REF3012
REF3020
REF3025
REF3030
REF3033
REF3040
SBVS032E – MARCH 2002 – REVISED MARCH 2004
50ppm/
°
C Max, 50
µ
A in SOT23-3
CMOS VOLTAGE REFERENCE
FEATURES
q
MicroSIZE
PACKAGE: SOT23-3
q
LOW DROPOUT: 1mV
q
HIGH OUTPUT CURRENT: 25mA
q
HIGH ACCURACY: 0.2%
q
LOW I
Q
: 50
µ
A max
q
EXCELLENT SPECIFIED DRIFT PERFORMANCE:
50ppm/
°
C (max) from 0
°
C to +70
°
C
75ppm/
°
C (max) from –40
°
C to +125
°
C
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 applica-
tions. 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.
APPLICATIONS
q
PORTABLE, BATTERY-POWERED EQUIPMENT
q
DATA ACQUISITION SYSTEMS
q
MEDICAL EQUIPMENT
q
HAND-HELD TEST EQUIPMENT
PRODUCT
REF3012
REF3020
REF3025
REF3030
REF3033
REF3040
VOLTAGE (V)
1.25
2.048
2.5
3.0
3.3
4.096
DROPOUT VOLTAGE vs LOAD CURRENT
350
IN
1
REF3012
REF3020
REF3025
REF3030
REF3033
REF3040
SOT23-3
300
Dropout Voltage (mV)
250
200
150
100
50
0
0
5
10
15
20
25
30
Load Current (mA)
3
GND
OUT
2
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.
Copyright © 2002-2004, Texas Instruments Incorporated
www.ti.com
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.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments 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
(1)
PACKAGE
DESIGNATOR
DBZ
SPECIFIED
TEMPERATURE
RANGE
–40°C to +125°C
PACKAGE
MARKING
R30A
ORDERING
NUMBER
REF3012AIDBZT
REF3012AIDBZR
REF3020AIDBZT
REF3020AIDBZR
REF3025AIDBZT
REF3025AIDBZR
REF3030AIDBZRT
REF3030AIDBZR
REF3033AIDBZT
REF3033AIDBZR
REF3040AIDBZT
REF3040AIDBZR
TRANSPORT
MEDIA, QUANTITY
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
PRODUCT
REF3012
PACKAGE-LEAD
SO T23-3
"
REF3020
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R30B
"
REF3025
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R30C
"
REF3030
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R30F
"
REF3033
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R30D
"
REF3040
"
SOT23-3
"
DBZ
"
–40°C to +125°C
"
R30E
"
"
"
"
"
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,
T
A
= –40
°
C to +125
°
C.
At T
A
= +25°C, I
LOAD
= 0mA, V
IN
= 5V, unless otherwise noted.
REF30xx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REF3012
(1)
- 1.25V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
LINE REGULATION
V
OUT
1.2475
1.25
1.2525
0.2
V
%
µVp-p
µVrms
190
µV/V
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
1.8V
≤
V
IN
≤
5.5V
14
42
60
REF3020 – 2.048
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
LINE REGULATION
V
OUT
2.044
2.048
2.052
0.2
V
%
µVp-p
µVrms
290
µV/V
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
REF
+ 50mV
≤
V
IN
≤
5.5V
23
65
110
REF3025 – 2.5V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
LINE REGULATION
V
OUT
2.495
2.50
2.505
0.2
V
%
µVp-p
µVrms
325
µV/V
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
REF
+ 50mV
≤
V
IN
≤
5.5V
28
80
120
2
REF3012, 3020, 3025, 3030, 3033, 3040
www.ti.com
SBVS032E
ELECTRICAL CHARACTERISTICS
Boldface
limits apply over the specified temperature range,
T
A
= –40
°
C to +125
°
C.
At T
A
= +25°C, I
LOAD
= 0mA, V
IN
= 5V, unless otherwise noted.
