Texas Instruments LM4040A, LM4040B, LM4040C, LM4040D User Manual

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LM4040A,LM4040B
LM4040C,LM4040D

SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

LM4040 Precision Micropower Shunt Voltage Reference

1 Features

1

• Fixed Output Voltages of 2.048 V, 2.5 V, 3 V,

4.096 V, 5 V, 8.192 V, and 10 V

• Tight Output Tolerances and Low Temperature
Coefficient

– Max 0.1%, 100 ppm/°C – A Grade
– Max 0.2%, 100 ppm/°C – B Grade
– Max 0.5%, 100 ppm/°C – C Grade
– Max 1.0%, 150 ppm/°C – D Grade

• Low Output Noise: 35 μV

RMS

Typ

• Wide Operating Current Range: 45 μA Typ to 15
mA

• Stable With All Capacitive Loads; No Output
Capacitor Required

• Available in Extended Temperature Range: –40°C
to 125°C

2 Applications

• Data-Acquisition Systems

• Power Supplies and Power-Supply Monitors

• Instrumentation and Test Equipment

• Process Controls

• Precision Audio

• Automotive Electronics

• Energy Management

• Battery-Powered Equipment

3 Description

The LM4040 series of shunt voltage references are
versatile, easy-to-use references that cater to a vast
array of applications. The 2-pin fixed-output device
requires no external capacitors for operation and is
stable with all capacitive loads. Additionally, the
reference offers low dynamic impedance, low noise,
and low temperature coefficient to ensure a stable
output voltage over a wide range of operating
currents and temperatures. The LM4040 uses fuse
and Zener-zap reverse breakdown voltage trim during
wafer sort to offer four output voltage tolerances,
ranging from 0.1% (max) for the A grade to 1% (max)
for the D grade. Thus, a great deal of flexibility is
offered to designers in choosing the best cost-to­performance ratio for their applications.

Packaged in space-saving SC-70 and SOT-23-3
packages and requiring a minimum current of 45 μA
(typ), the LM4040 also is ideal for portable
applications. The LM4040xI is characterized for
operation over an ambient temperature range of
–40°C to 85°C. The LM4040xQ is characterized for
operation over an ambient temperature range of
–40°C to 125°C.

Device Information

PART NUMBER PACKAGE (PIN) BODY SIZE (NOM)

LM4040

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

SOT-23 (3) 2.92 mm × 1.30 mm
SC70 (6) 2.00 mm × 1.25 mm

(1)

Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

LM4040A,LM4040B
LM4040C,LM4040D

SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

www.ti.com

Table of Contents

1 Features.................................................................. 1

2 Applications ........................................................... 1

3 Description ............................................................. 1

4 Revision History..................................................... 2

5 Pin Configuration and Functions......................... 4

6 Specifications......................................................... 5

6.1 Absolute Maximum Ratings ...................................... 5

6.2 ESD Ratings.............................................................. 5

6.3 Recommended Operating Conditions....................... 5

6.4 Thermal Information.................................................. 5

6.5 LM4040A20I, LM4040B20I Electrical

Characteristics ........................................................... 6

6.6 LM4040C20I, LM4040D20I Electrical

Characteristics ........................................................... 7

6.7 LM4040C20Q, LM4040D20Q Electrical

Characteristics ........................................................... 8

6.8 LM4040A25I, LM4040B25I Electrical

Characteristics ........................................................... 9

6.9 LM4040C25I, LM4040D25I Electrical

Characteristics ......................................................... 10

6.10 LM4040C25Q, LM4040D25Q Electrical

Characteristics ......................................................... 11

6.11 LM4040A30I, LM4040B30I Electrical

Characteristics ......................................................... 12

6.12 LM4040C30I, LM4040D30I Electrical

Characteristics ......................................................... 13

6.13 LM4040C30Q, LM4040D30Q Electrical

Characteristics ......................................................... 14

6.14 LM4040A41I, LM4040B41I Electrical

Characteristics ......................................................... 15

6.15 LM4040C41I, LM4040D41I Electrical

Characteristics ......................................................... 16

6.16 LM4040A50I, LM4040B50I Electrical

Characteristics ......................................................... 17

6.17 LM4040C50I, LM4040D50I Electrical

Characteristics ......................................................... 18

6.18 LM4040C50Q, LM4040D50Q Electrical

Characteristics ......................................................... 19

6.19 LM4040A82I, LM4040B82I Electrical

Characteristics ......................................................... 20

6.20 LM4040C82I, LM4040D82I Electrical

Characteristics ......................................................... 21

6.21 LM4040A10I, LM4040B10I Electrical

Characteristics ......................................................... 22

6.22 LM4040C10I, LM4040D10I Electrical

Characteristics ......................................................... 23

6.23 Typical Characteristics.......................................... 24

7 Detailed Description............................................ 25

7.1 Overview ................................................................. 25

7.2 Functional Block Diagram....................................... 25

7.3 Feature Description................................................. 25

7.4 Device Functional Modes........................................ 25

8 Applications and Implementation ...................... 26

8.1 Application Information............................................ 26

8.2 Typical Applications ................................................ 26

9 Power Supply Recommendations...................... 29

10 Layout................................................................... 29

10.1 Layout Guidelines ................................................. 29

10.2 Layout Example .................................................... 29

11 Device and Documentation Support................. 30

11.1 Related Links ........................................................ 30

11.2 Trademarks........................................................... 30

11.3 Electrostatic Discharge Caution............................ 30

11.4 Glossary................................................................ 30

12 Mechanical, Packaging, and Orderable

Information........................................................... 30

4 Revision History

Changes from Revision M (January 2015) to Revision N Page

• Changed generic part number to include shorter list (LM4040A/B/C/D)................................................................................ 1

• Added Average temperature coefficient of reverse breakdown voltage footnote to all electrical tables................................ 6

• Changed Thermal hysteresis in electrical characteristics tables............................................................................................ 6

Changes from Revision L (January 2009) to Revision M Page

• Added Applications, Device Information table, Pin Functions table, ESD Ratings table, Thermal Information table,
Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply
Recommendations section, Layout section, Device and Documentation Support section, and Mechanical,

Packaging, and Orderable Information section. ..................................................................................................................... 1

• Deleted Ordering Information table. ....................................................................................................................................... 1

2

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LM4040A,LM4040B
LM4040C,LM4040D

SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

(1)

ORDERABLE

PART NUMBER

T

A

–40°C to 85°C

–40°C to 85°C

–40°C to 85°C

–40°C to 125°C

Device Comparison Table

DEVICE
GRADE

A grade:

0.1% initial
accuracy

and
100 ppm/°C
temperature

coefficient

B grade:

0.2% initial
accuracy

and
100 ppm/°C
temperature

coefficient

C grade:

0.5% initial
accuracy

and
100 ppm/°C
temperature

coefficient

D grade:

1.0% initial
accuracy

and
150 ppm/°C
temperature

coefficient

C grade:

0.5% initial
accuracy

and
100 ppm/°C
temperature

coefficient

D grade:

