)
±
70 mV (max)
±
150 ppm/˚C (max)
LM4040
Units
(Limit)
rms
LM4040-2.5
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions
V
R
Reverse Breakdown Voltage IR= 100 µA 2.500 V
Reverse Breakdown Voltage
Tolerance (Note 6)
I
RMIN
Minimum Operating Current 45 µA
to T
MIN
±
0.1% and±0.2%, respectively.
I
= 100 µA
R
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
Typical
(Note 4)
LM4040AIM3
LM4040AIZ
(Limit)
(Note 5)
±
2.5
±
19
60 60 µA (max)
65 65 µA (max)
LM4040BIM3
LM4040BIZ
LM4040BIM7
Limits
(Note 5)
±
5.0 mV (max)
±
21 mV (max)
Units
(Limit)
www.national.com7
LM4040-2.5
Electrical Characteristics (Industrial Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions
/∆T Average Reverse Breakdown
∆V
R
Voltage Temperature
Coefficient (Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note 7)
Z
R
Reverse Dynamic
Impedance
e
∆V
N
Wideband Noise IR= 100 µA 35 µV
Reverse Breakdown Voltage
R
Long Term Stability
V
HYST
Thermal Hysteresis
(Note 8)
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
LM4040AIM3
Typical
(Note 4)
LM4040AIZ
(Limit)
(Note 5)
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
≤ IR≤ 1 mA 0.3 mV
I
RMIN
1mA≤ I
≤ 15 mA 2.5 mV
R
IR= 1 mA, f = 120 Hz,
= 0.1 I
I
AC
R
±
20 ppm/˚C
±
15
±
15 ppm/˚C
0.3 Ω
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
±
T = 25˚C
= 100 µA
I
R
0.1˚C
∆T = −40˚C to +125˚C
120 ppm
0.08 %
(Continued)
LM4040BIM3
LM4040BIZ
LM4040BIM7
Limits
Units
(Limit)
(Note 5)
±
100
±
100 ppm/˚C (max)
0.8 0.8 mV (max)
1.0 1.0 mV (max)
6.0 6.0 mV (max)
8.0 8.0 mV (max)
0.8 0.8 Ω (max)
rms
LM4040-2.5
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown
IR= 100 µA 2.500 V
Voltage
Reverse Breakdown
= 100 µA
I
R
Voltage Tolerance
(Note 6)
I
RMIN
Minimum Operating
Current
∆V
/∆T Average Reverse
R
Breakdown Voltage
Temperature
Coefficient(Note 6)
=10mA
I
R
I
=1mA
R
= 100 µA
I
R
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
LM4040CIM3
(Note 4)
LM4040DIZ
LM4040CIM7
(Note 5)
45 µA
±
20 ppm/˚C
±
15
±
15 ppm/˚C
LM4040DIM3
LM4040DIZ
LM4040DIM7
Limits
Limits
(Note 5)
±
12
±
29
±
±
60 65 65 µA (max)
65 70 70 µA (max)
±
100
±
25
49
150
LM4040EIM7
LM4040EIZ
Limits
(Note 5)
±
50 mV (max)
±
74 mV (max)
±
150 ppm/˚C (max)
Units
(Limit)
www.national.com 8
LM4040-2.5
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
/∆IRReverse Breakdown
∆V
R
I
RMIN
Voltage Change with
Operating Current
Change
1mA≤ I
(Note 7)
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz 0.3 Ω
I
= 0.1 I
AC
Wideband Noise IR= 100 µA 35 µV
10 Hz ≤ f ≤ 10 kHz
∆V
V
R
HYST
Reverse Breakdown
Voltage Long Term
Stability
Thermal Hysteresis
t = 1000 hrs
T = 25˚C
I
= 100 µA
R
∆T = −40˚C to +125˚C
(Note 8)
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
(Note 4)
LM4040CIM3
LM4040DIZ
LM4040CIM7
Limits
(Note 5)
LM4040DIM3
LM4040DIZ
LM4040DIM7
Limits
(Note 5)
≤ IR≤ 1 mA 0.3 mV
0.8 1.0 1.0 mV (max)
1.0 1.2 1.2 mV (max)
≤ 15 mA 2.5 mV
R
6.0 8.0 8.0 mV (max)
8.0 10.0 10.0 mV (max)
R
±
0.1˚C 120 ppm
0.9 1.1 1.1 Ω(max)
0.08 %
(Continued)
LM4040EIM7
LM4040EIZ
Limits
(Note 5)
LM4040
Units
(Limit)
rms
LM4040-2.5
Electrical Characteristics (Extended Temperature Range)
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown
IR= 100 µA 2.500 V
Voltage
Reverse Breakdown
= 100 µA
I
R
Voltage
Tolerance(Note 6)
I
RMIN
Minimum Operating
Current
∆V
/∆T Average Reverse
R
Breakdown Voltage
Temperature
Coefficient (Note 6)
∆V
/∆IRReverse Breakdown
R
=10mA
I
R
I
=1mA
R
= 100 µA
I
R
I
RMIN
Voltage Change with
Operating Current
