TEXAS INSTRUMENTS LM4040 Technical data

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* Pin 3 must be connected to ANODE or left open.

DBZ (SOT-23) PACKAGE

(TOP VIEW)

CATHODE

ANODE

DCK (SC-70) PACKAGE

(TOP VIEW)

ANODE

CATHODE

1 2* 3

NC – No internal connection * Pin 2 must be connected to ANODE or left open.

CATHODE

ANODE

LP (TO-92/TO-226) PACKAGE

(TOP VIEW)

NC – No internal connectionNC – No internal connection

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

FEATURES

• Fixed Output Voltages of 2.048 V, 2.5 V,

4.096 V, 5 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 µ V

• Wide Operating Current Range … 45 µ A Typ to

15 mA

• Stable With All Capacitive Loads; No Output

Capacitor Required

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

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

Typ

RMS

LM4040

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

DESCRIPTION/ORDERING INFORMATION

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 resistors or 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-to-performance ratio for their applications.

Packaged in space-saving SC-70 and SOT-23-3 packages and requiring a minimum current of 45 µ A (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.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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LM4040 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

ORDERING INFORMATION

–40 ° C to 85 ° C and 4.096 V Reel of 250 LM4040A41IDBZT

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

(2) DBZ/DCK: The actual top-side marking has one additional character that designates the assembly/test site.

DEVICE ORDERABLE TOP-SIDE GRADE PART NUMBER MARKING

A grade:

0.1% initial accuracy

100 ppm/ ° C temperature

coefficient

SC-70 (DCK) Reel of 3000 LM4040A20IDCKR MS_

2.048 V Reel of 250 LM4040A20IDBZT

2.5 V Reel of 250 LM4040A25IDBZT

10 V Reel of 250 LM4040A10IDBZT

SOT-23-3 (DBZ) 4MC_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040A25IDCKR P2_

SOT-23-3 (DBZ) 4NG_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040A41IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040A50IDCKR N5_

SOT-23-3 (DBZ) 4NA_

5 V Reel of 250 LM4040A50IDBZT

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040A10IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

PACKAGE

(1)

Reel of 3000 LM4040A20IDBZR

Bulk of 1000 LM4040A20ILP Reel of 2000 LM4040A20ILPR

Reel of 3000 LM4040A25IDBZR

Bulk of 1000 LM4040A25ILP Reel of 2000 LM4040A25ILPR

Reel of 3000 LM4040A41IDBZR

Bulk of 1000 LM4040A41ILP Reel of 2000 LM4040A41ILPR

Reel of 3000 LM4040A50IDBZR

Bulk of 1000 LM4040A50ILP Reel of 2000 LM4040A50ILPR

Reel of 3000 LM4040A10IDBZR

Bulk of 1000 LM4040A10ILP Reel of 2000 LM4040A10ILPR

(2)

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PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

ORDERING INFORMATION (continued)

–40 ° C to 85 ° C and 4.096 V Reel of 250 LM4040B41IDBZT

DEVICE ORDERABLE TOP-SIDE GRADE PART NUMBER MARKING

B grade:

0.2% initial accuracy

100 ppm/ ° C temperature

coefficient

SC-70 (DCK) Reel of 3000 LM4040B20IDCKR MT_

2.048 V Reel of 250 LM4040B20IDBZT

2.5 V Reel of 250 LM4040B25IDBZT

10 V Reel of 250 LM4040B10IDBZT

SOT-23-3 (DBZ) 4MD_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040B25IDCKR P3_

SOT-23-3 (DBZ) 4NH_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040B41IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040B50IDCKR MX_

SOT-23-3 (DBZ) 4NB_

5 V Reel of 250 LM4040B50IDBZT

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040B10IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

PACKAGE

(1)

Reel of 3000 LM4040B20IDBZR

Bulk of 1000 LM4040B20ILP Reel of 2000 LM4040B20ILPR

Reel of 3000 LM4040B25IDBZR

Bulk of 1000 LM4040B25ILP Reel of 2000 LM4040B25ILPR

Reel of 3000 LM4040B41IDBZR

Bulk of 1000 LM4040B41ILP Reel of 2000 LM4040B41ILPR

Reel of 3000 LM4040B50IDBZR

Bulk of 1000 LM4040B50ILP Reel of 2000 LM4040B50ILPR

Reel of 3000 LM4040B10IDBZR

Bulk of 1000 LM4040B10ILP Reel of 2000 LM4040B10ILPR

LM4040

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

(2)

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LM4040 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

ORDERING INFORMATION (continued)

–40 ° C to 85 ° C and 4.096 V Reel of 250 LM4040C41IDBZT

DEVICE ORDERABLE TOP-SIDE GRADE PART NUMBER MARKING

C grade:

0.5% initial accuracy

100 ppm/ ° C temperature

coefficient

SC-70 (DCK) Reel of 3000 LM4040C20IDCKR MV_

2.048 V Reel of 250 LM4040C20IDBZT

2.5 V Reel of 250 LM4040C25IDBZT

10 V Reel of 250 LM4040C10IDBZT

SOT-23-3 (DBZ) 4MQ_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040C25IDCKR M4_