1.0% initial
accuracy

and
150 ppm/°C
temperature

coefficient

V

KA

2.048 V LM4040A20I

2.5 V LM4040A25I
3 V LM4040A30I

4.096 V LM4040A41I
5 V LM4040A50I

8.192 V LM4040A82I

10 V LM4040A10I

2.048 V LM4040B20I

2.5 V LM4040B25I
3 V LM4040B30I

4.096 V LM4040B41I
5 V LM4040B50I

8.192 V LM4040B82I

10 V LM4040B10I

2.048 V LM4040C20I

2.5 V LM4040C25I
3 V LM4040C30I

4.096 V LM4040C41I
5 V LM4040C50I

8.192 V LM4040C82I

10 V LM4040C10I

2.048 V LM4040D20I

2.5 V LM4040D25I
3 V LM4040D30I

4.096 V LM4040D41I
5 V LM4040D50I

8.192 V LM4040D82I

10 V LM4040D10I

2.048 V LM4040C20Q

2.5 V LM4040C25Q
3 V LM4040C30Q

5 V LM4040C50Q

2.048 V LM4040D20Q

2.5 V LM4040D25Q
3 V LM4040D30Q

5 V LM4040D50Q

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

Product Folder Links: LM4040A LM4040B LM4040C LM4040D

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3

* Pin 3 is attached to substrate and must be

connected to ANODE or left open.

DBZ (SOT-23) PACKAGE

(TOP VIEW)

CATHODE

ANODE

DCK (SC-70) PACKAGE

(TOP VIEW)

ANODE

NC

CATHODE

NC

NC

1

2

3*

1

2

3

5

4

NC – No internal connection

LM4040A,LM4040B
LM4040C,LM4040D

SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

5 Pin Configuration and Functions

www.ti.com

Pin Functions

PIN

NAME DBZ DCK

CATHODE 1 3 I/O Shunt Current/Voltage input
ANODE 2 1 O Common pin, normally connected to ground
NC — 2, 4, 5 I No Internal Connection
* 3 — I Substrate Connection

TYPE DESCRIPTION

4

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LM4040C,LM4040D

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SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

6 Specifications

6.1 Absolute Maximum Ratings

over free-air temperature range (unless otherwise noted)

I

Z

T

J

T

stg

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

Continuous cathode current –10 25 mA
Operating virtual junction temperature 150 °C
Storage temperature range –65 150 °C

only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating

Conditionsis not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6.2 ESD Ratings

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins

V

(ESD)

Electrostatic discharge

Charged device model (CDM), per JEDEC specification JESD22-C101,

(2)

all pins

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

I

Cathode current

Z

TAFree-air temperature

(1) See parametric tables

(1)

MIN MAX UNIT

VALUE UNIT

(1)

±2000
±1000

MIN MAX UNIT

(1)

LM4040xxxI –40 85
LM4040xxxQ –40 125

V

15 mA

°C

6.4 Thermal Information

LM4040

THERMAL METRIC

R

θJA

Junction-to-ambient thermal resistance 206 252 °C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

(1)

UNITDBZ DCK

3 PINS 5 PINS

Product Folder Links: LM4040A LM4040B LM4040C LM4040D

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LM4040C,LM4040D

SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

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6.5 LM4040A20I, LM4040B20I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040A20I LM4040B20I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 2.048 2.048 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –2 2 –4.1 4.1

Full range –15 15 –17 17

25°C 45 75 45 75

Full range 80 80

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±100

IZ= 100 μA 25°C ±15 ±15

25°C 0.3 0.8 0.3 0.8

Full range 1 1

25°C 2.5 6 2.5 6

Full range 8 8

25°C 0.3 0.8 0.3 0.8 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

6

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Z

DI

Z

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LM4040C,LM4040D

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SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

6.6 LM4040C20I, LM4040D20I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040C20I LM4040D20I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 2.048 2.048 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –10 10 –20 20

Full range –23 23 –40 40

25°C 45 75 45 75

Full range 80 80

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±150

IZ= 100 μA 25°C ±15 ±15

25°C 0.3 0.8 0.3 1

Full range 1 1.2

25°C 2.5 6 2.5 8

Full range 8 10

25°C 0.3 0.9 0.3 1.1 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

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6.7 LM4040C20Q, LM4040D20Q Electrical Characteristics

at extended temperature range, full-range TA= –40°C to 125°C (unless otherwise noted)

LM4040C20Q LM4040D20Q

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 2.048 2.048 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –10 10 –20 20