Change
(Note 7)
1mA≤ I
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
(Note 4)
LM4040CEM3
Limits
(Note 5)
±
12
±
38
LM4040DEM3
Limits
(Note 5)
±
±
45 µA
60 65 65 µA (max)
68 73 73 µA (max)
±
20 ppm/˚C
±
15
±
15 ppm/˚C
±
100
±
≤ IR≤ 1 mA 0.3 mV
0.8 1.0 1.0 mV (max)
1.0 1.2 1.2 mV (max)
≤ 15 mA 2.5 mV
R
6.0 8.0 8.0 mV (max)
8.0 10.0 10.0 mV (max)
25
63
150
LM4040EEM3
Limits
(Note 5)
±
50 mV (max)
±
88 mV (max)
±
150 ppm/˚C (max)
Units
(Limit)
www.national.com9
LM4040-2.5
Electrical Characteristics (Extended Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
LM4040CEM3
(Note 4)
Limits
(Note 5)
Z
R
Reverse Dynamic
Impedance
e
N
Wideband Noise IR= 100 µA 35 µV
IR= 1 mA, f = 120 Hz,
= 0.1 I
I
AC
R
0.3 Ω
0.9 1.1 1.1 Ω (max)
10 Hz ≤ f ≤ 10 kHz
∆V
V
HYST
Reverse Breakdown
R
Voltage Long Term
Stability
Thermal Hysteresis
(Note 8)
t = 1000 hrs
±
T = 25˚C
= 100 µA
I
R
0.1˚C
∆T = −40˚C to +125˚C
120 ppm
0.08 %
LM4040-3.0
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions
V
R
Reverse Breakdown Voltage IR= 100 µA 3.000 V
Reverse Breakdown Voltage
Tolerance (Note 6)
I
RMIN
∆V
Minimum Operating Current 47 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient (Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note 7)
Z
R
Reverse Dynamic
Impedance
e
∆V
N
Wideband Noise IR= 100 µA 35 µV
Reverse Breakdown Voltage
R
Long Term Stability
V
HYST
Thermal Hysteresis
(Note 8)
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
LM4040AIM3
Typical
(Note 4)
LM4040AIZ
(Limit)
(Note 5)
I
= 100 µA
R
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
≤ IR≤ 1 mA 0.6 mV
I
RMIN
1mA≤ I
≤ 15 mA 2.7 mV
R
IR= 1 mA, f = 120 Hz,
= 0.1 I
I
AC
R
±
20 ppm/˚C
±
15
±
15 ppm/˚C
0.4 Ω
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
±
T = 25˚C
= 100 µA
I
R
0.1˚C
∆T = −40˚C to +125˚C
120 ppm
0.08 %
(Continued)
LM4040DEM3
Limits
(Note 5)
LM4040EEM3
Limits
(Note 5)
Units
(Limit)
LM4040BIM3
LM4040BIZ
LM4040BIM7
Limits
Units
(Limit)
(Note 5)
±
3.0
±
22
±
6.0 mV (max)
±
26 mV (max)
62 62 µA (max)
67 67 µA (max)
±
100
±
100 ppm/˚C (max)
0.8 0.8 mV (max)
1.1 1.1 mV (max)
6.0 6.0 mV (max)
9.0 9.0 mV (max)
0.9 0.9 Ω (max)
rms
rms
www.national.com 10
LM4040-3.0
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown
IR= 100 µA 3.000 V
Voltage
Reverse Breakdown
= 100 µA
I
R
Voltage Tolerance
(Note 6)
I
RMIN
Minimum Operating
Current
∆V
/∆T Average Reverse
R
Breakdown Voltage
Temperature
Coefficient(Note 6)
/∆IRReverse Breakdown
∆V
R
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
I
RMIN
Voltage Change with
Operating Current
Change
1mA≤ I
(Note 7)
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz 0.4 Ω
I
= 0.1 I
AC
Wideband Noise IR= 100 µA 35 µV
10 Hz ≤ f ≤ 10 kHz
∆V
V
R
HYST
Reverse Breakdown
Voltage Long Term
Stability
Thermal Hysteresis
t = 1000 hrs
T = 25˚C
I
= 100 µA
R
∆T = −40˚C to +125˚C
(Note 8)
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
(Note 4)
LM4040CIM3
LM4040DIZ
LM4040CIM7
Limits
(Note 5)
±
15
±
34
LM4040DIM3
LM4040DIZ
LM4040DIM7
Limits
(Note 5)
±
±
45 µA
60 65 65 µA (max)
65 70 70 µA (max)
±
20 ppm/˚C
±
15
±
15 ppm/˚C
±
100
±
≤ IR≤ 1 mA 0.4 mV
0.8 1.1 1.1 mV (max)
1.1 1.3 1.3 mV (max)
≤ 15 mA 2.7 mV
R
6.0 8.0 8.0 mV (max)
9.0 11.0 11.0 mV (max)
R
±
0.1˚C 120 ppm
0.9 1.2 1.2 Ω(max)
0.08 %
30
59
150
LM4040EIM7
LM4040EIZ
Limits
(Note 5)
±
60 mV (max)
±
89 mV (max)
±
150 ppm/˚C (max)
LM4040
Units
(Limit)
rms
LM4040-3.0
Electrical Characteristics (Extended Temperature Range)
