Texas Instruments REF3012, REF3020, REF3025, REF3030, REF3033 Schematic [ru]

REF3012

REF3020

REF3025

REF3030

REF3033

REF3040

SBVS032E – MARCH 2002 – REVISED MARCH 2004

50ppm/° C Max, 50 A in SOT23-3

CMOS VOLTAGE REFERENCE

FEATURES

●MicroSIZE PACKAGE: SOT23-3

●LOW DROPOUT: 1mV

●HIGH OUTPUT CURRENT: 25mA

●HIGH ACCURACY: 0.2%

●LOW IQ: 50 A max

●EXCELLENT SPECIFIED DRIFT PERFORMANCE:

50ppm/° C (max) from 0° C to +70° C 75ppm/° C (max) from –40C° to +125° C

APPLICATIONS

●PORTABLE, BATTERY-POWERED EQUIPMENT

●DATA ACQUISITION SYSTEMS

●MEDICAL EQUIPMENT

●HAND-HELD TEST EQUIPMENT

		REF3012
IN	1
		REF3020
		REF3025
		REF3030	3	GND
		REF3033
OUT	2	REF3040
		SOT23-3

DESCRIPTION

The REF30xx is a precision, low power, low voltage dropout voltage reference family available in a tiny SOT23-3.

The REF30xx small size and low power consumption (50 A max) make it ideal for portable and battery-powered applications. The REF30xx does not require a load capacitor, but is stable with any capacitive load.

Unloaded, the REF30xx can be operated with supplies within 1mV of output voltage. All models are specified for the wide temperature range, –40° C to +125° C.

PRODUCT	VOLTAGE (V)
REF3012	1.25
REF3020	2.048
REF3025	2.5
REF3030	3.0
REF3033	3.3
REF3040	4.096

DROPOUT VOLTAGE vs LOAD CURRENT

	350
(mV)	300
	250
Voltage
	200
Dropout	150
	100
	50
	0
	0		5		10		15		20		25		30
						Load Current (mA)

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.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.	Copyright © 2002-2004, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
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ABSOLUTE MAXIMUM RATINGS(1)

...................................................................Supply Voltage, V+ to V–	7.0V
Output Short-Circuit(2) ..............................................................	Continuous
Operating Temperature ..................................................	–40° C to +125° C
Storage Temperature .....................................................	–65° C to +150° C
Junction Temperature ....................................................................	+150° C
Lead Temperature (soldering, 10s) ...............................................	+300° C

NOTES: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these, or any other conditions beyond those specified, is not implied.

(2) Short circuit to ground.

PACKAGE/ORDERING INFORMATION(1)

ELECTROSTATIC DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

			SPECIFIED
		PACKAGE	TEMPERATURE	PACKAGE	ORDERING	TRANSPORT
PRODUCT	PACKAGE-LEAD	DESIGNATOR	RANGE	MARKING	NUMBER	MEDIA, QUANTITY
REF3012	SO T23-3	DBZ	–40° C to +125° C	R30A	REF3012AIDBZT	Tape and Reel, 250
"	"	"	"	"	REF3012AIDBZR	Tape and Reel, 3000
REF3020	SOT23-3	DBZ	–40° C to +125° C	R30B	REF3020AIDBZT	Tape and Reel, 250
"	"	"	"	"	REF3020AIDBZR	Tape and Reel, 3000
REF3025	SOT23-3	DBZ	–40° C to +125° C	R30C	REF3025AIDBZT	Tape and Reel, 250
"	"	"	"	"	REF3025AIDBZR	Tape and Reel, 3000
REF3030	SOT23-3	DBZ	–40° C to +125° C	R30F	REF3030AIDBZRT	Tape and Reel, 250
"	"	"	"	"	REF3030AIDBZR	Tape and Reel, 3000
REF3033	SOT23-3	DBZ	–40° C to +125° C	R30D	REF3033AIDBZT	Tape and Reel, 250
"	"	"	"	"	REF3033AIDBZR	Tape and Reel, 3000
REF3040	SOT23-3	DBZ	–40° C to +125° C	R30E	REF3040AIDBZT	Tape and Reel, 250
"	"	"	"	"	REF3040AIDBZR	Tape and Reel, 3000

NOTES: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.

ELECTRICAL CHARACTERISTICS

Boldface limits apply over the specified temperature range, TA = –40° C to +125° C.

At TA = +25° C, ILOAD = 0mA, VIN = 5V, unless otherwise noted.