Full range –30 30 –50 50

25°C 45 75 45 75

Full range 80 80

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±150

IZ= 100 μA 25°C ±15 ±15

25°C 0.3 0.8 0.3 1

Full range 1 1.2

25°C 2.5 6 2.5 8

Full range 8 10

25°C 0.3 0.9 0.3 1.1 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

8

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Z

DI

Z

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LM4040C,LM4040D

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SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

6.8 LM4040A25I, LM4040B25I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040A25I LM4040B25I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 2.5 2.5 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –2.5 2.5 –5 5

Full range –19 19 –21 21

25°C 45 75 45 75

Full range 80 80

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±100

IZ= 100 μA 25°C ±15 ±15

25°C 0.3 0.8 0.3 0.8

Full range 1 1

25°C 2.5 6 2.5 6

Full range 8 8

25°C 0.3 0.8 0.3 0.8 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

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6.9 LM4040C25I, LM4040D25I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040C25I LM4040D25I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 2.5 2.5 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –12 12 –25 25

Full range –29 29 –49 49

25°C 45 75 45 75

Full range 80 80

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±150

IZ= 100 μA 25°C ±15 ±15

25°C 0.3 0.8 0.3 1

Full range 1 1.2

25°C 2.5 6 2.5 8

Full range 8 10

25°C 0.3 0.9 0.3 1.1 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

10

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6.10 LM4040C25Q, LM4040D25Q Electrical Characteristics

at extended temperature range, full-range TA= –40°C to 125°C (unless otherwise noted)

LM4040C25Q LM4040D25Q

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 2.5 2.5 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –12 12 –25 25

Full range –38 38 –63 63

25°C 45 75 45 75

Full range 80 80

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±150

IZ= 100 μA 25°C ±15 ±15

25°C 0.3 0.8 0.3 1

Full range 1 1.2

25°C 2.5 6 2.5 8

Full range 8 10

25°C 0.3 0.9 0.3 1.1 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

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6.11 LM4040A30I, LM4040B30I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040A30I LM4040B30I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 3 3 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –3 3 –6 6

Full range –22 22 –26 26

25°C 47 77 47 77

Full range 82 82

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±100

IZ= 100 μA 25°C ±15 ±15

25°C 0.6 0.8 0.6 0.8

Full range 1.1 1.1

25°C 2.7 6 2.7 6

Full range 9 9

25°C 0.4 0.9 0.4 0.9 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

12

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6.12 LM4040C30I, LM4040D30I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040C30I LM4040D30I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 3 3 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –15 15 –30 30

Full range –34 34 –59 59

25°C 45 77 45 77

Full range 82 82

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±150

IZ= 100 μA 25°C ±15 ±15

25°C 0.4 0.8 1.4 1

Full range 1.1 1.3

25°C 2.7 6 2.7 8

Full range 9 11

25°C 0.4 0.9 0.4 1.2 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

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6.13 LM4040C30Q, LM4040D30Q Electrical Characteristics

at extended temperature range, full-range TA= –40°C to 125°C (unless otherwise noted)

LM4040C30Q LM4040D30Q

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 3 3 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –15 15 –30 30

Full range –45 45 –75 75

25°C 47 77 47 77

Full range 82 82

IZ= 10 mA 25°C ±20 ±20

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±15 ±15

Full range ±100 ±150

IZ= 100 μA 25°C ±15 ±15

25°C 0.4 0.8 0.4 1.1

Full range 1.1 1.3

25°C 2.7 6 2.7 8

Full range 9 11

25°C 0.4 0.9 0.4 1.2 Ω

25°C 35 35 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

14

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6.14 LM4040A41I, LM4040B41I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040A41I LM4040B41I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 4.096 4.096 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –4.1 4.1 –8.2 8.2

Full range –31 31 –35 35

25°C 50 83 50 83

Full range 88 88

IZ= 10 mA 25°C ±30 ±30

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±20 ±20

Full range ±100 ±100

IZ= 100 μA 25°C ±20 ±20

25°C 0.5 0.9 0.5 0.9

Full range 1.2 1.2

25°C 3 7 3 7

Full range 10 10

25°C 0.5 1 0.5 1 Ω

25°C 80 80 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

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6.15 LM4040C41I, LM4040D41I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040C41I LM4040D41I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 4.096 4.096 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –20 20 –41 41