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown
IR= 100 µA 3.000 V
Voltage
Reverse Breakdown
= 100 µA
I
R
Voltage
Tolerance(Note 6)
I
RMIN
Minimum Operating
Current
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
LM4040CEM3
(Note 4)
(Note 5)
47 µA
LM4040DEM3
Limits
Limits
(Note 5)
±
15
±
45
±
±
62 67 67 µA (max)
70 75 75 µA (max)
30
75
LM4040EEM3
Limits
(Note 5)
±
60 mV (max)
±
105 mV (max)
Units
(Limit)
www.national.com11
LM4040-3.0
Electrical Characteristics (Extended Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
Reverse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
/∆T Average Reverse
∆V
R
Breakdown Voltage
Temperature
Coefficient (Note 6)
/∆IRReverse Breakdown
∆V
R
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
I
RMIN
Voltage Change with
Operating Current
Change
(Note 7)
1mA≤ I
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz,
= 0.1 I
I
AC
Wideband Noise IR= 100 µA 35 µV
10 Hz ≤ f ≤ 10 kHz
∆V
V
HYST
Reverse Breakdown
R
Voltage Long Term
Stability
Thermal Hysteresis
t = 1000 hrs
T = 25˚C
= 100 µA
I
R
∆T = −40˚C to +125˚C
(Note 8)
MIN
to T
±
; all other limits TA=TJ= 25˚C. The grades C, D and E designate initial
MAX
0.5%,±1.0% and±2.0%, respectively.
LM4040CEM3
(Note 4)
Limits
(Note 5)
±
20 ppm/˚C
±
15
±
15 ppm/˚C
±
100
≤ IR≤ 1 mA 0.4 mV
0.8 1.1 1.1 mV (max)
1.1 1.3 1.3 mV (max)
≤ 15 mA 2.7 mV
R
6.0 8.0 8.0 mV (max)
9.0 11.0 11.0 mV (max)
0.4 Ω
R
±
0.1˚C
120 ppm
0.9 1.2 1.2 Ω (max)
0.08 %
LM4040DEM3
Limits
(Note 5)
±
150
(Continued)
LM4040EEM3
Limits
(Note 5)
±
150 ppm/˚C (max)
Units
(Limit)
rms
LM4040-4.1
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown Voltage IR= 100 µA 4.096 V
Reverse Breakdown Voltage
Tolerance (Note 6)
I
RMIN
∆V
Minimum Operating Current 50 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient(Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note 7)
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
LM4040AIM3
(Note 4)
LM4040AIZ
Limits
(Note 5)
I
= 100 µA
R
±
4.1
±
31
68 68 µA (max)
73 73 µA (max)
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
≤ IR≤ 1 mA 0.5 mV
I
RMIN
±
30 ppm/˚C
±
20
±
20 ppm/˚C
±
100
0.9 0.9 mV (max)
1.2 1.2 mV (max)
1mA≤ I
≤ 15 mA 3.0 mV
R
7.0 7.0 mV (max)
10.0 10.0 mV (max)
LM4040BIM3
LM4040BIZ
LM4040BIM7
Limits
(Note 5)
±
8.2 mV (max)
±
35 mV (max)
±
100 ppm/˚C (max)
Units
(Limit)
www.national.com 12
LM4040-4.1
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
Z
R
Reverse Dynamic
Impedance
e
∆V
N
Wideband Noise IR= 100 µA 80 µV
Reverse Breakdown Voltage
R
Long Term Stability
V
HYST
Thermal Hysteresis
(Note 8)
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
LM4040AIM3
(Note 4)
LM4040AIZ
Limits
(Note 5)
IR= 1 mA, f = 120 Hz, 0.5 Ω
I
AC
= 0.1 I
R
1.0 1.0 Ω (max)
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
±
T = 25˚C
= 100 µA
I
R
0.1˚C
∆T = −40˚C to +125˚C
120 ppm
0.08 %
(Continued)
LM4040BIM3
LM4040BIZ
LM4040BIM7
Limits
(Note 5)
LM4040
Units
(Limit)
rms
www.national.com13
LM4040-4.1
Electrical Characteristics (Industrial Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown Voltage IR= 100 µA 4.096 V
Reverse Breakdown Voltage
Tolerance (Note 6)
I
RMIN
∆V
Minimum Operating Current 50 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient (Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note 7)
Z
R
Reverse Dynamic
Impedance
e
∆V
N
Wideband Noise IR= 100 µA 80 µV
Reverse Breakdown Voltage
R
Long Term Stability
V
HYST
Thermal Hysteresis
(Note 8)
to T
MIN
±
0.5% and±1.0%, respectively.