			REF30xx
PARAMETER	CONDITIONS	MIN	TYP	MAX	UNITS

REF3012(1) - 1.25V

OUTPUT VOLTAGE	VOUT		1.2475	1.25	1.2525	V
Initial Accuracy					0.2	%
NOISE
Output Voltage Noise		f = 0.1Hz to 10Hz		14		Vp-p
Voltage Noise		f = 10Hz to 10kHz		42		Vrms
LINE REGULATION		1.8V ≤ VIN ≤ 5.5V		60	190	V/V
		REF3020 –2.048
OUTPUT VOLTAGE	VOUT		2.044	2.048	2.052	V
Initial Accuracy					0.2	%
NOISE
Output Voltage Noise		f = 0.1Hz to 10Hz		23		Vp-p
Voltage Noise		f = 10Hz to 10kHz		65		Vrms
LINE REGULATION		VREF + 50mV ≤ VIN ≤ 5.5V		110	290	V/V
		REF3025 –2.5V
OUTPUT VOLTAGE	VOUT		2.495	2.50	2.505	V
Initial Accuracy					0.2	%
NOISE
Output Voltage Noise		f = 0.1Hz to 10Hz		28		Vp-p
Voltage Noise		f = 10Hz to 10kHz		80		Vrms
LINE REGULATION		VREF + 50mV ≤ VIN ≤ 5.5V		120	325	V/V

2	REF3012, 3020, 3025, 3030, 3033, 3040

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SBVS032E

ELECTRICAL CHARACTERISTICS

Boldface limits apply over the specified temperature range, TA = –40° C to +125° C.

At TA = +25° C, ILOAD = 0mA, VIN = 5V, unless otherwise noted.

			REF30xx
PARAMETER	CONDITIONS	MIN	TYP	MAX	UNITS

REF3030 –3.0V

OUTPUT VOLTAGE

VOUT

2.994

3.0

3.006

V

Initial Accuracy

0.2

%

NOISE

Output Voltage Noise

f = 0.1Hz to 10Hz

33

Vp-p

Voltage Noise

f = 10Hz to 10kHz

94

Vrms

LINE REGULATION

VREF + 50mV ≤

VIN ≤ 5.5V

120

375

V/V

REF3033 –3.3V

OUTPUT VOLTAGE

VOUT

3.294

3.30

3.306

V

Initial Accuracy

0.2

%

NOISE

Output Voltage Noise

f = 0.1Hz to 10Hz

36

Vp-p

Voltage Noise

f = 10Hz to 10kHz

105

Vrms

LINE REGULATION

VREF + 50mV ≤

VIN ≤ 5.5V

130

400

V/V

REF3040 –4.096V

OUTPUT VOLTAGE

VOUT

4.088

4.096

4.104

V

Initial Accuracy

0.2

%

NOISE

Output Voltage Noise

f = 0.1Hz to 10Hz

45

Vp-p

Voltage Noise

f = 10Hz to 10kHz

128

Vrms

LINE REGULATION

VREF + 50mV ≤

VIN ≤ 5.5V

160

410

V/V

REF3012, REF3020, REF3025, REF3030, REF3033, REF3040

OUTPUT VOLTAGE TEMP DRIFT(2)

dV

/dT

OUT

0° C ≤

TA ≤

+70°C

20

50

ppm/°C

–30°C ≤

TA

≤

+85°C

28

60

ppm/°C

–40°C ≤

TA

≤

+85°C

30

65

ppm/°C

–40° C ≤

TA ≤

+125° C

35

75

ppm/°C

LONG-TERM STABILITY

0-1000h

24

ppm

1000-2000h

15

ppm

LOAD REGULATION(3)

dV

OUT

/dI

LOAD

0mA < I

LOAD

< 25mA,

3

100

V/mA

V

= V

REF

+ 500mV(1)

IN

THERMAL HYSTERESIS(4)

dT

25

100

ppm

DROPOUT VOLTAGE

VIN – VOUT

1

50

mV

SHORT-CIRCUIT CURRENT

ISC

45

mA

TURN ON SETTLING TIME

to 0.1% at VIN = 5V with CL = 0

120

s

POWER SUPPLY

Voltage

V

S

I

L

= 0

V

REF

+ 0.001(5)

5.5

V

Over Temperature

–40° C ≤

TA ≤

+125° C

VREF + 0.05

5.5

V

Quiescent Current

IQ

42

50

A

Over Temperature

–40° C ≤

TA ≤

+125° C

59

A

TEMPERATURE RANGE

Specified Range

–40

+125

° C

Operating Range

–40

+125

° C

Storage Range

–65

+150

° C

Thermal Resistance

SOT23-3 Surface-Mount

θ JC

110

° C/W

θ JA

336

° C/W

NOTES: (1) Minimum supply voltage for REF3012 is 1.8V.

(2)Box Method used to determine over temperature drift.

(3)Typical value of load regulation reflects measurements using a force and sense contacts, see text Load Regulation.

(4)Thermal hysteresis procedure is explained in more detail in Applications Information section of data sheet.

