NSC LM4040EIM3-2.5, LM4040EEM3X-2.5, LM4040EEM3-2.5, LM4040DIZ-8.2, LM4040DIZ-4.1 Datasheet

September 1998

LM4040

Precision Micropower Shunt Voltage Reference

General Description

Ideal for space critical applications, the LM4040 precision voltage reference is available in the sub-miniature (3 mm x 1.3 mm) SOT-23 surface-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: 2.500V, 4.096V, 5.000V, 8.192V, and 10.000V. The minimum operating current increases from 60 µA for the LM4040-2.5 to 100 µA for the LM4040-10.0. All versions have a maximum operating current of 15 mA.

The LM4040 utilizes fuse and zener-zap reverse breakdown voltage trim during wafer sort to ensure that the prime parts have an accuracy of better than ±0.1% (A grade) at 25ÊC. Bandgap reference temperature drift curvature correction and low dynamic impedance ensure stable reverse breakdown voltage accuracy over a wide range of operating temperatures and currents.

Also available is the LM4041 with two reverse breakdown voltage versions: adjustable and 1.2V. Please see the LM4041 data sheet.

Features

nSmall packages: SOT-23, TO-92

nNo output capacitor required

nTolerates capacitive loads

nFixed reverse breakdown voltages of 2.500V, 4.096V, 5.000V, 8.192V, and 10.000V

Key Specifications (LM4040-2.5)

n Output voltage tolerance
(A grade, 25ÊC)	±0.1% (max)
n Low output noise
(10 Hz to 10 kHz)	35 µVrms(typ)
n Wide operating current range	60 µA to 15 mA
n Industrial temperature range	−40ÊC to +85ÊC
n Extended temperature range	−40ÊC to +125ÊC
n Low temperature coefficient	100 ppm/ÊC (max)

Applications

nPortable, Battery-Powered Equipment

nData Acquisition Systems

nInstrumentation

nProcess Control

nEnergy Management

nProduct Testing

nAutomotive

nPrecision Audio Components

Connection Diagrams

SOT-23

DS011323-1

*This pin must be left floating or connected to pin 2.

Top View

See NS Package Number M03B

(JEDEC Registration TO-236AB)

TO-92

DS011323-3

Bottom View

See NS Package Number Z03A

Reference Voltage Shunt Micropower Precision LM4040

© 1998 National Semiconductor Corporation

DS011323

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Ordering Information

Industrial Temperature Range (−40 ÊC to +85 ÊC)

Reverse Breakdown		Package
Voltage Tolerance at 25ÊC
and Average Reverse Breakdown	M3 (SOT-23)		Z (TO-92)
Voltage Temperature Coefficient
±0.1%, 100 ppm/ÊC max (A grade)	LM4040AIM3-2.5,		LM4040AIZ-2.5,
	LM4040AIM3-4.1,		LM4040AIZ-4.1,
	LM4040AIM3-5.0,		LM4040AIZ-5.0,
	LM4040AIM3-8.2,		LM4040AIZ-8.2,
	LM4040AIM3-10.0		LM4040AIZ-10.0
	See NS Package		See NS Package
	Number M03B		Number Z03A
±0.2%, 100 ppm/ÊC max (B grade)	LM4040BIM3-2.5,		LM4040BIZ-2.5,
	LM4040BIM3-4.1,		LM4040BIZ-4.1,
	LM4040BIM3-5.0,		LM4040BIZ-5.0,
	LM4040BIM3-8.2,		LM4040BIZ-8.2,
	LM4040BIM3-10.0		LM4040BIZ-10.0
	See NS Package		See NS Package
	Number M03B		Number Z03A
±0.5%, 100 ppm/ÊC max (C grade)	LM4040CIM3-2.5,		LM4040CIZ-2.5,
	LM4040CIM3-4.1,		LM4040CIZ-4.1,
	LM4040CIM3-5.0,		LM4040CIZ-5.0,
	LM4040CIM3-8.2,		LM4040CIZ-8.2,
	LM4040CIM3-10.0		LM4040CIZ-10.0
	See NS Package		See NS Package
	Number M03B		Number Z03A
±1.0%, 150 ppm/ÊC max (D grade)	LM4040DIM3-2.5,		LM4040DIZ-2.5,
	LM4040DIM3-4.1,		LM4040DIZ-4.1,
	LM4040DIM3-5.0,		LM4040DIZ-5.0,
	LM4040DIM3-8.2,		LM4040DIZ-10.0,
	LM4040DIM3-10.0
	See NS Package		See NS Package
	Number M03B		Number Z03A
±2.0%, 150 ppm/ÊC max (E grade)	LM4040EIM3-2.5		LM4040EIZ-2.5
	See NS Package		See NS Package
	Number M03B		Number Z03A