; all other limits TA=TJ= 25˚C. The grades C and D designate initial Re-
MAX
LM4040CIM3
(Note 4)
LM4040CIZ
LM4040CIM7
(Note 5)
I
= 100 µA
R
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
≤ IR≤ 1 mA 0.5 mV
I
RMIN
1mA≤ I
≤ 15 mA 3.0 mV
R
±
30 ppm/˚C
±
20
±
20 ppm/˚C
IR= 1 mA, f = 120 Hz, 0.5 Ω
I
= 0.1 I
AC
R
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
±
T = 25˚C
= 100 µA
I
R
0.1˚C
∆T = −40˚C to +125˚C
120 ppm
0.08 %
LM4040DIM3
LM4040BIZ
Units
(Limit)
LM4040DIM7
Limits
Limits
(Note 5)
±
20
±
47
±
41 mV (max)
±
81 mV (max)
68 73 µA (max)
73 78 µA (max)
±
100
±
150 ppm/˚C (max)
0.9 1.2 mV (max)
1.2 1.5 mV (max)
7.0 9.0 mV (max)
10.0 13.0 mV (max)
1.0 1.3 Ω (max)
rms
www.national.com 14
LM4040-5.0
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown Voltage IR= 100 µA 5.000 V
Reverse Breakdown Voltage
Tolerance (Note 6)
I
RMIN
∆V
Minimum Operating Current 54 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient (Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note 7)
Z
R
Reverse Dynamic
Impedance
e
∆V
N
Wideband Noise IR= 100 µA 80 µV
Reverse Breakdown Voltage
R
Long Term Stability
V
HYST
Thermal Hysteresis
(Note 8)
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
LM4040AIM3
(Note 4)
LM4040AIZ
Limits
(Note 5)
I
= 100 µA
R
±
5.0
±
38
74 74 µA (max)
80 80 µA (max)
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
≤ IR≤ 1 mA 0.5 mV
I
RMIN
±
30 ppm/˚C
±
20
±
20 ppm/˚C
±
100
1.0 1.0 mV (max)
1.4 1.4 mV (max)
1mA≤ I
≤ 15 mA 3.5 mV
R
8.0 8.0 mV (max)
12.0 12.0 mV (max)
IR= 1 mA, f = 120 Hz, 0.5 Ω
I
AC
= 0.1 I
R
1.1 1.1 Ω (max)
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
= 100 µA
±
0.1˚C 120 ppm
0.08 %
T = 25˚C
I
R
∆T = −40˚C to +125˚C
LM4040BIM3
LM4040BIZ
LM4040BIM7
Limits
(Note 5)
±
10 mV (max)
±
43 mV (max)
±
100 ppm/˚C (max)
LM4040
Units
(Limit)
rms
www.national.com15
LM4040-5.0
Electrical Characteristics (Industrial Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical
V
R
Reverse Breakdown Voltage IR= 100 µA 5.000 V
Reverse Breakdown Voltage
Tolerance (Note 6)
I
RMIN
∆V
Minimum Operating Current 54 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient (Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note 7)
Z
R
Reverse Dynamic
Impedance
e
∆V
N
Wideband Noise IR= 100 µA 80 µV
Reverse Breakdown Voltage
R
Long Term Stability
V
HYST
Thermal Hysteresis
(Note 8)
to T
MIN
±
0.5% and±1.0%, respectively.