REF30xx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
REF3030 – 3.0V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
LINE REGULATION
V
OUT
2.994
3.0
3.006
0.2
V
%
µVp-p
µVrms
375
µV/V
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
REF
+ 50mV
≤
V
IN
≤
5.5V
33
94
120
REF3033 – 3.3V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
LINE REGULATION
V
OUT
3.294
3.30
3.306
0.2
V
%
µVp-p
µVrms
400
µV/V
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
REF
+ 50mV
≤
V
IN
≤
5.5V
36
105
130
REF3040 – 4.096V
OUTPUT VOLTAGE
Initial Accuracy
NOISE
Output Voltage Noise
Voltage Noise
LINE REGULATION
V
OUT
4.088
4.096
4.104
0.2
V
%
µVp-p
µVrms
410
µV/V
f = 0.1Hz to 10Hz
f = 10Hz to 10kHz
V
REF
+ 50mV
≤
V
IN
≤
5.5V
45
128
160
REF3012, REF3020, REF3025, REF3030, REF3033, REF3040
OUTPUT VOLTAGE TEMP DRIFT
(2)
dV
OUT
/dT
0
°
C
≤
T
A
≤
+70
°
C
–30
°
C
≤
T
A
≤
+85
°
C
–40
°
C
≤
T
A
≤
+85
°
C
–40
°
C
≤
T
A
≤
+125
°
C
0-1000h
1000-2000h
LOAD REGULATION
(3)
THERMAL HYSTERESIS
(4)
DROPOUT VOLTAGE
SHORT-CIRCUIT CURRENT
TURN ON SETTLING TIME
POWER SUPPLY
Voltage
Over Temperature
Quiescent Current
Over Temperature
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
SOT23-3 Surface-Mount
V
S
I
Q
–40
°
C
≤
T
A
≤
+125
°
C
–40
–40
–65
dV
OUT
/dI
LOAD
dT
V
IN
– V
OUT
I
SC
to 0.1% at V
IN
= 5V with C
L
= 0
I
L
= 0
–40
°
C
≤
T
A
≤
+125
°
C
V
REF
+ 0.001
(5)
V
REF
+ 0.05
42
0mA < I
LOAD
< 25mA,
V
IN
= V
REF
+ 500mV
(1)
20
28
30
35
24
15
3
25
1
45
120
5.5
5.5
50
59
+125
+125
+150
110
336
100
100
50
50
60
65
75
ppm/
°
C
ppm/
°
C
ppm/
°
C
ppm/
°
C
ppm
ppm
µV/mA
ppm
mV
mA
µs
V
V
µA
LONG-TERM STABILITY
µ
A
°C
°C
°C
°C/W
°C/W
θ
JC
θ
JA
NOTES: (1)
(2)
(3)
(4)
(5)
Minimum supply voltage for REF3012 is 1.8V.
Box Method used to determine over temperature drift.
Typical value of load regulation reflects measurements using a force and sense contacts, see text
Load Regulation.
Thermal hysteresis procedure is explained in more detail in Applications Information section of data sheet.
For I
L
> 0, see Typical Characteristic curves.
REF3012, 3020, 3025, 3030, 3033, 3040
SBVS032E
3
www.ti.com
TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
IN
= +5V power supply, REF3025 is used for typical characteristics, unless otherwise noted.
TEMPERATURE DRIFT (0°C to +70°C)
50
45
40
100
90
80
TEMPERATURE DRIFT (–40°C to +125°C)
Number of Units
Number of Units
35
30
25
20
15
10
5
0
5
10 15 20 25 30 35 40 45 50 55 60 65
Drift (ppm/°C)
70
60
50
40
30
20
10
0
5
10 15 20 25 30 35 40 45 50 55 60 65
Drift (ppm/°C)
OUTPUT VOLTAGE vs TEMPERATURE
2.502
Maximum Load Current (mA)
MAXIMUM LOAD CURRENT vs TEMPERATURE
35
30
25
20
15
10
5
2.500
Output Voltage (V)
2.498
2.496
2.494
2.492
2.490
–40
–20
0
20
40
60
80
100
120
140
Temperature (°C)
–40
–20
0
20
40
60
80
100
120
140
Temperature (°C)
LOAD REGULATION vs TEMPERATURE
6
5
4
3
2
1
0
–40
–20
0
20
40
60
80
100
120
140
Temperature (°C)
60
50
40
QUIESCENT CURRENT vs TEMPERATURE
Load Regulation (µV/mA)
I
Q
(µA)
30
20
10
0
–40
–20
0
20
40
60
80
100
120
140
Temperature (°C)
4
REF3012, 3020, 3025, 3030, 3033, 3040
www.ti.com
SBVS032E
TYPICAL CHARACTERISTICS
(Cont.)
At T
A
= +25°C, V
IN
= +5V power supply, REF3025 is used for typical characteristics, unless otherwise noted.
LINE REGULATION vs TEMPERATURE
200
100
OUTPUT IMPEDANCE vs FREQUENCY
Output Impedance (dB)
Line Regulation (µV/V)
150
10
100
1
50
0
0.1
–50
–40
–20
0
20
40
60
80
100
120
140
Temperature (°C)
0.01
1
10
100
1k
10k
100k
Frequency (Hz)
POWER-SUPPLY REJECTION RATIO vs FREQUENCY
90
80
70
OUTPUT VOLTAGE vs SUPPLY VOLTAGE (No Load)
2.500010
2.500000
2.499990
Output Voltage (V)
60
PSRR (dB)
50
40
30
20
10
0
1
10
100
1k
10k
100k
Frequency (Hz)
2.499980
2.499970
2.499960
2.499950
2.499940
2.499930
2.499920
2.5
3
3.5
4
4.5
5
5.5
6
Supply (V)
OUTPUT VOLTAGE
vs SUPPLY VOLTAGE (I
LOAD
= 25mA)
2.500200
2.500100
2.500000
Output Voltage (V)
Output Voltage (V)
2.500010
2.500000
2.499990
2.499980
2.499970
2.499960
2.499950
2.499940
2.499930
OUTPUT VOLTAGE vs LOAD CURRENT
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)
0
5
10
15
20
25
30
Load Current (mA)
REF3012, 3020, 3025, 3030, 3033, 3040
SBVS032E
5
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