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Ordering Information (Continued)

Extended Temperature Range (−40 ÊC to +125 ÊC)

Reverse Breakdown	Package
Voltage Tolerance at 25 ÊC
	M3 (SOT-23)
and Average Reverse Breakdown	See NS Package
Voltage Temperature Coefficient	Number M03B
±0.5%, 100 ppm/ÊC max (C grade)	LM4040CEM3-2.5, LM4040CEM3-5.0
±1.0%, 150 ppm/ÊC max (D grade)	LM4040DEM3-2.5, LM4040DEM3-5.0
±2.0%, 150 ppm/ÊC max (E grade)	LM4040EEM3-2.5

SOT-23 Package Marking Information

Only three fields of marking are possible on the SOT-23's small surface. This table gives the meaning of the three fields.

Part Marking	Field Definition
R2A	First Field:
R4A	R = Reference
R5A	Second Field:
R8A	2 = 2.500V Voltage Option
R0A	4 = 4.096V Voltage Option
R2B	5 = 5.000V Voltage Option
R4B	8 = 8.192V Voltage Option
R5B	0 = 10.000V Voltage Option
R8B
R0B	Third Field:
	A±E = Initial Reverse Breakdown Voltage or Reference Voltage Tolerance
R2C
R4C	A = ±0.1%, B = ±0.2%, C = +0.5%, D = ±1.0%, E = ±2.0%
R5C
R8C
R0C
R2D
R4D
R5D
R8D
R0D
R2E

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

Reverse Current	20 mA
Forward Current	10 mA
Power Dissipation (TA = 25ÊC) (Note 2)
M3 Package	306 mW
Z Package	550 mW
Storage Temperature	−65ÊC to +150ÊC
Lead Temperature
M3 Package
Vapor phase (60 seconds)	+215ÊC
Infrared (15 seconds)	+220ÊC
Z Package
Soldering (10 seconds)	+260ÊC
ESD Susceptibility

Human Body Model (Note 3)	2 kV
Machine Model (Note 3)	200V

See AN-450 ªSurface Mounting Methods and Their Effect on Product Reliabilityº for other methods of soldering surface mount devices.

Operating Ratings(Notes 1, 2)

Temperature Range	(Tmin ≤ TA ≤ Tmax)
Industrial Temperature Range	−40ÊC	≤ TA ≤ +85ÊC
Extended Temperature Range	−40ÊC ≤ TA ≤ +125ÊC
Reverse Current
LM4040-2.5	60	µA to 15 mA
LM4040-4.1	68	µA to 15 mA
LM4040-5.0	74	µA to 15 mA
LM4040-8.2	91	µA to 15 mA
LM4040-10.0	100	µA to 15 mA

LM4040-2.5

Electrical Characteristics (Industrial Temperature Range)

Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25ÊC. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ±0.1% and ±0.2%, respectively.

				Typical	LM4040AIM3	LM4040BIM3	Units
Symbol		Parameter	Conditions	(Note 4)	LM4040AIZ	LM4040BIZ	(Limit)
					Limits	Limits
					(Note 5)	(Note 5)
VR		Reverse Breakdown	IR = 100 µA	2.500			V
		Voltage
		Reverse Breakdown	IR = 100 µA		±2.5	±5.0	mV (max)
		Voltage Tolerance (Note 6)			± 19	± 21	mV (max)
IRMIN		Minimum Operating Current		45			µA
					60	60	µA (max)
					65	65	µA (max)
VR/	T	Average Reverse	IR = 10 mA	±20			ppm/ÊC
		Breakdown Voltage	IR = 1 mA	±15	± 100	± 100	ppm/ÊC (max)
		Temperature Coefficient
			IR = 100 µA	±15			ppm/ÊC
		(Note 6)
VR/	IR	Reverse Breakdown	IRMIN ≤ IR ≤ 1 mA	0.3			mV
		Voltage Change with			0.8	0.8	mV (max)
		Operating Current Change			1.0	1.0	mV (max)
			1 mA ≤ IR ≤ 15 mA	2.5			mV
					6.0	6.0	mV (max)
					8.0	8.0	mV (max)
ZR		Reverse Dynamic	IR = 1 mA, f = 120 Hz,	0.3			Ω
		Impedance	IAC = 0.1 IR		0.8	0.8	Ω (max)
eN		Wideband Noise	IR = 100 µA	35			µV rms
			10 Hz ≤ f ≤ 10 kHz
VR		Reverse Breakdown	t = 1000 hrs
		Voltage Long Term Stability	T = 25ÊC ±0.1ÊC	120			ppm
			IR = 100 µA