; all other limits TA=TJ= 25˚C. The grades C and D designate initial Re-
MAX
LM4040CIM3
(Note 4)
LM4040CIZ
LM4040CIM7
(Note 5)
I
= 100 µA
R
=10mA
I
R
I
=1mA
R
I
= 100 µA
R
≤ IR≤ 1 mA 0.5 mV
I
RMIN
1mA≤ I
≤ 15 mA 3.5 mV
R
±
30 ppm/˚C
±
20
±
20 ppm/˚C
IR= 1 mA, f = 120 Hz, 0.5 Ω
I
= 0.1 I
AC
R
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
= 100 µA
±
0.1˚C 120 ppm
0.08 %
T = 25˚C
I
R
∆T = −40˚C to +125˚C
LM4040DIM3
LM4040BIZ
Units
(Limit)
LM4040DIM7
Limits
Limits
(Note 5)
±
25
±
58
±
50 mV (max)
±
99 mV (max)
74 79 µA (max)
80 85 µA (max)
±
100
±
150 ppm/˚C (max)
1.0 1.3 mV (max)
1.4 1.8 mV (max)
8.0 10.0 mV (max)
12.0 15.0 mV (max)
1.1 1.5 Ω (max)
rms
www.national.com 16
LM4040-5.0
Electrical Characteristics (Extended Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
Symbol Parameter Conditions Typical LM4040CEM3 LM4040DEM3 Units
V
R
Reverse Breakdown Voltage IR= 100 µA 5.000 V
Reverse Breakdown Voltage
Tolerance(Note 6)
I
RMIN
∆V
Minimum Operating Current 54 µA
/∆T Average Reverse
R
Breakdown Voltage
Temperature Coefficient
(Note 6)
∆V
/∆IRReverse Breakdown Voltage
R
Change with Operating
Current Change (Note 7)
Z
R
Reverse Dynamic
Impedance
e
∆V
N
Wideband Noise IR= 100 µA 80 µV
Reverse Breakdown Voltage
R
Long Term Stability
V
HYST
Thermal Hysteresis
(Note 8)
to T
MIN
±
0.5% and±1.0%, respectively.
; all other limits TA=TJ= 25˚C. The grades C and D designate initial Re-
MAX
Limits Limits (Limit)
(Note 4) (Note 5) (Note 5)
I
= 100 µA
R
±
25
±
75
±
50 mV (max)
±
125 mV (max)
74 79 µA (max)
83 88 µA (max)
=10mA
I
R
I
=1mA
R
= 100 µA
I
R
≤ IR≤ 1 mA 0.5 mV
I
RMIN
±
30 ppm/˚C
±
20
±
20 ppm/˚C
±
100
±
150 ppm/˚C (max)
1.0 1.0 mV (max)
1.4 1.8 mV (max)
1mA≤ I
≤ 15 mA 3.5 mV
R
8.0 8.0 mV (max)
12.0 15.0 mV (max)
IR= 1 mA, f = 120 Hz, IAC=
0.1 I
R
0.5 Ω
1.1 1.1 Ω (max)
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
±
T = 25˚C
= 100 µA
I
R
0.1˚C
∆T = −40˚C to +125˚C
120 ppm
0.08 %
rms
LM4040
www.national.com17
LM4040-8.2
Electrical Characteristics (Industrial Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
Symbol Parameter Conditions
V
R
Reverse Breakdown Voltage IR= 150 µA 8.192 V
Reverse Breakdown Voltage
I
= 150 µA
R
Tolerance (Note 6)
I
RMIN
∆V
∆V
Minimum Operating Current 67 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient(Note 6)
/∆IRReverse Breakdown Voltage
R
=10mA
I
R
I
=1mA
R
I
= 150 µA
R
≤ IR≤ 1 mA 0.6 mV
I
RMIN
Change with Operating
Current Change (Note 7)
1mA≤ I
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz, 0.6 Ω
I
AC
Wideband Noise IR= 150 µA 130 µV
≤ 15 mA 7.0 mV
R
= 0.1 I
R
10 Hz ≤ f ≤ 10 kHz
∆V
V
HYST
Reverse Breakdown Voltage
R
Long Term Stability
Thermal Hysteresis
t = 1000 hrs
= 150 µA
±
0.1˚C 120 ppm
T = 25˚C
I
R
∆T = −40˚C to +125˚C
(Note 8)
Typical
(Note 4)
LM4040AIM3 LM4040BIM3
LM4040AIZ LM4040BIZ
Limits Limits
(Note 5) (Note 5)
±
8.2
±
61
±
16 mV (max)
±
70 mV (max)
91 91 µA (max)
95 95 µA (max)
±
40 ppm/˚C
±
20
±
20 ppm/˚C
±
100
±
100 ppm/˚C (max)
1.3 1.3 mV (max)
2.5 2.5 mV (max)
10.0 10.0 mV (max)
18.0 18.0 mV (max)
1.5 1.5 Ω (max)
0.08 %
Units
(Limit)
rms
www.national.com 18
LM4040-8.2
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
to T
MIN
±
0.5% and±1.0%, respectively.
