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

SBVS032E – MARCH 2002 – REVISED MARCH 2004

50ppm/°C Max, 50µA in SOT23-3

CMOS VOLTAGE REFERENCE

REF3012
REF3020
REF3025
REF3030
REF3033
REF3040

FEATURES

●

Micro

SIZE PACKAGE: SOT23-3

● LOW DROPOUT: 1mV

● HIGH OUTPUT CURRENT: 25mA

● HIGH ACCURACY: 0.2%

● LOW IQ: 50µA max

●

EXCELLENT SPECIFIED DRIFT PERFORMANCE:

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

APPLICATIONS

● PORTABLE, BATTERY-POWERED EQUIPMENT

● DATA ACQUISITION SYSTEMS

● MEDICAL EQUIPMENT

● HAND-HELD TEST EQUIPMENT

REF3012

1IN

REF3020

2OUT

REF3025
REF3030
REF3033
REF3040

SOT23-3

3 GND

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 (50µA
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

350

300

250

200

150

100

Dropout Voltage (mV)

50

DROPOUT VOLTAGE vs LOAD CURRENT

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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

0

0 5 10 15 20 25 30

Load Current (mA)

Copyright © 2002-2004, Texas Instruments Incorporated

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ABSOLUTE MAXIMUM RATINGS

Supply Voltage, V+ to V–................................................................... 7.0V

Output Short-Circuit

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.

(2)

.............................................................. Continuous

(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.

PACKAGE/ORDERING INFORMATION

PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA, QUANTITY

REF3012 SOT23-3 DBZ –40°C to +125°C R30A REF3012AIDBZT Tape and Reel, 250

(1)

SPECIFIED

PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT

" """"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, I

PARAMETER CONDITIONS MIN TYP MAX UNITS

OUTPUT VOLTAGE V

Initial Accuracy 0.2 %

NOISE

Output Voltage Noise f = 0.1Hz to 10Hz 14 µVp-p
Voltage Noise f = 10Hz to 10kHz 42 µVrms

LINE REGULATION 1.8V ≤ V

OUTPUT VOLTAGE V

Initial Accuracy 0.2 %

NOISE

Output Voltage Noise f = 0.1Hz to 10Hz 23 µVp-p
Voltage Noise f = 10Hz to 10kHz 65 µVrms

LINE REGULATION V

OUTPUT VOLTAGE V

Initial Accuracy 0.2 %

NOISE

Output Voltage Noise f = 0.1Hz to 10Hz 28 µVp-p
Voltage Noise f = 10Hz to 10kHz 80 µVrms

LINE REGULATION V

= 0mA, VIN = 5V, unless otherwise noted.

LOAD

OUT

OUT

OUT

REF30xx

REF3012

(1)

- 1.25V

1.2475 1.25 1.2525 V

≤ 5.5V 60 190 µV/V

IN

REF3020 – 2.048

2.044 2.048 2.052 V

+ 50mV ≤ VIN ≤ 5.5V 110 290 µV/V

REF

REF3025 – 2.5V

2.495 2.50 2.505 V

+ 50mV ≤ VIN ≤ 5.5V 120 325 µV/V

REF

2

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REF3012, 3020, 3025, 3030, 3033, 3040

SBVS032E

ELECTRICAL CHARACTERISTICS

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

At TA = +25°C, I

PARAMETER CONDITIONS MIN TYP MAX UNITS

OUTPUT VOLTAGE V

Initial Accuracy 0.2 %

NOISE

Output Voltage Noise f = 0.1Hz to 10Hz 33 µVp-p
Voltage Noise f = 10Hz to 10kHz 94 µVrms

LINE REGULATION V

OUTPUT VOLTAGE V

Initial Accuracy 0.2 %

NOISE

Output Voltage Noise f = 0.1Hz to 10Hz 36 µVp-p
Voltage Noise f = 10Hz to 10kHz 105 µVrms

LINE REGULATION V

OUTPUT VOLTAGE V

Initial Accuracy 0.2 %

NOISE

Output Voltage Noise f = 0.1Hz to 10Hz 45 µVp-p
Voltage Noise f = 10Hz to 10kHz 128 µVrms

LINE REGULATION V

OUTPUT VOLTAGE TEMP DRIFT

LONG-TERM STABILITY

LOAD REGULATION

THERMAL HYSTERESIS
DROPOUT VOLTAGE V
SHORT-CIRCUIT CURRENT I
TURN ON SETTLING TIME to 0.1% at V
POWER SUPPLY

Voltage V

Over Temperature –40

Quiescent Current I

Over Temperature –40
TEMPERATURE RANGE

Specified Range –40 +125 °C
Operating Range –40 +125 °C
Storage Range –65 +150 °C
Thermal Resistance
SOT23-3 Surface-Mount

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

= 0mA, VIN = 5V, unless otherwise noted.

LOAD

OUT

OUT

OUT

REF3012, REF3020, REF3025, REF3030, REF3033, REF3040

(2)

dV

/dT

OUT

(3)

> 0, see Typical Characteristic curves.