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LM4040-2.5

Electrical Characteristics (Industrial Temperature Range)

	Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25ÊC. The grades C, D and E designate initial
	Reverse Breakdown Voltage tolerances of ±0.5%,				±1.0% and ±2.0%, respectively.
						Typical	LM4040CIM3		LM4040DIM3	LM4040EIZ	Units
Symbol			Parameter	Conditions		(Note 4)	LM4040CIZ		LM4040DIZ		(Limit)
							Limits		Limits	Limits
							(Note 5)		(Note 5)	(Note 5)
	VR		Reverse	IR = 100 µA		2.500					V
			Breakdown Voltage
			Reverse	IR = 100 µA			±12		±25	±50	mV (max)
			Breakdown Voltage				± 29		± 49	± 74	mV (max)
			Tolerance (Note 6)
	IRMIN		Minimum Operating			45					µA
			Current				60		65	65	µA (max)
							65		70	70	µA (max)
	VR/	T	Average Reverse	IR = 10 mA		±20					ppm/ÊC
			Breakdown Voltage	IR = 1 mA		±15	± 100		± 150	± 150	ppm/ÊC
			Temperature								(max)
			Coefficient(Note 6)	IR = 100 µA		±15					ppm/ÊC
	VR/	IR	Reverse	IRMIN ≤ IR ≤ 1 mA		0.4					mV
			Breakdown Voltage				0.8		1.0	1.0	mV (max)
			Change with				1.0		1.2	1.2	mV (max)
			Operating Current
				1 mA ≤ IR ≤ 15 mA		2.5					mV
			Change
							6.0		8.0	8.0	mV (max)
							8.0		10.0	10.0	mV (max)
	ZR		Reverse Dynamic	IR = 1 mA, f = 120 Hz		0.3					Ω
			Impedance	IAC = 0.1 IR			0.9		1.1	1.1	Ω(max)
	eN		Wideband Noise	IR = 100 µA		35					µV rms
				10 Hz ≤ f ≤ 10 kHz
	VR		Reverse	t = 1000 hrs
			Breakdown Voltage	T = 25ÊC ±0.1ÊC		120					ppm
			Long Term Stability	IR = 100 µA

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LM4040-2.5

Electrical Characteristics (Extended Temperature Range)

Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25ÊC. The grades C, D and E designate initial Reverse Breakdown Voltage tolerances of ±0.5

± ±

Symbol		Parameter	Conditions	Typical	LM4040CEM3	LM4040DEM3	LM4040EEM3	Units
					Limits	Limits	Limits	(Limit)
				(Note 4)	(Note 5)	(Note 5)	(Note 5)
VR		Reverse	IR = 100 µA	2.500				V
		Breakdown Voltage
		Reverse	IR = 100 µA		±12	±25	±50	mV (max)
		Breakdown Voltage			± 38	± 63	± 88	mV (max)
		Tolerance(Note 6)
IRMIN		Minimum Operating		45				µA
		Current			60	60	60	µA (max)
					68	73	73	µA (max)
VR/	T	Average Reverse	IR = 10 mA	±20				ppm/ÊC
		Breakdown Voltage	IR = 1 mA	±15	± 100	± 150	± 150	ppm/ÊC (max)
		Temperature
			IR = 100 µA	±15				ppm/ÊC
		Coefficient (Note 6)
VR/	IR	Reverse	IRMIN ≤ IR ≤ 1 mA	0.3				mV
		Breakdown Voltage			0.8	1.0	1.0	mV (max)
		Change with
		Operating Current			1.0	1.2	1.2	mV (max)
		Change
			1 mA ≤ IR ≤ 15 mA	2.5				mV
					6.0	8.0	8.0	mV (max)
					8.0	10.0	10.0	mV (max)
ZR		Reverse Dynamic	IR = 1 mA, f = 120	0.3				Ω
		Impedance	Hz, IAC = 0.1 IR		0.9	1.1	1.1	Ω (max)
eN		Wideband Noise	IR = 100 µA	35				µV rms
			10 Hz ≤ f ≤ 10 kHz
VR		Reverse	t = 1000 hrs
		Breakdown Voltage	T = 25ÊC ±0.1ÊC	120				ppm
		Long Term Stability	IR = 100 µA

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LM4040-4.1

Electrical Characteristics (Industrial Temperature Range)

Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25ÊC. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ±0.1% and ±0.2%, respectively.