; all other limits TA=TJ= 25˚C. The grades C and D designate initial Re-
MAX
LM4040
Symbol Parameter Conditions
V
R
Reverse Breakdown Voltage IR= 150 µA 8.192 V
Reverse Breakdown Voltage
I
= 150 µA
R
Tolerance (Note 6)
I
RMIN
∆V
∆V
Minimum Operating Current 67 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient (Note 6)
/∆IRReverse Breakdown Voltage
R
=10mA
I
R
I
=1mA
R
I
= 150 µA
R
≤ IR≤ 1 mA 0.6 mV
I
RMIN
Change with Operating
Current Change (Note 7)
1mA≤ I
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz, 0.6 Ω
I
AC
Wideband Noise IR= 150 µA 130 µV
≤ 15 mA 7.0 mV
R
= 0.1 I
R
10 Hz ≤ f ≤ 10 kHz
∆V
V
HYST
Reverse Breakdown Voltage
R
Long Term Stability
Thermal Hysteresis
t = 1000 hrs
= 150 µA
±
0.1˚C 120 ppm
T = 25˚C
I
R
∆T = −40˚C to +125˚C
(Note 8)
Typical
(Note 4)
LM4040CIM3 LM4040DIM3
LM4040CIZ LM4040DIZ
Limits Limits
(Note 5) (Note 5)
±
41
±
94
±
82 mV (max)
±
162 mV (max)
91 96 µA (max)
95 100 µA (max)
±
40 ppm/˚C
±
20
±
20 ppm/˚C
±
100
±
150 ppm/˚C (max)
1.3 1.7 mV (max)
2.5 3.0 mV (max)
10.0 15.0 mV (max)
18.0 24.0 mV (max)
1.5 1.9 Ω (max)
0.08 %
Units
(Limit)
rms
www.national.com19
LM4040-10.0
Electrical Characteristics (Industrial Temperature Range)
LM4040
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
to T
MIN
±
0.1% and±0.2%, respectively.
; all other limits TA=TJ= 25˚C. The grades A and B designate initial Re-
MAX
Symbol Parameter Conditions
V
R
Reverse Breakdown Voltage IR= 150 µA 10.00 V
Reverse Breakdown Voltage
I
= 150 µA
R
Tolerance (Note 6)
I
RMIN
∆V
∆V
Minimum Operating Current 75 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient (Note 6)
/∆IRReverse Breakdown Voltage
R
=10mA
I
R
I
=1mA
R
I
= 150 µA
R
≤ IR≤ 1 mA 0.8 mV
I
RMIN
Change with Operating
Current Change (Note 7)
1mA≤ I
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz, 0.7 Ω
I
AC
Wideband Noise IR= 150 µA 180 µV
≤ 15 mA 8.0 mV
R
= 0.1 I
R
10 Hz ≤ f ≤ 10 kHz
∆V
V
HYST
Reverse Breakdown Voltage
R
Long Term Stability
Thermal Hysteresis
t = 1000 hrs
= 150 µA
±
0.1˚C 120 ppm
T = 25˚C
I
R
∆T = −40˚C to +125˚C 0.08 %
(Note 8)
Typical
(Note 4)
LM4040AIM3 LM4040BIM3
LM4040AIZ LM4040BIZ
Limits Limits
(Note 5) (Note 5)
±
10
±
75
±
20 mV (max)
±
85 mV (max)
100 100 µA (max)
103 103 µA (max)
±
40 ppm/˚C
±
20
±
20 ppm/˚C
±
100
±
100 ppm/˚C (max)
1.5 1.5 mV (max)
3.5 3.5 mV (max)
12.0 12.0 mV (max)
23.0 23.0 mV (max)
1.7 1.7 Ω (max)
Units
(Limit)
rms
www.national.com 20
LM4040-10.0
Electrical Characteristics (Industrial Temperature Range)
Boldface limits apply for TA=TJ=T
verse Breakdown Voltage tolerances of
to T
MIN
±
0.5% and±1.0%, respectively.