Full range –47 47 –81 81

25°C 50 83 50 83

Full range 88 88

IZ= 10 mA 25°C ±30 ±30

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±20 ±20

Full range ±100 ±150

IZ= 100 μA 25°C ±20 ±20

25°C 0.5 0.9 0.5 1.2

Full range 1.2 1.5

25°C 3 7 3 9

Full range 10 13

25°C 0.5 1 0.5 1.3 Ω

25°C 80 80 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

16

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6.16 LM4040A50I, LM4040B50I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040A50I LM4040B50I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 5 5 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –5 5 –10 10

Full range –38 38 –43 43

25°C 65 89 65 89

Full range 95 95

IZ= 10 mA 25°C ±30 ±30

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±20 ±20

Full range ±100 ±100

IZ= 100 μA 25°C ±20 ±20

25°C 0.5 1 0.5 1

Full range 1.4 1.4

25°C 3.5 8 3.5 8

Full range 12 12

25°C 0.5 1.1 0.5 1.1 Ω

25°C 80 80 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

Product Folder Links: LM4040A LM4040B LM4040C LM4040D

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17

DV

Z

DI

Z

LM4040A,LM4040B
LM4040C,LM4040D

SLOS456N –JANUARY 2005–REVISED OCTOBER 2017

www.ti.com

6.17 LM4040C50I, LM4040D50I Electrical Characteristics

at industrial temperature range, full-range TA= –40°C to 85°C (unless otherwise noted)

LM4040C50I LM4040D50I

MIN TYP MAX MIN TYP MAX

120 120 ppm

UNIT

mV

μA

ppm/°CIZ= 1 mA

mV

RMS

V

Z

ΔV

I

Z,min

PARAMETER TEST CONDITIONS T

Reverse breakdown voltage IZ= 100 μA 25°C 5 5 V
Reverse breakdown voltage

Z

tolerance

IZ= 100 μA

Minimum cathode current

A

25°C –25 25 –50 50

Full range –58 58 –99 99

25°C 65 89 65 89

Full range 95 95

IZ= 10 mA 25°C ±30 ±30

α

of reverse breakdown voltage

VZ

(1)

Average temperature coefficient

25°C ±20 ±20

Full range ±100 ±150

IZ= 100 μA 25°C ±20 ±20

25°C 0.5 1 0.5 1.3

Full range 1.4 1.8

25°C 3.5 8 3.5 10

Full range 12 15

25°C 0.5 1.1 0.5 1.5 Ω

25°C 80 80 μV

Z

e

V

Reverse breakdown voltage
change with cathode current
change

Reverse dynamic impedance

Z

Wideband noise

N

Long-term stability of reverse
breakdown voltage

Thermal hysteresis

HYST

I

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

IZ= 1 mA, f = 120 Hz,
IAC= 0.1 I

Z

IZ= 100 μA,
10 Hz ≤ f ≤ 10 kHz

t = 1000 h,
TA= 25°C ± 0.1°C,
IZ= 100 μA

(2)

ΔTA= –40°C to 125°C 0.08% 0.08% —

(1) The overtemperature limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse Breakdown Voltage

Tolerance ±[(ΔVR/ΔT)(maxΔT)(VR)]. Where, ΔVR/ΔT is the VRtemperature coefficient, maxΔT is the maximum difference in temperature
from the reference point of 25°C to T
different grades in the industrial temperature range where maxΔT = 65°C is shown below:

MIN

or T

, and VRis the reverse breakdown voltage. The total overtemperature tolerance for the

MAX

A-grade: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
The total overtemperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040 has an overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75%
= ±19 mV.

(2) 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.

18

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