L

dV

/dI

OUT

LOAD

(4)

dT 25 100 ppm

– V

IN

OUT

SC

S

Q

θ

JC

θ

JA

REF30xx

REF3030 – 3.0V

2.994 3.0 3.006 V

+ 50mV ≤ VIN ≤ 5.5V 120 375 µV/V

REF

REF3033 – 3.3V

3.294 3.30 3.306 V

+ 50mV ≤ VIN ≤ 5.5V 130 400 µV/V

REF

REF3040 – 4.096V

4.088 4.096 4.104 V

+ 50mV ≤ VIN ≤ 5.5V 160 410 µV/V

REF

0

°C ≤ T

≤ +70°C 20 50 ppm/°C

A

–30
–40

–40

0mA < I

V

IN

°C ≤ T

≤ +85°C 28 60 ppm/°C

A

°C ≤ TA ≤ +85°C 30 65 ppm/°C

°C ≤ T

≤ +125°C 35 75 ppm/°C

A

0-1000h 24 ppm

1000-2000h 15 ppm

= V

LOAD

+ 500mV

REF

(1)

< 25mA, 3 100 µV/mA

150 mV

45 mA

= 5V with CL = 0 120 µs

IN

IL = 0

°C ≤ T

≤ +125°CV

A

°C ≤ T

≤ +125°C59µA

A

V

REF

(5)

+ 0.001

+ 0.05 5.5 V

REF

42 50 µA

5.5 V

110 °C/W
336 °C/W

Load Regulation

.

REF3012, 3020, 3025, 3030, 3033, 3040

SBVS032E

www.ti.com

3

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
35
30
25
20

Number of Units

15
10

5
0

51015202530 4035 45 50 55 6560

Drift (ppm/°C)

2.502

2.500

2.498

2.496

OUTPUT VOLTAGE vs TEMPERATURE

TEMPERATURE DRIFT (–40°C to +125°C)

100

90
80
70
60
50
40

Number of Units

30
20
10

0

51015202530 4035 45 50 55 6560

Drift (ppm/°C)

MAXIMUM LOAD CURRENT vs TEMPERATURE

35

30

25

20

2.494

Output Voltage (V)

2.492

2.490
–40 –20 0 20 6040 80 100 120 140

Temperature (°C)

6

5

4

3

2

Load Regulation (µV/mA)

1

0

–40 –20 0 20 6040 80 100 120 140

LOAD REGULATION vs TEMPERATURE

Temperature (°C)

15

10

Maximum Load Current (mA)

5

–40 –20 0 20 6040 80 100 120 140

Temperature (°C)

60

50

40

30

(µA)

Q

I

20

10

0

QUIESCENT CURRENT vs TEMPERATURE

–40 –20 0 20 6040 80 100 120 140

Temperature (°C)

4

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REF3012, 3020, 3025, 3030, 3033, 3040

SBVS032E

TYPICAL CHARACTERISTICS (Cont.)

OUTPUT IMPEDANCE vs FREQUENCY

100

10

1

0.1

0.01

Output Impedance (dB)

1 10 100 1k 10k 100k

Frequency (Hz)

OUTPUT VOLTAGE vs LOAD CURRENT

2.500010

2.500000

2.499990

2.499980

2.499970

2.499960

2.499950

2.499940

2.499930

Output Voltage (V)

0 5 10 15 20 25 30

Load Current (mA)

OUTPUT VOLTAGE vs SUPPLY VOLTAGE (No Load)

2.500010

2.500000

2.499990

2.499980

2.499970

2.499960

2.499950

2.499940

2.499930

2.499920

Output Voltage (V)

2.5 3 3.5 4 4.5 5 5.5 6
Supply (V)

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

200

150

100

50

Line Regulation (µV/V)

0

–50

–40 –20 0 20 6040 80 100 120 140

90
80
70
60
50
40

PSRR (dB)

30
20
10

0

1 10 100 1k 10k 100k

LINE REGULATION vs TEMPERATURE

Temperature (°C)

POWER-SUPPLY REJECTION RATIO vs FREQUENCY

Frequency (Hz)

OUTPUT VOLTAGE

2.500200

2.500100

2.500000

2.499900

2.499800

2.499700

2.499600

Output Voltage (V)

2.499500

2.499400

2.499300

2.5 3 3.5 4 4.5 5 5.5 6

REF3012, 3020, 3025, 3030, 3033, 3040

SBVS032E

vs SUPPLY VOLTAGE (I

Supply (V)

LOAD

= 25mA)

5

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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/div1V/div

500mV/div50mV/div

STEP RESPONSE, CL = 0, 3V STARTUP

V

IN

V

OUT

40µs/div

LINE TRANSIENT RESPONSE

V

IN

5V/div1V/div

STEP RESPONSE, CL = 0, 5V STARTUP

V

IN

V

OUT

10µs/div

0-1mA LOAD TRANSIENT (CL = 0)

IL = 1mA

IL = 0mA

V

OUT

IL = 5mA

V

OUT

20mV/div

10µs/div

0-5mA LOAD TRANSIENT (CL = 0)

IL = 0mA

10µs/div

V

OUT

20mV/div

IL = 6mA

V

OUT

20mV/div

10µs/div

1-6mA LOAD TRANSIENT (CL =1µF)

IL = 0mA

40µs/div

6

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REF3012, 3020, 3025, 3030, 3033, 3040

SBVS032E