; all other limits TA=TJ= 25˚C. The grades C and D designate initial Re-
MAX
LM4040
Symbol Parameter Conditions
V
R
Reverse Breakdown Voltage IR= 150 µA 10.00 V
Reverse Breakdown Voltage
I
= 150 µA
R
Tolerance (Note 6)
I
RMIN
∆V
∆V
Minimum Operating Current 75 µA
/∆T Average Reverse Breakdown
R
Voltage Temperature
Coefficient (Note 6)
/∆IRReverse Breakdown Voltage
R
=10mA
I
R
I
=1mA
R
I
= 150 µA
R
≤ IR≤ 1 mA 0.8 mV
I
RMIN
Change with Operating
Current Change (Note 7)
1mA≤ I
Z
R
e
N
Reverse Dynamic
Impedance
IR= 1 mA, f = 120 Hz, 0.7 Ω
I
AC
Wideband Noise IR= 150 µA
≤ 15 mA 8.0 mV
R
= 0.1 I
R
10 Hz ≤ f ≤ 10 kHz
∆V
Reverse Breakdown Voltage
R
Long Term Stability
t = 1000 hrs
T = 25˚C
±
0.1˚C 120 ppm
Typical
(Note 4)
LM4040CIM3 LM4040DIM3
LM4040CIZ LM4040DIZ
Limits Limits
(Note 5) (Note 5)
±
±
50
115
±
100 mV (max)
±
198 mV (max)
100 110 µA (max)
103 113 µA (max)
±
40 ppm/˚C
±
20
±
20 ppm/˚C
±
100
±
150 ppm/˚C (max)
1.5 2.0 mV (max)
3.5 4.0 mV (max)
12.0 18.0 mV (max)
23.0 29.0 mV (max)
1.7 2.3 Ω (max)
180 µV
Units
(Limit)
rms
V
HYST
Thermal Hysteresis
(Note 8)
= 150 µA
I
R
∆T = −40˚C to +125˚C 0.08 %
www.national.com21
Electrical Characteristics(Notes)
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
LM4040
functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test
conditions.
Note 2: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
ambient thermal resistance), and T
number given in the Absolute Maximum Ratings, whichever is lower. For the LM4040, T
is 326˚C/W for the SOT-23 package, and 180˚C/W with 0.4" lead length and 170˚C/W with 0.125" lead length for the TO-92 package and 415˚C/W for the SC70
Package.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. The machine model is a 200 pF capacitor discharged
directly into each pin.
Note 4: Typicals are at T
Note 5: Limits are 100% production tested at 25˚C. Limits over temperature are guaranteed through correlation using Statistical Quality Control (SQC) methods.
The limits are used to calculate National’s AOQL.
Note 6: The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage Tolerance
±
[(∆VR/∆T)(max∆T)(VR)]. Where, ∆VR/∆T is the VRtemperature coefficient, max∆T is the maximum difference in temperature from the reference point of 25˚C to
T
or T
MIN
max∆T = 65˚C is shown below:
, and VRis the reverse breakdown voltage. The total over-temperature tolerance for the different grades in the industrial temperature range where
MAX
= 25˚C and represent most likely parametric norm.
J
(ambient temperature). The maximum allowable power dissipation at any temperature is PD
A
= 125˚C, and the typical thermal resistance (θJA), when board mounted,
Jmax
A-grade:±0.75% =±0.1%±100 ppm/˚C x 65˚C
B-grade:
C-grade:
D-grade:
E-grade:
The total over-temperature tolerance for the different grades in the exteded temperature range where max ∆T = 100 ˚C is shown below:
±
0.85% =±0.2%±100 ppm/˚C x 65˚C
±
1.15% =±0.5%±100 ppm/˚C x 65˚C
±
1.98% =±1.0%±150 ppm/˚C x 65˚C
±
2.98% =±2.0%±150 ppm/˚C x 65˚C
C-grade:±1.5% =±0.5%±100 ppm/˚C x 100˚C
D-grade:
E-grade:
Therefore, as an example, the A-grade LM4040-2.5 has an over-temperature Reverse Breakdown Voltage tolerance of±2.5V x 0.75% =±19 mV.
Note 7: Load regulation is measured on pulse basis from no load to the specified load current. Output changes due to die temperature change must be taken into
account separately.
Note 8: Thermal hysteresis is defined as the difference in voltage measured at +25˚C after cycling to temperature -40˚C and the 25˚C measurement after cycling
to temperature +125˚C.