SOT-23-3 (DBZ) 4MU_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040C41IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040C50IDCKR MZ_

SOT-23-3 (DBZ) 4NC_

5 V Reel of 250 LM4040C50IDBZT

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040C10IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

PACKAGE

(1)

Reel of 3000 LM4040C20IDBZR

Bulk of 1000 LM4040C20ILP Reel of 2000 LM4040C20ILPR

Reel of 3000 LM4040C25IDBZR

Bulk of 1000 LM4040C25ILP Reel of 2000 LM4040C25ILPR

Reel of 3000 LM4040C41IDBZR

Bulk of 1000 LM4040C41ILP Reel of 2000 LM4040C41ILPR

Reel of 3000 LM4040C50IDBZR

Bulk of 1000 LM4040C50ILP Reel of 2000 LM4040C50ILPR

Reel of 3000 LM4040C10IDBZR

Bulk of 1000 LM4040C10ILP Reel of 2000 LM4040C10ILPR

(2)

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–40 ° C to 85 ° C and

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

ORDERING INFORMATION (continued)

DEVICE ORDERABLE TOP-SIDE GRADE PART NUMBER MARKING

D grade:

1.0% initial accuracy

150 ppm/ ° C temperature

coefficient

SC-70 (DCK) Reel of 3000 LM4040D20IDCKR MW_

2.048 V Reel of 250 LM4040D20IDBZT

2.5 V Reel of 250 LM4040D25IDBZT

4.096 V Reel of 250 LM4040D41IDBZT

SOT-23-3 (DBZ) 4MV_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040D25IDCKR ME_

SOT-23-3 (DBZ) 4ME_

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040D41IDCKR PREVIEW

SOT-23-3 (DBZ) PREVIEW

TO-92/TO-226 (LP) PREVIEW

SC-70 (DCK) Reel of 3000 LM4040D50IDCKR M4_

SOT-23-3 (DBZ) 4ND_

5 V Reel of 250 LM4040D50IDBZT

TO-92/TO-226 (LP) PREVIEW

PACKAGE

(1)

Reel of 3000 LM4040D20IDBZR

Bulk of 1000 LM4040D20ILP Reel of 2000 LM4040D20ILPR

Reel of 3000 LM4040D25IDBZR

Bulk of 1000 LM4040D25ILP Reel of 2000 LM4040D25ILPR

Reel of 3000 LM4040D41IDBZR

Bulk of 1000 LM4040D41ILP Reel of 2000 LM4040D41ILPR

Reel of 3000 LM4040D50IDBZR

Bulk of 1000 LM4040D50ILP Reel of 2000 LM4040D50ILPR

LM4040

(2)

www.ti.com

LM4040 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

–40 ° C to 125 ° C

DEVICE ORDERABLE TOP-SIDE GRADE PART NUMBER MARKING

C grade:

0.5% initial accuracy

and 2.5 V SOT-23-3 (DBZ) 4MA_ 100 ppm/ ° C temperature

coefficient

D grade:

1.0% initial accuracy

and 2.5 V SOT-23-3 (DBZ) 4MB_ 150 ppm/ ° C temperature

coefficient

2.048 V 4MW_

5 V 4NE_

2.048 V 4MY_

5 V 4NF_

ORDERING INFORMATION (continued)

PACKAGE

(1)

Reel of 3000 LM4040C20QDBZR Reel of 250 LM4040C20QDBZT Reel of 3000 LM4040C25QDBZR Reel of 250 LM4040C25QDBZT Reel of 3000 LM4040C50QDBZR Reel of 250 LM4040C50QDBZT Reel of 3000 LM4040D20QDBZR Reel of 250 LM4040D20QDBZT Reel of 3000 LM4040D25QDBZR Reel of 250 LM4040D25QDBZT Reel of 3000 LM4040D50QDBZR Reel of 250 LM4040D50QDBZT

(2)

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CATHODE

ANODE

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

FUNCTIONAL BLOCK DIAGRAM

LM4040

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

Absolute Maximum Ratings

(1)

over free-air temperature range (unless otherwise noted)

MIN MAX UNIT

stg

(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

(2) Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient (3) The package thermal impedance is calculated in accordance with JESD 51-7.

Continuous cathode current –10 25 mA

DBZ package 206

Package thermal impedance

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

temperature is PD= (TJ(max) – TA)/ θJA. Operating at the absolute maximum TJof 150 ° C can affect reliability.