					Typical	LM4040AIM3	LM4040BIM3	Units
	Symbol		Parameter	Conditions		LM4040AIZ	LM4040BIZ
					(Note 4)			(Limit)
						Limits	Limits
						(Note 5)	(Note 5)
	VR		Reverse Breakdown	IR = 100 µA	4.096			V
			Voltage
			Reverse Breakdown	IR = 100 µA		±4.1	±8.2	mV (max)
			Voltage Tolerance (Note 6)			± 31	± 35	mV (max)
	IRMIN		Minimum Operating Current		50			µA
						68	68	µA (max)
						73	73	µA (max)
	VR/	T	Average Reverse	IR = 10 mA	±30			ppm/ÊC
			Breakdown Voltage	IR = 1 mA	±20	± 100	± 100	ppm/ÊC (max)
			Temperature
				IR = 100 µA	±20			ppm/ÊC
			Coefficient(Note 6)
	VR/	IR	Reverse Breakdown	IRMIN ≤ IR ≤ 1 mA	0.5			mV
			Voltage Change with			0.9	0.9	mV (max)
			Operating Current Change			1.2	1.2	mV (max)
				1 mA ≤ IR ≤ 15 mA	3.0			mV
						7.0	7.0	mV (max)
						10.0	10.0	mV (max)
	ZR		Reverse Dynamic	IR = 1 mA, f = 120 Hz,	0.5			Ω
			Impedance	IAC = 0.1 IR		1.0	1.0	Ω (max)
	eN		Wideband Noise	IR = 100 µA	80			µV rms
				10 Hz ≤ f ≤ 10 kHz
	VR		Reverse Breakdown	t = 1000 hrs	120			ppm
			Voltage Long Term Stability	T = 25ÊC ±0.1ÊC
				IR = 100 µA

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LM4040-4.1

Electrical Characteristics (Industrial Temperature Range)

Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25ÊC. The grades C and D designate initial Reverse Breakdown Voltage tolerances of ±0.5% and ±1.0%, respectively.

					Typical	LM4040CIM3	LM4040DIM3	Units
	Symbol		Parameter	Conditions		LM4040CIZ	LM4040DIZ
					(Note 4)			(Limit)
						Limits	Limits
						(Note 5)	(Note 5)
	VR		Reverse Breakdown	IR = 100 µA	4.096			V
			Voltage
			Reverse Breakdown	IR = 100 µA		±20	±41	mV (max)
			Voltage Tolerance (Note 6)			± 47	± 81	mV (max)
	IRMIN		Minimum Operating Current		50			µA
						68	73	µA (max)
						73	78	µA (max)
	VR/	T	Average Reverse	IR = 10 mA	±30			ppm/ÊC
			Breakdown Voltage	IR = 1 mA	±20	± 100	± 150	ppm/ÊC (max)
			Temperature Coefficient
				IR = 100 µA	±20			ppm/ÊC
			(Note 6)
	VR/	IR	Reverse Breakdown	IRMIN ≤ IR ≤ 1 mA	0.5			mV
			Voltage Change with			0.9	1.2	mV (max)
			Operating Current Change			1.2	1.5	mV (max)
				1 mA ≤ IR ≤ 15 mA	3.0			mV
						7.0	9.0	mV (max)
						10.0	13.0	mV (max)
	ZR		Reverse Dynamic	IR = 1 mA, f = 120 Hz,	0.5			Ω
			Impedance	IAC = 0.1 IR		1.0	1.3	Ω (max)
	eN		Wideband Noise	IR = 100 µA	80			µV rms
				10 Hz ≤ f ≤ 10 kHz
	VR		Reverse Breakdown	t = 1000 hrs	120			ppm
			Voltage Long Term Stability	T = 25ÊC ±0.1ÊC
				IR = 100 µA

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