±
2.5% =±1.0%±150 ppm/˚C x 100˚C
±
3.5% =±2.0%±150 ppm/˚C x 100˚C
(maximum junction temperature), θJA(junction to
Jmax
max
=(T
Jmax−TA
)/θJAor the
www.national.com 22
Typical Performance Characteristics
LM4040
Temperature Drift for Different
Output Impedance vs Frequency
Average Temperature Coefficient
01132304
Output Impedance vs Frequency Reverse Characteristics and
Minimum Operating Current
01132310
Noise Voltage vs Frequency
01132311
01132313
01132312
www.national.com23
Start-Up Characteristics
LM4040
LM4040-5.0 RS= 30k LM4040-10.0 RS= 30k
LM4040-2.5 RS= 30k
01132305
01132307
Functional Block Diagram
01132308 01132309
01132314
www.national.com 24
Applications Information
The LM4040 is a precision micro-power curvature-corrected
bandgap shunt voltage reference. For space critical applications, the LM4040 is available in the sub-miniature SOT-23
and SC70 surface-mount package. The LM4040 has been
designed for stable operation without the need of an external
capacitor connected between the “+” pin and the “−” pin. If,
however, a bypass capacitor is used, the LM4040 remains
stable. Reducing design effort is the availability of several
fixed reverse breakdown voltages: 2.048V, 2.500V, 3.000V,
4.096V, 5.000V, 6.000, 8.192V, and 10.000V. The minimum
operating current increases from 60 µA for the LM4040-
2.048 and LM4040-2.5 to 100 µA for the LM4040-10.0. All
versions have a maximum operating current of 15 mA.
LM4040s in the SOT-23 packages have a parasitic Schottky
diode between pin 2 (−) and pin 3 (Die attach interface
contact). Therefore, pin 3 of the SOT-23 package must be
left floating or connected to pin 2.
LM4040s in the SC70 have a parasitic Schottky diode between pin 1 (−) and pin 2 (Die attach interface contact).
Therefore, pin 2 must be left floating or connected to pin1.
The 4.096V version allows single +5V 12-bit ADCs or DACs
to operate with an LSB equal to 1 mV. For 12-bit ADCs or
DACs that operate on supplies of 10V or greater, the 8.192V
version gives 2 mV per LSB.
The typical thermal hysteresis specification is defined as the
change in +25˚C voltage measured after thermal cycling.
The device is thermal cycled to temperature -40˚C and then
measured at 25˚C. Next the device is thermal cycled to
temperature +125˚C and again measured at 25˚C. The resulting V
delta shift between the 25˚C measurements is
OUT
thermal hysteresis. Thermal hysteresis is common in precision references and is induced by thermal-mechanical package stress. Changes in environmental storage temperature,
operating temperature and board mounting temperature are
all factors that can contribute to thermal hysteresis.
In a conventional shunt regulator application (Figure 1),an
external series resistor (R
ply voltage and the LM4040. R
flows through the load (I
current and supply voltage may vary, R
enough to supply at least the minimum acceptable I
) is connected between the sup-
S
determines the current that
S
) and the LM4040 (IQ). Since load
L
should be small
S
Q
to the
LM4040 even when the supply voltage is at its minimum and
the load current is at its maximum value. When the supply
voltage is at its maximum and I
is at its minimum, RSshould
L
be large enough so that the current flowing through the
LM4040 is less than 15 mA.
is determined by the supply voltage, (VS), the load and
R
S
operating current, (I
breakdown voltage, V
and IQ), and the LM4040’s reverse
L
.
R
LM4040
Typical Applications
01132315
FIGURE 1. Shunt Regulator
www.national.com25
Typical Applications (Continued)
LM4040
**Ceramic monolithic
*Tantalum
01132316
FIGURE 2. LM4040-4.1’s Nominal 4.096 breakdown voltage gives ADC12451 1 mV/LSB
www.national.com 26
Typical Applications (Continued)
LM4040
01132317
FIGURE 3. Bounded amplifier reduces saturation-induced delays and can prevent succeeding stage damage.
±
Nominal clamping voltage is
11.5V (LM4040’s reverse breakdown voltage +2 diode VF).
01132318
FIGURE 4. Protecting Op Amp input. The bounding voltage is±4V with the LM4040-2.5
(LM4040’s reverse breakdown voltage + 3 diode V
).
F
www.national.com27
Typical Applications (Continued)
LM4040
01132319
FIGURE 5. Precision±4.096V Reference
01132321
FIGURE 6. Precision 1 µA to 1 mA Current Sources
www.national.com 28
01132322
Physical Dimensions inches (millimeters)
unless otherwise noted
LM4040
Plastic Surface Mount Package (M3)
NS Package Number MF03A
(JEDEC Registration TO-236AB)
Plastic Package (Z)
NS Package Number Z03A
www.national.com29
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
LM4040 Precision Micropower Shunt Voltage Reference
Molded Package (SC70)
NS Package Number MAA05A
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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
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whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
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Email: support@nsc.com
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2. A critical component is any component of a life
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Fax: 81-3-5639-7507
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
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