(2) (3)

DCK package 252 ° C/W LP package 156

Recommended Operating Conditions

Cathode current

Free-air temperature ° C

(1) See parametric tables

LM4040xxxI –40 85 LM4040xxxQ –40 125

MIN MAX UNIT

(1)

12 mA

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V

I

LM4040 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

LM4040x20I Electrical Characteristics

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

PARAMETER TEST CONDITIONS T

∆ V

Reverse breakdown voltage IZ= 100 µ A 25 ° C 2.048 2.048 V

Reverse breakdown voltage

tolerance

Minimum cathode current µ A

Z,min

Average temperature coefficient

of reverse breakdown voltage

Reverse breakdown voltage change with cathode current mV change

Reverse dynamic impedance 25 ° C 0.3 0.8 0.3 0.8 Ω

Wideband noise 25 ° C 35 35 µ V

Long-term stability of reverse breakdown voltage

Thermal hysteresis

HYST

(1)

(1) Thermal hysteresis is defined as V

IZ= 100 µ A mV

IZ= 10 mA 25 ° C ± 20 ± 20

IZ= 1 mA ppm/ ° C

IZ= 100 µ A 25 ° C ± 15 ± 15

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

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

IZ= 100 µ A, 10 Hz ≤ f ≤ 10 kHz

t = 1000 h, TA= 25 ° C ± 0.1 ° C, 120 120 ppm IZ= 100 µ A

∆ TA= –40 ° C to 125 ° C 0.08 0.08 %

(after cycling to –40 ° C) – V

Z,25 ° C

25 ° C –2 2 –4.1 4.1

Full range –15 15 –17 17

25 ° C 45 75 45 75

Full range 80 80

25 ° C ± 15 ± 15

Full range ± 100 ± 100

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

(after cycling to 125 ° C).

Z,25 ° C

LM4040A20I LM4040B20I

MIN TYP MAX MIN TYP MAX

UNIT

RMS

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V

I

PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

LM4040x20I Electrical Characteristics

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

PARAMETER TEST CONDITIONS T

∆ V

Reverse breakdown voltage IZ= 100 µ A 25 ° C 2.048 2.048 V

Reverse breakdown voltage

tolerance

Minimum cathode current µ A

Z,min

Average temperature coefficient

of reverse breakdown voltage

Reverse breakdown voltage change with cathode current mV change

Reverse dynamic impedance 25 ° C 0.3 0.9 0.3 1.1 Ω

Wideband noise 25 ° C 35 35 µ V

Long-term stability of reverse breakdown voltage

Thermal hysteresis

HYST

(1)

(1) Thermal hysteresis is defined as V

IZ= 100 µ A mV

IZ= 10 mA 25 ° C ± 20 ± 20

IZ= 1 mA ppm/ ° C

IZ= 100 µ A 25 ° C ± 15 ± 15

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

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

IZ= 100 µ A, 10 Hz ≤ f ≤ 10 kHz

t = 1000 h, TA= 25 ° C ± 0.1 ° C, 120 120 ppm IZ= 100 µ A

∆ TA= –40 ° C to 125 ° C 0.08 0.08 %

(after cycling to –40 ° C) – V

Z,25 ° C

25 ° C –10 10 –20 20

Full range –23 23 –40 40

25 ° C 45 75 45 75

Full range 80 80

25 ° C ± 15 ± 15

Full range ± 100 ± 150

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

(after cycling to 125 ° C).

Z,25 ° C

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

LM4040C20I LM4040D20I

MIN TYP MAX MIN TYP MAX

LM4040

UNIT

RMS

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I

LM4040 PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE

SLOS456G – JANUARY 2005 – REVISED SEPTEMBER 2005

LM4040x20Q Electrical Characteristics

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

PARAMETER TEST CONDITIONS T

∆ V

Reverse breakdown voltage IZ= 100 µ A 25 ° C 2.048 2.048 V

Reverse breakdown voltage

tolerance

Minimum cathode current µ A

Z,min

Average temperature coefficient

of reverse breakdown voltage

Reverse breakdown voltage change with cathode current mV change

Reverse dynamic impedance 25 ° C 0.3 0.9 0.3 1.1 Ω

Wideband noise 25 ° C 35 35 µ V

Long-term stability of reverse breakdown voltage

Thermal hysteresis

HYST

(1)

(1) Thermal hysteresis is defined as V

IZ= 100 µ A mV

IZ= 10 mA 25 ° C ± 20 ± 20

IZ= 1 mA ppm/ ° C

IZ= 100 µ A 25 ° C ± 15 ± 15

< IZ< 1 mA

Z,min

1 mA < IZ< 15 mA

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

IZ= 100 µ A, 10 Hz ≤ f ≤ 10 kHz

t = 1000 h, TA= 25 ° C ± 0.1 ° C, 120 120 ppm IZ= 100 µ A

∆ TA= –40 ° C to 125 ° C 0.08 0.08 %

(after cycling to –40 ° C) – V

Z,25 ° C

25 ° C –10 10 –20 20

Full range –30 30 –50 50

25 ° C 45 75 45 75

Full range 80 80

25 ° C ± 15 ± 15

Full range ± 100 ± 150

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

(after cycling to 125 ° C).

Z,25 ° C

LM4040C20Q LM4040D20Q

MIN TYP MAX MIN TYP MAX

UNIT

RMS

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