(5)For IL > 0, see Typical Characteristic curves.

REF3012, 3020, 3025, 3030, 3033, 3040	3

SBVS032E

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TYPICAL CHARACTERISTICS

At TA = +25° C, VIN = +5V power supply, REF3025 is used for typical characteristics, unless otherwise noted.

TEMPERATURE DRIFT (0° C to +70° C)

		50
		45
		40
	Units	35
		30
	of	25
	Number
		20
		15
		10
		5
		0

5	10	15	20	25	30	35	40	45	50	55	60	65
					Drift (ppm/° C)

OUTPUT VOLTAGE vs TEMPERATURE

		2.502
		2.500
	(V)	2.498
	Voltage
		2.496
	Output
		2.494
		2.492
		2.490

–40	–20	0	20	40	60	80	100	120	140
			Temperature (° C)

LOAD REGULATION vs TEMPERATURE

		6
	V/mA)	5
		4
	(
	Regulation	3
	Load	2
		1
		0

–40	–20	0	20	40	60	80	100	120	140
			Temperature (° C)

TEMPERATURE DRIFT (–40° C to +125° C)

		100
		90
		80
	Units	70
		60
	of	50
	Number
		40
		30
		20
		10
		0

5	10	15	20	25	30	35	40	45	50	55	60	65
					Drift (ppm/° C)

MAXIMUM LOAD CURRENT vs TEMPERATURE

	35
(mA)	30
Current	25
Load	20
Maximum	10
	15
	5

–40	–20	0	20	40	60	80	100	120	140
			Temperature (° C)

QUIESCENT CURRENT vs TEMPERATURE

	60
	50
	40
( A)	30
Q
I
	20
	10
	0

–40	–20	0	20	40	60	80	100	120	140
			Temperature (° C)

4	REF3012, 3020, 3025, 3030, 3033, 3040

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SBVS032E

TYPICAL CHARACTERISTICS (Cont.)

At TA

Line Regulation ( V/V)

PSRR (dB)

= +25° C, VIN = +5V power supply, REF3025 is used for typical characteristics, unless otherwise noted.

				LINE REGULATION vs TEMPERATURE																						OUTPUT IMPEDANCE vs FREQUENCY
200																				100
150																			(dB)	10
100																			Impedance
																				1
50																			Output
																				0.1
0
–50																				0.01
–40		–20		0		20		40		60		80		100		120		140		1						10								100									1k								10k							100k
							Temperature (° C)																												Frequency (Hz)

		POWER-SUPPLY REJECTION RATIO vs FREQUENCY																																												OUTPUT VOLTAGE vs SUPPLY VOLTAGE (No Load)
90																																												2.500010
80																																												2.500000
70																																											(V)	2.499990
60																																												2.499980
50																																											Voltage	2.499970
40																																											Output	2.499960
30																																												2.499950
20																																												2.499940
10																																												2.499930
0																																												2.499920
1		10														100								1k								10k							100k					2.5		3		3.5		4		4.5		5		5.5		6
																Frequency (Hz)																																		Supply (V)

Output Voltage (V)

OUTPUT VOLTAGE

vs SUPPLY VOLTAGE (ILOAD = 25mA)

2.500200

2.500100

2.500000

2.499900

2.499800

2.499700

2.499600

2.499500

2.499400

2.499300

2.5

3

3.5

4

4.5

5

5.5

6

Supply (V)

Output Voltage (V)

OUTPUT VOLTAGE vs LOAD CURRENT

2.500010

2.500000

2.499990

2.499980

2.499970

2.499960

2.499950

2.499940

2.499930

0	5	10	15	20	25	30
		Load Current (mA)

REF3012, 3020, 3025, 3030, 3033, 3040	5

SBVS032E

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TYPICAL CHARACTERISTICS (Cont.)

At TA = +25° C, VIN = +5V power supply, REF3025 is used for typical characteristics, unless otherwise noted.

3V/div

1V/div

50mV/div 500mV/div

20mV/div

STEP RESPONSE, CL = 0, 3V STARTUP

VIN

VOUT

40 s/div

LINE TRANSIENT RESPONSE

VIN

VOUT

10 s/div

0-5mA LOAD TRANSIENT (CL = 0)

IL = 5mA

IL = 0mA

VOUT

5V/div

1V/div

20mV/div

20mV/div

STEP RESPONSE, CL = 0, 5V STARTUP

VIN

VOUT

10 s/div

0-1mA LOAD TRANSIENT (CL = 0)

IL = 1mA

IL = 0mA

VOUT

10 s/div

1-6mA LOAD TRANSIENT (CL =1 F)

IL = 6mA

IL = 0mA

VOUT

10 s/div

40 s/div

6	REF3012, 3020, 3025, 3030, 3033, 3040

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SBVS032E